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Model 4000 Treadmill Customer Support Services SERVICE MANUAL © 1998 Life Fitness, a division of Brunswick Corporation. All rights reserved. All rights reserved. Life Fitness, Lifecycle, Lifepulse and Flexdeck are registered trademarks, and Heart Rate Zone Training, Lifespring and RELY ON IT are trademarks of Brunswick Corporation. Polar is a registered trademark of Polar. Any use of these trademarks, without the express written consent of Life Fitness or the corresponding companies is forbidden. M051-00K40-A030 10-98 Life Fitness Model 4000 Treadmill INTRODUCTION HOW TO USE THIS SERVICE MANUAL In the unlikely event that an operating problem may occur with your Life Fitness model 4000 treadmill, this Service Manual will instruct and guide you on the quickest, most efficient manner in which to approach the situation. This Service Manual has been separated into a total of Four Sections for quick reference: o INTRODUCTION o TABLE OF CONTENTS Section I o THEORY OF OPERATION o TROUBLESHOOTING GUIDES Section II o DIAGNOSTIC TESTS Section III o MODEL 4000 "How To..." GUIDES Section IV o WIRING DIAGRAMS o PARTS IDENTIFICATION o COMMUNICATING BY FAX If an operating problem should arise, turn to the TROUBLESHOOTING GUIDES and attempt to isolate what is causing the malfunction. The GUIDES are listed by symptoms and follow with suggestions as to the most probable cause of the problem. Once you have pinpointed the source of the problem, turn to the appropriate "How To..." section and review the proper procedures for removing, replacing or adjusting a part. The "How To..." sections are organized by replaceable part (or assembly) name and each page lists the “Tools Required“ to complete that specific function. Refer to Section IV to identify the proper name and number of the part you will now need to order to repair your machine. A form to order by FAX has also been included in Section IV for your convenience. To order a part, call Life Fitness Customer Support Services any Monday through Friday from 8:00 AM to 6:00 PM ( C.S.T.). When you place a call, in order to speed our response to your particular situation, please have the following information available for the customer service phone technician who will be prepared to assist you: 1. The Treadmill model type (4000) 2. The serial number ( Located on the front crossbar between the two wheels) Serial Number: 3. The symptom of the problem you are experiencing 4. The part name and number you need to order When you receive your order, review the appropriate "How To..." section and follow the step by step procedures designed to help you install the part quickly and correctly. If you have any questions or comments please phone, mail, or fax us at one of the numbers listed below. T M CUSTOMER SUPPORT SERVICES 10601 Belmont Avenue, Franklin Park, IL 60131 Phone ( 800 ) 351-3737 Toll Free or (847) 451-0036 FAX (800) 216-8893 Toll Free or (847) 288-3702 FCC Warning - Possible Radio/Television Interference NOTE: This equipment has been tested and found to comply with the limits pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that the interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, you are encouraged to try to correct the interference by one or more of the following measures: • • • • Reorient or relocate the receiving antenna. Increase the space between the equipment and the receiver. Connect the equipment to an outlet on a different circuit than that to which the receiver is connected. Consult an exercise equipment dealer or an experienced radio/TV technician for help. You are cautioned that any changes or modifications to this equipment could void your product warranty. Life Fitness Model 4000 Treadmill TABLE OF CONTENTS INTRODUCTION (How to use this Service Manual) TABLE OF CONTENTS SECTION I PAGE THEORY OF OPERATION 1 TROUBLESHOOTING GUIDES NO POWER..................................................................................................................... 2 NOISY TREADMILL......................................................................................................... 3 STRIDING BELT.............................................................................................................. 4 UNIT RESETS RANDOMLY ............................................................................................ 5 DISPLAY DOES NOT ILLUMINATE OR RESPOND TO INPUT....................................... 6 UNIT WILL NOT ELEVATE.............................................................................................. 7 ERROR DISPLAY MESSAGES ....................................................................................... 8 HEART RATE DOES NOT RESPOND ............................................................................ 9 ( If Equipped with Optional Heart Rate Kit Tray ) SECTION II DIAGNOSTIC TESTS................................................................................................................... 1-4 SECTION III How To...REMOVE AND REPLACE THE VENT COVER.................................................................................................................. 1 MOTOR COVER.............................................................................................................. 2 DISPLAY CONSOLE ....................................................................................................... 3 HANDLEBAR AND HANDRAILS...................................................................................... 4 DECK AND STRIDING BELT........................................................................................... 5 How To...ADJUST AND TENSION THE STRIDING BELT .......................................................... 6-8 FRONT ROLLER ASSEMBLY ......................................................................................... 9 REAR ROLLER ASSEMBLY............................................................................................ 10 HEATSINK CONTROL BOARD ASSEMBLY ................................................................... 11,12 DISPLAY WIRE HARNESS ............................................................................................. 13 LIFT ACTUATOR ASSEMBLY ......................................................................................... 14 DRIVE MOTOR BELT...................................................................................................... 15,16 DRIVE MOTOR ASSEMBLY............................................................................................ 17,18 LIFESPRINGS ................................................................................................................. 19 TRAY ( Optional Heart Rate Kit )...................................................................................... 20 SECTION IV WIRING DIAGRAM ...................................................................................................................... 1 PARTS IDENTIFICATION ............................................................................................................ 2-4 COMMUNICATING BY FAX ......................................................................................................... 5,6 Life Fitness Model 4000 Treadmill THEORY OF OPERATION The operational functions of the Life Fitness Model 4000 Treadmill are accomplished by four main components: the Control Board, the Display Console, the Drive Motor and the Lift Actuator. The Treadmill user and the control board provide input to the display console. The display console then determines the appropriate action to be taken and passes low level signals to the control board. The control board converts low level signals to high level signals and forwards them to the drive motor and the lift actuator to execute the requested command. All of the “Intelligence” within the Treadmill is located in the display console. Control Board The control board provides power for the Treadmill, acts as an interface between the display console, drive motor and lift actuator, and also acts as an additional interface between the speed sensing and lift limit switches. The drive motor trigger, lift actuator time and direction, and safety power relay signals are received from the display console and routed through the control board to execute a command. Speed sensing and lift limit signals are also passed through the control board to the display console. Display Console The display console is the user interface that allows selection from the various programs and options offered by the Treadmill. The display console provides all of the “Intelligence” within the Treadmill, controls the information displays, and monitors the keypad and safety switches. It determines the drive motor and lift actuator actions to suit the chosen Life Fitness aerobic training program and it also accommodates the optional heart rate receiver. Drive Motor The drive motor is the component responsible for moving the striding belt. The speed sensor, located on the drive motor, sends pulses through the control board to the display console which converts them to the striding belt speed. The display console adjusts the power to the drive motor to maintain a constant speed to the striding belt resulting in a more comfortable “feel”. Lift Actuator The lift actuator is the component responsible for raising and lowering the incline level of the Treadmill. The display console, through the control board, will raise and lower the lift actuator for the appropriate amount of time and incline required by a specific command. The “Home” lift limit switch signals the display console when the lift actuator is at 0% incline. The lift actuator also has its own internal built-in limit switches. 1 Life Fitness Model 4000 Treadmill TROUBLESHOOTING GUIDE Symptom: NO POWER Malfunction No Power Probable Cause Corrective Action On/off switch Turn unit On. Insufficient power source Plug treadmill into power source with proper electrical requirements. (See Operation Manual) Line cord improperly seated in electrical outlet Inspect power connection at outlet. Damaged line cord Replace line cord. Faulty Display Console See “Display Console “ symptom. For Assistance: Call Life Fitness Customer Support Services 1-847-451-0036 or 1-800-351-3737 2 Life Fitness Model 4000 Treadmill TROUBLESHOOTING GUIDE Symptom: NOISY TREADMILL Malfunction Probable Cause Corrective Action Rubbing sound from beneath machine Foreign objects may be stuck under the machine Inspect underneath Belt and Machine. Remove any debris or accumulation. Rubbing sound from Striding Belt Striding Belt not tracking properly Adjust Striding Belt tracking. See “How To...Adjust and Tension the Striding Belt” Striding Belt is rubbing on extrusion or roller pulley Center Striding Belt. See “How To...Adjust and Tension the Striding Belt” Striding Belt is rubbing on belt guide Center Striding Belt. See “How To...Adjust and Tension the Striding Belt” Insufficient break-in period A new Deck and Striding Belt will require a break-in period of approx. 20 hours. Wax accumulation on rear roller Run machine at 4 to 5 MPH to distribute wax onto Striding Belt. Lifesprings may be out of alignment Reposition the Lifesprings. Drive Motor Belt may be worn or damaged Replace Drive Motor Belt. Drive Motor Pulley shifted Check Drive Motor Pulley to insure Pulley is aligned with Front Roller Pulley. Tighten the Set Screws to secure the Pulley into place. Drive Motor Belt overtensioned Slacken Drive Belt tension (See “How To...Remove and Replace the Drive Motor Belt”) Weak Drive Motor/Drive Motor Software Check Drive Motor Flywheel and Software for compatibility (See Diagnostic Software Version. Faulty Drive Motor Replace Drive Motor Faulty Lift Actuator Perform “Lift Test”. (See Diagnostics). Replace faulty Lift Actuator. Popping sound Squeaking noise “Groaning” sound heard from front of machine Loud “Groaning” sound heard from front of machine while elevating For Assistance: Call Life Fitness Customer Support Services 1-847-451-0036 or 1-800-351-3737 3 Life Fitness Model 4000 Treadmill TROUBLESHOOTING GUIDE Symptom: STRIDING BELT Malfunction Probable Cause Corrective Action Insufficient power source Plug treadmill into power source with proper electrical requirements. (See Operation Manual) Faulty Control Board Replace Control Board Striding Belt hesitates upon start up (or will not begin to turn on new machine) High amount of friction between Deck and Striding Belt. Start unit with no one on it at 3.5 mph and 5% or greater incline. Step on to the Belt while it is moving and walk for 4 to 5 minutes. Maximum speed reduced Striding Belt, Deck Malfunction • Deck laminate is worn through • Belt worn Replace Striding Belt and Deck Line Voltage too low Plug the Treadmill into a power source with the proper electrical requirements. Striding Belt slips Adjust Striding Belt Tension (See “How To...”) Drive Motor Belt slipping See “How To...Remove and Replace the Drive Motor Belt” for proper Drive Motor Belt tensioning instructions. Unit is not level Adjust rear leveling legs (See Operation Manual) Striding Belt needs to be retensioned Adjust Striding Belt Tension (See “How To...”) Missing rubber spacer Replace rubber spacer between Frame and End Cap End Cap(s) distorted Replace End Cap(s) Striding Belt stretched or too long Replace Deck and Striding Belt Striding Belt will not move Striding belt comes in contact with End Caps For Assistance: Call Life Fitness Customer Support Services 1-847-451-0036 or 1-800-351-3737 4 Life Fitness Model 4000 Treadmill TROUBLESHOOTING GUIDE Symptom: UNIT RESETS RANDOMLY Malfunction Unit Resets Randomly Probable Cause Corrective Action Insufficient Power Source Plug Treadmill into power source with proper electrical requirements. (See Operational Manual) Damaged Line Cord Replace Line Cord. Line Cord improperly seated in electrical outlet Secure connection at electrical outlet. Low AC line voltage Too many items tied into AC line. Use a different circuit line outlet. Loose connections Check and secure all connectors For Assistance: Call Life Fitness Customer Support Services 1-847-451-0036 or 1-800-351-3737 5 Life Fitness Model 4000 Treadmill TROUBLESHOOTING GUIDE Symptom: DISPLAY DOES NOT ILLUMINATE OR RESPOND TO INPUT Malfunction Display will not illuminate when machine is turned on. Probable Cause Corrective Action Insufficient power source. Plug Treadmill into power source with proper electrical requirements. (See Operation Manual) Loose connection at Display Console or Control Board. Secure connections at Display Console and Control Board. Faulty Control Board. With a volt meter check cable voltage at P1 (Console cable) for 8v DC. (pin #2 positive ) (pin #8 negative). Faulty Display Console. Replace Display Console. For Assistance: Call Life Fitness Customer Support Services 1-847-451-0036 or 1-800-351-3737 6 Life Fitness Model 4000 Treadmill TROUBLESHOOTING GUIDE Symptom: UNIT WILL NOT ELEVATE Malfunction Unit will not elevate Unit jammed at top of elevation Probable Cause Corrective Action Line Cord is crossed over lifting assembly Check position of Line Cord placement. Faulty Lift Actuator (limits) Perform Lift Test (See Diagnostics). Defective Lift Actuator Replace Lift Actuator Faulty Control Board Replace Control Board Faulty Home Switch Perform Lift Home Switch Test Defective Home Switch Replace Home Switch Faulty Control Board Replace Control Board For Assistance: Call Life Fitness Customer Support Services 1-847-451-0036 or 1-800-351-3737 7 Life Fitness Model 4000 Treadmill TROUBLESHOOTING GUIDE Symptom: ERROR DISPLAY MESSAGES Malfunction Probable Cause Corrective Action ERROR MESSAGES: START UP (Occurs when the Striding Belt, upon start up, will speed up at a high rate) RUNNING (Occurs at sudden change in Striding Belt Speed) BELT MOVING (Occurs at interruption in power or when machine is just plugged in) OVER SPEED (Striding Belt moving faster than commanded) Bad connection to Opto Speed Sensor Check all electrical connections. Misaligned or damaged Opto Speed Sensor Adjust or replace Opto Speed Sensor. Moving Striding Belt was suddenly stopped Reset machine by turning power OFF and ON at ON/OFF switch. Bad connection to Opto Speed Sensor Check all electrical connections. Misaligned or damaged Opto Speed Sensor Adjust or replace Opto Speed Sensor. Spike or interruption in power Reset machine by turning power OFF and ON at ON/OFF switch. Bad connection or damaged Line Cord Check all electrical connections or replace Line Cord. Faulty ON/OFF switch Replace switch. Damaged Control Board Replace Control Board. Faulty Control Board Replace Control Board For Assistance: Call Life Fitness Customer Support Services 1-847-451-0036 or 1-800-351-3737 8 Life Fitness Model 4000 Treadmill TROUBLESHOOTING GUIDE Symptom: OPTIONAL HEARTRATE KIT DOES NOT RESPOND Malfunction Heart Rate system does not respond Probable Cause Corrective Action Heart Rate cable not connected Check all electrical connections. Loose connection at Receiver Secure connection at Receiver Loose connection at Console Secure connection at Console and Handlebar. User error Check Heart Rate kit operating instructions User may have an unusual heart beat Have different people try Transmitter (chest) strap. Faulty Transmitter and/or Receiver (Heart Rate kit) Replace Transmitter and/or Receiver (Heart Rate kit). Faulty Display Console Replace Display Console. Outside noise (Cross talk) Move unit to another location. For Assistance: Call Life Fitness Customer Support Services 1-847-451-0036 or 1-800-351-3737 9 Life Fitness Model 4000 Treadmill NOTES: 10 Life Fitness Model 4000 Treadmill DIAGNOSTIC TESTS PURPOSE: This Section describes the test procedures for the Life Fitness 4000 Treadmill Display Console Board including the Heart Rate feature (operational only if equipped with the optional Heart Rate Kit Tray). SCOPE: Diagnostic procedures will test the Display Console Board as used in the final Treadmill assembly. These procedures will insure proper functioning of the Console LED’s, Keys and Displays as well as identify the Console version. PROCEDURE: Begin with the Treadmill turned OFF. Hold the designated key during power up to enter into the chosen Diagnostic Menu. Continued 1 Life Fitness Model 4000 Treadmill DIAGNOSTIC TESTS (Continued ) The SPEED τ key is used for the following testing information: ⇒ CHECK THE DISPLAY/KEYPAD FUNCTIONS ⇒ REVIEW STATISTICS ⇒ IDENTIFY SOFTWARE VERSION Use the ENTER key to advance through the test. Power up the unit while holding the SPEED τ key. All LED’s on the display console will light. Press ENTER once and the console will begin to scroll through lighting LED’s individually. Press ENTER a second time and this will bring you to the keypad test. By pressing each of the six keys, a pattern of LED’s will light. This verifies that each of the keys is responding as intended. Press ENTER a third time and the word “STATS” will appear in the display readout. Pressing the SPEED τ key will scroll you through the individual statistics. (To scroll back through the statistics, press the SPEED σ key). 1st press 2nd press 3rd press 4th press 5th press DISTANCE LED lit: miles ( in hundreds) TIME LED lit: motor on time (in seconds) INCLINE LED lit: lift motor run time (1/8 of a second) CAL/HR LED lit: percentage of elevation and time (percentage of elevation usage) SPEED LED lit: current limiter activation Press ENTER a fourth time and this will give you the software version of the treadmill. For example, the display reads 4.3EE1 translates to: 4.3 E E 1 SOFTWARE VERSION ENGLISH MEASUREMENT (MILES) ENGLISH LANGUAGE 120V Press ENTER a fifth time and “UNITS” appears in the display readout. Pressing the SPEED σ key will change the unit of measure from english to metric. Press ENTER a sixth time and “LANG” appears in the display readout. Pressing the SPEED σ key enables you to change from english to a foreign language. You can go back to the start at any time in this test mode by pressing the CLEAR/PAUSE key. Continued 2 Life Fitness Model 4000 Treadmill DIAGNOSTIC TESTS (Continued) The INCLINE τ key is used for the following testing information: ⇒ ⇒ ⇒ ⇒ ELEVATION TEST/ HOME SWITCH SPEED MODE OPERATION HEARTRATE MODE OPERATION (if equipped with optional heart rate kit) BLANKING ON/OFF Power up the unit while holding down the INCLINE τ key. The display console will read TEST MODE. Upon initial entry into the test mode, the two columns of the program profile window will have one to two LED’s lit. The first three LED’s (from the top) of the left column are related to jumpers which are not applicable to any of the test modes. The fourth LED from the top indicates the condition of the OPTO SPEED SENSOR. When lit, the OPTO SPEED SENSOR is reading through a slot in the chopper wheel that is mounted on the motor. When the LED is off, the OPTO SPEED SENSOR is being blocked by a slot on the chopper wheel. Normal function of the LED is that it flashes on and off as the drive motor turns during operation. The fifth LED from the top will inform you if the unit is a 120v or a 220v unit. When the LED is off, the unit is 110v. When the LED is on, the unit is 220v. The sixth LED from the top indicates the elevation (HOME SWITCH). When the LED is off, the HOME SWITCH is engaged and the unit is at zero elevation. When the LED is lit, the HOME SWITCH is disengaged and the unit is at a non-zero elevation. The left, bottom LED is the EMERGENCY STOP SWITCH condition. When this LED is lit, the EMERGENCY STOP SWITCH is engaged and the unit operates. When the LED is off, the EMERGENCY STOP SWITCH is disengaged and the unit will not run. The right, bottom LED informs you if the BLANK STATE is set to the ON or OFF position. Continued 3 Lifestride Model 4000 Treadmill DIAGNOSTIC MODE ENTRY (Continued) TO TEST THE ELEVATION: Press the INCLINE σ key to elevate the treadmill. Press the INCLINE τ key to lower the unit. A beeping will occur while the unit is being lowered and the home switch is activated. To completely lower the elevation, set the incline to 0%. The unit will continue to lower its elevation until the home switch or internal limit switch is engaged. SPEED MODE Press any speed key to enter the speed mode. The display will present two numbers. The left side number represents the actual speed. The right side number represents the relative power applied to the motor. The unit will supply a fixed amount of power to the drive motor in the speed mode. HEART RATE MODE (if equipped with optional heart rate kit) The user must have the heart rate transmitter and receiver attached in their proper positions for the heart rate to display. By pressing ENTER, the users heart rate will appear on the display’s readout. INCLINE σ KEY Power up the unit while holding down the INCLINE σ key. NOTE: Do not stand on the striding belt during power up. The striding belt will begin to move at .5 mph. Grasp the handlebar and begin walking on the striding belt. Walk forward taking the smallest steps possible. This test will indicate the power draw on the treadmill. The average amount is 8 to 12 and will vary according to the technician’s weight. Excessively high numbers indicate a newer, non-broken in striding belt or a very old, worn belt. BLANKING MODE The display console is factory set to stay lit when the treadmill is not in use. To turn the display console ON or OFF, power up the unit while holding down the CLEAR key. Repeating this action will act as a toggle between ON and OFF. When the BLANKING is in the OFF mode, the display will read “DISPLAY OFF” and the display will automatically act as a screen saver and shut off after 4 minutes of non-use. 4 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE VENT COVER Tools Required: Phillips Screwdriver Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Monocolumn Motor Cover Vent Cover Screws Step 2 Use a phillips screwdriver to remove the two SCREWS securing the sides of the VENT COVER to the MOTOR COVER. Step 3 Grasp the VENT COVER in the center and pull away from the MOTOR COVER to disengage the two snap down CLIPS located on the inside, center of the VENT COVER. Step 4 Position the new VENT COVER into place and reverse steps 1 through 3 to return all parts to their proper locations. 1 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE MOTOR COVER Tools Required: Phillips Screwdriver, hex key wrench set Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the VENT COVER (See “How To...”). Step 3 Use a phillips screwdriver to remove the SCREW securing the RETAINING PLATE and FIBERBOARD WEDGE in place on the MONOCOLUMN. Step 4 Remove the four SCREWS securing the MOTOR COVER in place against the Treadmill FRAME. Lift the MOTOR COVER from the machine. Step 5 Place the new MOTOR COVER in position and reverse Steps 1 through 4 to return all parts to their proper locations. 2 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE DISPLAY CONSOLE Tools Required: Phillips Screwdriver Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the TRAY, if equipped with the optional HEART RATE kit. (See “How To...”). Step 3 Use a phillips screwdriver to remove the two SCREWS securing the extended neck of the DISPLAY CONSOLE to the front and back of the MONOCOLUMN. Step 4 Carefully lift the worn DISPLAY CONSOLE up from the MONOCOLUMN and unplug the 12-PIN CONNECTOR of the WIRE HARNESS from the back of the DISPLAY CONSOLE. Step 5 Plug the 12-PIN CONNECTOR of the WIRE HARNESS protruding from the top of the MONOCOLUMN into the corresponding PC BOARD CONNECTOR located on the back of the new DISPLAY CONSOLE. Once connected, feed the excess CABLE of the WIRE HARNESS back into the top of the MONOCOLUMN and lower the DISPLAY CONSOLE into position on the MONOCOLUMN. Secure the extended neck of the DISPLAY CONSOLE to the front and back of the MONOCOLUMN with the two SCREWS. Step 6 Plug the unit into an electrical outlet and turn the power ON at the ON/OFF switch to resume operation. 3 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE HANDLEBAR AND HANDRAILS Tools Required: Phillips Screwdriver, hex key wrench set Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the DISPLAY CONSOLE. (See “How To...”). Step 3 Remove the two HEX KEY SCREWS securing the center of the foam padded HANDLEBAR to the top of the MONOCOLUMN. Step 4 Loosen and remove the 2” (top) and the 2-1/2” (bottom) SCREWS securing the base of each of the two VERTICAL POSTS to the FOOT BRACKETS located on either side of the treadmill. Step 5 Lift the entire HANDLEBAR/HANDRAIL ASSEMBLY away from the machine and set it down on the floor. Remove the SCREW securing each of the two VERTICAL POSTS to the foam padded HANDLEBARS and slide the POSTS from the HANDLEBARS. Step 6 Replace the VERTICAL POST(S) or HANDLEBAR as desired and reverse Steps 1 through 5 to return all parts to their proper positions. 4 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE DECK AND STRIDING BELT Tools Required: Phillips Screwdriver, socket set, hex key wrench set IMPORTANT: THE DECK AND STRIDING BELT SHOULD ALWAYS BE REPLACED IN TANDEM. DO NOT REPLACE ONE WITHOUT THE OTHER. Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the MOTOR COVER. (See “How To...”). Step 3 Use a phillips screwdriver to remove the three SCREWS securing each of the END CAPS to the Treadmill FRAME. Remove the END CAPS and set aside. Step 4 Remove the REAR ROLLER from the machine. (See “How To...”). Step 5 Remove the FRONT ROLLER ASSEMBLY. (See “How To...”). Step 6 Use a hex key wrench to loosen and remove the four SCREWS securing the top of the DECK to the FRAME ASSEMBLY. Step 7 Remove the worn DECK and STRIDING BELT from the FRAME ASSEMBLY. Step 8 Position a new DECK and STRIDING BELT in place and reverse Steps 1 through 6 to return all parts to their proper locations. Refer to “How to...ADJUST AND TENSION THE STRIDING BELT” for proper BELT tensioning instructions NOTE: DO NOT OVERTIGHTEN THE TENSIONING BOLTS TO AVOID DAMAGE TO THE STRIDING BELT AND THE ROLLER BEARINGS. 5 Life Fitness Model 4000 Treadmill How To ... ADJUST AND TENSION THE STRIDING BELT Tools Required: Hex key wrench set, phillips screwdriver A. REPLACING THE STRIDING BELT WITH A NEW STRIDING BELT CAUTION: WHENEVER REMOVING OR REINSTALLING AN EXISTING STRIDING BELT, DO NOT REMOVE OR LOOSEN THE FRONT ROLLER. Step 1 After installing the new STRIDING BELT, but prior to tensioning, place two pieces of tape exactly 38.5 inches (97.79 cm) apart on both the right and left edges of the STRIDING BELT. Tape (4 Places) 38.5 Inches Step 2 Alternately tighten the two TENSIONING BOLTS 1/4 turn clockwise each until the distance between the tapes is 38.75 inches (98.425 cm) which is the equivalent of .65% stretch. Step 3 Adjust TRACKING. 6 Life Fitness Model 4000 Treadmill How To... ADJUST AND TENSION THE STRIDING BELT (Continued) Tools Required: Hex key wrench set, phillips screwdriver CAUTION: DO NOT MOVE OR PLACE YOUR HANDS UNDER THE UNIT WHILE THE MACHINE IS PLUGGED INTO AN ELECTRICAL OUTLET. It is EXTREMELY important that the treadmill be correctly leveled prior to any tracking adjustments. An unstable unit may cause Striding Belt misalignment. Tracking (Centering) an Existing or New Striding Belt Step 1 Locate the two belt TENSIONING BOLTS on each side of the REAR ROLLER MOUNTING BRACKETS. The TENSIONING BOLTS are accessible from the holes provided in the ENDCAPS. Step 2 Enter the Manual program and set the belt speed to run at 4.0 mph. NOTE: EACH ADJUSTMENT MADE TO ONE SIDE OF THE REAR ROLLER MUST BE MET WITH AN EQUAL AND OPPOSITE ADJUSTMENT TO THE OTHER SIDE OF THE REAR ROLLER TO MAINTAIN AN IDEAL BELT TENSION AT THE PIVOT POINT. CAUTION: DO NOT OVER TIGHTEN THE TENSIONING BOLTS WHILE MAKING BELT ADJUSTMENTS. OVER TIGHTENING OF BOLTS MAY OVER STRETCH AND DAMAGE THE STRIDING BELT AS WELL AS PLACE AN UNNECESSARY LOAD ON THE REAR ROLLER BEARINGS. If the STRIDING BELT has moved to the right, turn the right TENSION BOLT 1/4 turn clock-wise and the left TENSION BOLT 1/4 turn counterclockwise to start the STRIDING BELT tracking back to the center of the REAR ROLLER. If the STRIDING BELT has moved to the left, turn the left TENSION BOLT 1/4 turn clock-wise and the right TENSION BOLT 1/4 turn counter-clockwise to start the STRIDING BELT tracking back to the center of the REAR ROLLER. Continued Life Fitness Model 4000 Treadmill 7 How To... ADJUST AND TENSION THE STRIDING BELT (Continued) Tools Required: Hex key wrench set, phillips screwdriver Step 3 Repeat adjustments until the STRIDING BELT appears centered. Allow the machine to continue running for several minutes to observe if the tracking remains stabilized. CAUTION: DO NOT MOVE OR PLACE YOUR HANDS UNDER THE UNIT WHILE THE MACHINE IS PLUGGED INTO AN ELECTRICAL OUTLET. It is EXTREMELY important that the treadmill be correctly leveled prior to any tracking adjustments. An unstable unit may cause Striding Belt misalignment. Tensioning an Existing Striding Belt Step 1 Locate the two BELT TENSIONING BOLTS on each side of the REAR ROLLER MOUNTING BRACKETS. The TENSIONING BOLTS are accessible from the holes provided in the ENDCAPS. Step 2 Enter the Manual program and run unit for five minutes at 5.0 mph.DO NOT run on the BELT. Step 3 Using the speed decrease button ∇, bring the STRIDING BELT speed down to 2 mph. With the STRIDING BELT speed at 2 mph., tightly grasp the HANDRAILS and attempt to stall the STRIDING BELT. If the STRIDING BELT slips, continue to Step 4. if it does not slip, the tension is correct. Step 4 Stop the treadmill and alternately turn the STRIDING BELT TENSIONING BOLTS 1/4 turn clock-wise to tension, NOT exceeding one full turn. (See Tracking (Centering) an Existing or New Striding Belt on previous page. Repeat Step 3.) 8 Life Fitness Model 4000 Treadmill How To... REMOVE AND REPLACE THE FRONT ROLLER ASSEMBLY Tools Required: Phillips screwdriver, socket set, hex key wrench set Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the MOTOR COVER. (See “How To...”). Step 3 It will now be necessary to relieve the tension on the STRIDING BELT by accessing the TENSIONING BOLTS from the rear ENDCAPS. IMPORTANT: EACH ADJUSTMENT MADE TO ONE SIDE OF THE REAR ROLLER MUST BE MET WITH AN EQUAL ADJUSTMENT TO THE OTHER SIDE OF THE ROLLER TO MAINTAIN AN IDEAL BELT TENSION AT THE PIVOT POINT. HELPFUL HINT: MARK THE POSITION OF THE REAR ROLLER ON THE INSIDE OF THE MOUNTING BRACKET TO LOCATE ITS ORIGINAL PLACEMENT. THIS WILL HELP WHEN RE-TENSIONING THE STRIDING BELT. Use a hex key wrench to alternately turn the STRIDING BELT TENSIONING BOLTS 1/4 turn each, counterclockwise until the STRIDING BELT is slackened enough to allow for removal of the FRONT ROLLER in the next Step. Step 4 Slide the DRIVE MOTOR PULLEY BELT from the FRONT ROLLER ASSEMBLY PULLEY. Lift the worn FRONT ROLLER ASSEMBLY from the EXTRUSION BRACKETS and from within the STRIDING BELT to remove it from the unit. Step 5 Locate the new FRONT ROLLER ASSEMBLY into position and reverse Steps 1 through 5 to return all parts to their proper locations. Step 6 Refer to “How To...ADJUST AND TENSION THE STRIDING BELT” for proper BELT tensioning instructions. 9 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE REAR ROLLER Tools Required Socket and ratchet set, hex key wrench set Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the MOTOR COVER. See “How To...” Step 3 Use a phillips screwdriver to remove the three SCREWS securing each of the END CAPS to the FRAME and set the END CAPS aside. Step 4 Use a hex key wrench to loosen and remove the TENSIONING SCREW and WASHER securing each side of the REAR ROLLER to the REAR ROLLER MOUNTING BRACKETS. HELPFUL HINT: MARK THE POSITION OF THE REAR ROLLER ON THE INSIDE OF THE MOUNTING BRACKET TO LOCATE ITS ORIGINAL PLACEMENT. THIS WILL HELP WHEN RETENSIONING THE STRIDING BELT. Step 5 Remove the worn REAR ROLLER from the machine. Step 6 Position the new REAR ROLLER against the MOUNTING BRACKETS and use a hex key wrench to install the TENSIONING SCREWS and WASHERS by alternately turning the SCREWS clockwise an equal number of turns until the STRIDING BELT is snug, but not overstretched, against the REAR ROLLER. IMPORTANT: EACH ADJUSTMENT MADE TO ONE SIDE OF THE REAR ROLLER SHOULD BE MET WITH AN EQUAL ADJUSTMENT TO THE OTHER SIDE OF THE ROLLER TO MAINTAIN AN IDEAL BELT TENSION AT THE CENTER PIVOT POINT OF THE ROLLER. Step 7 Reverse Steps 1 through 3 to return all parts to their proper positions and refer to “How To...ADJUST AND TENSION THE STRIDING BELT” for proper BELT tensioning instructions. 10 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE HEATSINK CONTROL BOARD ASSEMBLY Tools Required: Phillips Screwdriver, socket and ratchet set, hex key wrench set WARNING: FAILURE TO OBSERVE SAFE PROCEDURES WHEN SERVICING THIS UNIT COULD RESULT IN INJURY FROM ELECTRICAL SHOCK Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the VENT COVER. (See “How To...”). Step 3 Remove the MOTOR COVER. (See “How To...”). Step 4 Ground yourself to the machine by positioning an ANTI-STATIC GROUNDING STRAP around your wrist and attaching the other end (alligator clip) to a MOUNTING SCREW, or a connecting GROUND WIRE SCREW. Step 5 Unplug the six CONNECTORS shown in the illustration from the HEATSINK CONTROL BOARD ASSEMBLY. NOTE: TAKE A MOMENT TO NOTE THE LOCATIONS OF THE CONNECTORS PRIOR TO UNPLUGGING THEM FROM THE CONTROL BOARD. Continued Life Fitness Model 4000 Treadmill 11 How To ... REMOVE AND REPLACE THE HEATSINK CONTROL BOARD ASSEMBLY ( Continued ) Step 6 Use a socket wrench to loosen and remove the two SCREWS securing the GROUNDING WIRES to the HEATSINK CONTROL BOARD ASSEMBLY. Step 7 Lift off the PROTECTIVE COVER from the top of the CAPACITOR. Remove the POSITIVE and NEGATIVE WIRE CONNECTORS leading from the DRIVE MOTOR ASSEMBLY to the CAPACITOR. NOTE: THE CAPACITOR IS POLARIZED ( + RED, - BLACK ). Step 8 Remove the two MOUNTING SCREWS securing the HEATSINK CONTROL BOARD ASSEMBLY to the MOTOR PAN. Step 9 Carefully lift the malfunctioning HEATSINK CONTROL BOARD ASSEMBLY from aside. the machine and set Step 10 Place the new HEATSINK CONTROL BOARD ASSEMBLY into position and reverse Steps 1 through 8 to return all parts to their proper locations. 12 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE DISPLAY WIRE HARNESS Tools Required: Phillips Screwdriver, socket and ratchet set, hex key wrench set WARNING: FAILURE TO OBSERVE SAFE PROCEDURES WHEN SERVICING THIS UNIT COULD RESULT IN INJURY FROM ELECTRICAL SHOCK Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the VENT COVER. (See “How To...”). Step 3 Remove the MOTOR COVER. (See “How To...”). Step 4 Remove the TRAY if equipped with the optional HEART RATE KIT. (See “How To...”). Step 5 Remove the Display Console. (See “How To...”). Step 6 Ground yourself to the machine by positioning an ANTI-STATIC GROUNDING STRAP around your wrist and attaching the other end (alligator clip) to a MOUNTING SCREW, or a connecting GROUND WIRE SCREW. Step 7 Tuck the 12-PIN CONNECTOR, which was disconnected from the DISPLAY CONSOLE, into the top of the MONOCOLUMN. Withdraw the DISPLAY WIRE HARNESS from the MONOCOLUMN through the large hole at the base of the MONOCOLUMN. Step 8 Unplug the 12-PIN CONNECTOR from the HEATSINK CONTROLLER BOARD ASSEMBLY. Step 9 Feed the new DISPLAY WIRE HARNESS through the MONOCOLUMN from the large hole at the base of the MONOCOLUMN until it exits toward the user side of the HANDLEBAR ASSEMBLY which crosses the top of the MONOCOLUMN.. NOTE: THE 12-PIN CONNECTOR OF THE DISPLAY WIRE HARNESS SHOULD EXIT THE TOP OF THE MONOCOLUMN ON THE USER SIDE OF THE HANDLEBAR CONNECTING BRACKET TO AVOID ANY WIRES BEING PINCHED OR DAMAGED BY THE DISPLAY CONSOLE UPON ASSEMBLY. Step 10 Reverse Steps 1 through 8 to return all parts to their proper positions. Replace any WIRE TIES which may have been cut to insure the WIRE HARNESS is secure and will not be damaged by moving parts. Life Fitness Model 4000 Treadmill 13 How To ... REMOVE AND REPLACE THE LIFT ACTUATOR ASSEMBLY Tools Required: Phillips screwdriver, standard screwdriver, hex key wrench set WARNING: FAILURE TO OBSERVE SAFE PROCEDURES WHEN SERVICING THIS UNIT COULD RESULT IN INJURY FROM ELECTRICAL SHOCK Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the VENT COVER. (See “How To...”). Step 3 Remove the MOTOR COVER. (See “How To...”). Step 4 Ground yourself to the machine by positioning an ANTI-STATIC GROUNDING STRAP around your wrist and attaching the other end (alligator clip) to a MOUNTING SCREW, or a connecting GROUND WIRE SCREW. LIFT ACTUATOR ES INCH 5 2 . m 6 75 c 15.8 LIFT MOTOR NUT HAIR PIN CLIP PUSH BOLT LIFT FRAME ASSEMBLY HAIR PIN CLIP CLEVIS PIN Step 5 Unplug the LIFT ACTUATOR (P4), from the HEATSINK CONTROLLER BOARD ASSEMBLY. Step 6 Disconnect the large LIFT MOTOR NUT from the pins holding it to the LIFT FRAME ASSEMBLY by removing the two HAIR PIN CLIPS and PUSH BOLTS. Step 7 Remove the HAIR PIN CLIP and CLEVIS PIN securing the unthreaded end of the LIFT ACTUATOR to the FRAME. Step 8 Carefully lift the malfunctioning LIFT ACTUATOR and remove it from the machine. Step 9 Check the new LIFT ACTUATOR distance from the top of the threaded post to the center of the hole in the LIFT MOTOR NUT. The distance should be preset at 6.25 inches (15.875 cm). Position the new LIFT ACTUATOR ASSEMBLY in place and reverse Steps 1 through 7 to return all parts to their proper locations. NOTE: BE CAREFUL TO ROUTE WIRES OF THE LIFT ACTUATOR IN A MANNER WHICH WILL AVOID PINCHING OR DAMAGE TO WIRES BY MOVING PARTS. USE WIRE TIES TO INSURE WIRES STAY SECURE. 14 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE DRIVE MOTOR BELT Tools Required: Phillips screwdriver, socket and ratchet set, hex key wrench set Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the VENT COVER. (See “How To...”). Step 3 Remove the MOTOR COVER. (See “How To...”). Step 4 It will now be necessary to relieve the tension of the STRIDING BELT to allow removal of the DRIVE MOTOR BELT from the FRONT ROLLER. HELPFUL HINT: REMOVE THE END CAPS AND MARK THE POSITION OF THE REAR ROLLER ON THE INSIDE OF THE MOUNTING BRACKET TO LOCATE ITS ORIGINAL PLACEMENT. THIS WILL HELP WHEN RE-TENSIONING THE STRIDING BELT. Using a hex key wrench, ALTERNATELY loosen the two TENSIONING SCREWS and WASHERS securing each side of the REAR ROLLER to the REAR ROLLER MOUNTING BRACKETS an EQUAL number of times counter clockwise until the STRIDING BELT is slackened enough to allow for partial removal of the FRONT ROLLER. IMPORTANT: EACH ADJUSTMENT MADE TO ONE SIDE OF THE REAR ROLLER SHOULD BE MET WITH AN EQUAL ADJUSTMENT TO THE OTHER SIDE OF THE REAR ROLLER TO MAINTAIN AN IDEAL STRIDING BELT TENSION AT THE CENTER PIVOT POINT OF THE REAR ROLLER UPON RE-TENSIONING. Continued Life Fitness Model 4000 Treadmill 15 How To ... REMOVE AND REPLACE THE DRIVE MOTOR BELT ( Continued ) Step 5 Lift the FRONT ROLLER ASSEMBLY from the EXTRUSION BRACKETS and position the FRONT ROLLER within the STRIDING BELT to allow for removal of the DRIVE MOTOR BELT from the DRIVE MOTOR and FRONT ROLLER PULLEYS. Step 6 Position a new DRIVE MOTOR BELT over the DRIVE MOTOR and FRONT ROLLER PULLEYS taking note to properly align the ribs within the grooves of the PULLEYS. Relocate the FRONT ROLLER back into operating position. Step 7 Use a hex key wrench to tighten the TENSIONING SCREWS and WASHERS at the REAR ROLLER by ALTERNATELY turning the SCREWS clockwise an EQUAL number of times each until the STRIDING BELT is snug, but not overstretched, against the REAR ROLLER. Step 8 Check the tension of the DRIVE BELT using a BELT TENSIONING GUAGE. (Belt tension=100 lb+/-5 lb). The DRIVE BELT tension can be adjusted by loosening or tightening the LOCK NUT of the TENSIONING BOLT located next to the LIFT ACTUATOR. Step 9 Reverse Steps 1 through 4 to return all parts to their proper positions and refer to “How To...ADJUST AND TENSION THE STRIDING BELT” for proper BELT tensioning instructions. CHECKING THE DRIVE BELT PULLEY ALIGNMENT: It is a good practice to check the alignment of the DRIVE MOTOR BELT PULLEY and the FRONT ROLLER PULLEY whenever servicing or replacing the DRIVE MOTOR BELT. With the power switch OFF and the machine unplugged from the electrical outlet, lay a straightedge flat against the outside of the FRONT ROLLER PULLEY and the DRIVE MOTOR PULLEY. The flat faces of the two PULLEYS should be in-line (coplanar). If the PULLEYS are not in-line, loosen the two DRIVE MOTOR PULLEY SET SCREWS and adjust the DRIVE MOTOR PULLEY on the MOTOR SHAFT accordingly. Tighten the SET SCREWS to secure the PULLEY into position. 16 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE DRIVE MOTOR Tools Required: Phillips screwdriver, socket and ratchet set, hex key wrench set Step 1 Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet. Step 2 Remove the VENT COVER. (See “How To...”). Step 3 Remove the MOTOR COVER. (See “How To...”). Step 4 Cut the WIRE TIE that secures the three DRIVE MOTOR ASSEMBLY lead wires and the SENSOR CABLE at the MOTOR HOUSING. Note the location of this WIRE TIE for replacement later. Disconnect the three DRIVE MOTOR lead wires from the MOTOR TERMINALS. Note lead wire positions for reference during installation. (Orientation = Black, Green, Red, clockwise when facing FLYWHEEL). Step 5 Detach the SENSOR CABLE from the black retaining clip (attached to the metal heat sink on the CONTROL BOARD ASSEMBLY). Disconnect the SENSOR CABLE CONNECTOR from the CONTROL BOARD. Note the orientation of the SENSOR CABLE CONNECTOR on the CONTROL BOARD for reference during installation. Step 6 It will now be necessary to relieve the DRIVE MOTOR BELT tension by removing the LOCK NUT on the TENSIONING BOLT located next to the LIFT ACTUATOR. NOTE: IF A BELT TENSIONING GUAGE IS NOT AVAILABLE, MARK THE CURRENT SETTING OF THE TENSIONING BOLT BY LOCATING A PIECE OF TAPE ON THE BOLT AGAINST THE BRACKET ON THE OPPOSITE SIDE OF THE LOCK NUT. ALSO, COUNT AND NOTE THE NUMBER OF TURNS REQUIRED TO REMOVE THE LOCK NUT. THIS WILL AID IN PROPERLY TENSIONING THE DRIVE BELT DURING INSTALLATION. Remove the 1/4-20 nylon-insert LOCK NUT from the TENSIONING BOLT. Pivot the MOTOR MOUNTING BRACKET rearward and remove the DRIVE MOTOR BELT from the MOTOR PULLEY. Continued 17 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE DRIVE MOTOR ( Continued ) Step 7 Remove the two DRIVE MOTOR ASSEMBLY mounting SCREWS securing the ASSEMBLY to the MOTOR MOUNTING BRACKET by using a 1/4” hex wrench. Remove the DRIVE MOTOR ASSEMBLY from the unit. Pivoting the MOTOR MOUNTING BRACKET may be required to remove the ASSEMBLY. Step 8 Align the new DRIVE MOTOR ASSEMBLY with the MOTOR MOUNTING BRACKET. Locate the new DRIVE MOTOR ASSEMBLY into position and secure IN PLACE with the two SCREWS. (Support the DRIVE MOTOR ASSEMBLY with one hand beneath it while inserting the SCREWS with the other hand). Install the DRIVE MOTOR BELT onto the DRIVE MOTOR PULLEY. Be sure the DRIVE BELT properly engages all ribs on both the DRIVE MOTOR and the FRONT ROLLER PULLEYS. Step 9 Check that the SHAFT KEY located on the DRIVE MOTOR SHAFT is properly seated within one of the four KEY slots in the PLASTIC FAN and that the PLASTIC FAN rests against the shoulder in the MOTOR SHAFT. Reposition the SHAFT KEY and FAN as required if they are not properly aligned. Step 10 Use a STRAIGHT-EDGE to align the flat sides of the DRIVE MOTOR PULLEY and the FRONT ROLLER PULLEY. The faces of the two PULLEYS should be inline (coplanar). If the PULLEYS are not aligned, loosen the two SET SCREWS on the DRIVE MOTOR PULLEY and adjust as necessary. Once aligned, recheck the SHAFT KEY and PLASTIC FAN positions per Step 9 above and tighten the two DRIVE MOTOR PULLEY SET SCREWS. Step 11 Install the 1/4-20 nylon-insert LOCK NUT onto the TENSIONING BOLT and, if available, use a belt tensioning gauge to tension the DRIVE MOTOR BELT to 100 lb (+/- 5 lb). Step 12 NOTE: IF A GAUGE IS NOT AVAILABLE, RE-INSTALL THE LOCK NUT BY TURNING IT THE SAME NUMBER OF TIMES IT WAS TURNED ON REMOVAL. BE SURE THE TENSIONING BOLT IS POSITIONED PROPERLY IN THE SLOT AT THE FRONT OF THE MOTOR HOUSING DURING TENSIONING. Connect the three DRIVE MOTOR lead wires to the proper DRIVE MOTOR TERMINALS (See Step 4). Attach the new SENSOR CABLE to the black retaining clip. Connect the SENSOR CABLE CONNECTOR to the CONTROL BOARD terminal. Install a new WIRE TIE to secure the SENSOR CABLE and the three DRIVE MOTOR LEAD WIRES in the same location from which the previous WIRE TIE was removed. Step 13 Manually rotate the DRIVE MOTOR SHAFT. Check that all wiring is adequately dressed to clear rotating components. Redress wiring if required. Step 14 Reverse Steps 1 through 3 to return all parts to their proper positions. 18 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE LIFESPRINGS Tools Required: Phillips screwdriver, socket and ratchet set, hex key wrench set Step 1 Turn the power OFF at the on/off switch and then unplug the unit from the electrical outlet. Step 2 Remove the MOTOR COVER. (See “How To...”). Step 3 Remove the DECK and STRIDING BELT. (See “How To...”). Step 4 Insert a hex key wrench into the access hole located on top of the LIFESPRING. Loosen and remove the SCREW through the access hole. Step 5 Lift the entire LIFESPRING/ANTIROTATION CLIP ASSEMBLY from the machine. Slide the worn LIFESPRING out of the ANTI-ROTATION CLIP and replace with a new LIFESPRING. Step 6 Reposition the LIFESPRING/ANTIROTATION CLIP ASSEMBLY in place taking note that the lower lip of the ANTI-ROTATION CLIP rests against the FRAME of the Treadmill. Secure the ASSEMBLY in place with the SCREW. Step 7 Reverse Steps 1 through 3 to return all parts to their proper locations. Refer to “How To...Adjust and Tension the Striding Belt” for proper STRIDING BELT tensioning instructions. 19 Life Fitness Model 4000 Treadmill How To ... REMOVE AND REPLACE THE TRAY ( Optional Heart Rate Kit ) Tools Required: Phillips screwdriver Step 1 Turn the power OFF by unplugging the unit at the electrical outlet. Step 2 Remove the two SCREWS located on the underside of the TRAY which are securing the TRAY to the DISPLAY CONSOLE. Hold on to the TRAY during this procedure to prevent the TRAY from falling and possibly damaging the WIRE HARNESS. Step 3 Swing the TRAY slowly away from the back of the DISPLAY CONSOLE while the extended arms of the TRAY continue to rest on the HANDLEBARS of the treadmill. Step 4 Unplug the 3-PIN CONNECTOR of the Heart Rate Monitor Receiver HARNESS (located within the TRAY) from the matching 3-PIN CONNECTOR on the back of the DISPLAY CONSOLE. Step 5 Swing the TRAY down while lifting the extended arms of the TRAY from the HANDLEBARS and remove from the machine. Reverse Steps 1 through 4 to replace the TRAY and restore all parts to their original positions. NOTE: THE RED DOT ON THE HEART RATE MONITOR RECEIVER PLUGGED IN TO THE RECEPTACLE INSIDE THE TRAY SHOULD ALWAYS FACE TOWARD THE USER. 20 Life Fitness Model 4000 Treadmill NOTES: 21 Life Fitness Model 4000 Treadmill WIRING DIAGRAM Life Fitness Model 4000 Treadmill 1 PARTS IDENTIFICATION SN # 558000 - UP Overlay Bezel AK40-00058-0001 Eng/Eng AK40-00058-0004 Frn/Met Console Assembly AK40-00057-0001(R) Eng/Met AK40-00057-0004(R) Frn/Met Handlebar w/Grips OK40-01092-0001 Mono-Column OK40-01093-0001 Stop Key/Clip AK40-00035-0000 Motor Shroud AK40-00037-0002 Handrail Tube OK40-01006-0001 Wheel OK40-01021-0000 Leg Leveler 0017-00009-0796 2 Life Fitness Model 4000 Treadmill PARTS IDENTIFICATION SN # 558000 - UP Extrusion(RT) OK40-01165-0001 Extrusion(LT) OK40-01165-0002 End Cap(RT) OK40-01086-0007 End Cap(LT) OK40-01086-0008 Tray w/Heart Rate(optional) GK40-00002-0006 Tray(optional) OK40-01095-0001 Telemetry Receiver SK40-00045-0001 Handrail Mount OK40-01034-0001 Display Cable AK36-00017-0000 Vent Cover AK40-00039-0001 Push-Cap Kit ON/OFF Switch GK45-00002-0008 AK40-00052-0000 Removable Safety Switch 0017-00032-0191 3 4 Transformer 0017-00003-0751(120v) 0017-00003-0758(230v) Heatsink Assembly SK40-00033-0001(R) 120v/60Hz AK40-00033-0002(R) 220v/60Hz, 240v+ Lift Actuator OK40-01132-0000(120v/60Hz) OK40-01132-0001(220v/50Hz, 240v+ Optical Sensor AK40-00031-0000 Drive Motor Assembly SK40-00051-0001 (120v/60Hz) AK40-00051-0002 (220v/50Hz, 240v+) Front Roller Assembly AK40-00027-0000 Lift Pin Kit GK45-00002-0009 Deck Assembly AK40-00025-0001 Rear Roller OK40-01013-0000 Stride Belt OK40-01177-0000 Drive Belt OK40-01014-0000 TECKS PAK OK40-01026-0001 Life Fitness Model 4000 Treadmill PARTS IDENTIFICATION SN # 558000 - UP Life Fitness Model 4000 Treadmill COMMUNICATING BY FAX If you would like to submit a parts order, or if you need help troubleshooting a problem, we have included, for your convenience, a FAX form on the following page. Simply make a copy (or copies) of the FAX sheet and fill in the necessary information. You may FAX us at any time, 24 hours a day, to either of the numbers shown. A Life Fitness service representative will process your order, or respond to your problem, as quickly as possible. 5 CUSTOMER SUPPORT SERVICES PARTS ORDER SALE ( IF BOTH PLEASE INDICATE ) PRODUCT TROUBLESHOOTING WARRANTY NAME: CUSTOMER NO: DATE: PHONE: FAX: CONTACT NAME: METHOD OF SHIPMENT: 1 DAY 2 DAY GROUND PARTS ORDER FORM ITEM NO. 1 PART NUMBER DESCRIPTION QUANTITY 2 3 4 5 6 PRODUCT TROUBLESHOOTING PRODUCT NAME: SERIAL NO. DETAILED DESCRIPTION OF PROBLEM: PRODUCT NAME: SERIAL NO. DETAILED DESCRIPTION OF PROBLEM: TIME RECEIVED: TIME COMPLETED: TECHNICIAN NAME: CUSTOMER SUPPORT SERVICES 10601 W. Belmont Ave., Franklin Park IL 60131 PHONE (800) 351-3737 Toll Free or (847) 451-0036 FAX (800) 216-8893 Toll Free or (847) 288-3702 6 Life Fitness Model 4000 Treadmill NOTES: 7
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