Accessing Calibration Submodes

Accessing Calibration Submodes
Accessing Calibration Submodes
See Systems Operation, "Calibration Operation" for more information.
Note: Give no attention be to the position of the speed mode switch in submode 14. Upon entering
calibration mode (mode 5), the switch electronically defaults to the travel position. Particular attention
should be given to submodes 15 and 17.
Table 1
CALIBRATION SUBMODES
( Caterpillar Monitoring System Calibration Mode - Mode No. 5)
Submode
No. (1)
Engine
Status
Submode
Description
01
OFF
Left Pedal (Full
Up)
02
OFF
Left Pedal(Full
Down)
03
OFF
Center Pedal (Full
Up)
04
OFF
Center Pedal (Full
Down)
05
OFF
Right Pedal (Full
Up)
06
OFF
Right Pedal (Full
Down)
Procedure Description
Use the Service switch and the Clear switch in order to
scroll to Mode "-5-" on the monitor display. You will
start at submode 01. This Submode is the Left Pedal
Full Up Calibration. Push down on the calibrate switch
in order to move to the store position. The "accept"
symbol should be displayed if the signal that the ECM
is receiving from the sensor is within the allowable
tolerances. If the calibration is "not accepted", check
the pedal position and the linkages that are associated
with the sensor. Press the service switch in order to
scroll to the next submode. You must place the sensor
in the maximum position (upward or downward) and
depress the calibrate switch in order to move to the
store position. Verify that you see the "accept" symbol
for each submode. In Submodes 1 through 6, move the
pedals through the full range of travel three times. In
submodes 7 through 9, move the speed/direction
07
OFF
Speed/Direction
Control Lever
(Forward)
control lever through the full range of travel three
times. Return the pedals and the speed/direction control
lever to the position that is being calibrated. The
percentage value of duty cycle that is displayed must be
unchanged when the component is returned to the
position that is being calibrated. If the pedals or the
lever do not display a consistent percentage value of
duty cycle in the position that was calibrated,
recalibrate that position.
08 (2)
OFF
Speed/Direction
Control Lever
(Park)
09
OFF
Speed/Direction
Control Lever
(Reverse)
10
OFF
Check of Throttle
Lever Position
Switch
Select submode 10 and move the governor control lever
to the HIGH IDLE position. The status identifier should
display "00". The identifier should change to "11" when
the governor control lever is moved out of the HIGH
IDLE position. The switch should activate 3.0 mm
(0.12 inch) before the governor control lever engages
the HIGH IDLE notch. If the switch does not activate at
this point, adjust the position of the switch.
11
OFF
Check of Tilt
Lever Switch.
NOTE:
(S/N: 2ZN1750Up; 2DS1-Up;
3RZ1-Up)
show "--" for this
submode.
Move the tilt control lever from the hold position to the
tilt back position. The status identifier should change
from "11" to "00". The status identifier should show
"00" when the lever is first moved to the tilt back
position. If does not happen, make an adjustment to the
mechanical switch or to the linkage. Make the
adjustment in order to cause the status identifier to
change when the lever is just moved to the tilt back
position.
12
OFF
Check of the
Ensure that the brakes have not been set in Submode
Position Switch for 20. Move the speed/direction control lever out of the
the Parking Brake PARK position. The status identifier should range from
"00" to "11" when the lever is moved out of the PARK
position. If necessary, adjust the position switch for the
parking brake.
13
OFF
Part Number for
Application
Software, and
Reset of
Calibration
This submode allows you to retrieve the part number
for the current software that is installed on your
machine. The display will scroll through three lines of
information. The first two lines will be the actual part
number. The third line will be the change level.
Depress the calibrate switch in the "decrease" direction
and the clear switch in the "clear" position at the same
time. Hold both switches until the Accepted Symbol is
showing. The Accepted Symbol (upward arrow) means
that the calibration submodes (engine off and engine
on) have been reset to default values.
After resetting the calibration in Submode 13, you
must perform Engine OFF Submodes 1 through 9
and Engine ON submodes 15 through 17.
14
OFF
Check of Speed
Mode Position
Switch
Move the speed mode switch to the travel position
(rabbit). The status identifier should read "11". Move
the speed mode switch to the work position (tortoise).
The status identifier should read "00".
15 (3)
ON
Minimum Track
Speed Calibration
for Both Tracks
In the sequence that is described below, complete the
calibration procedures for Submode 15, 16, and 17.
Perform this calibration for both FORWARD and
REVERSE. Move the speed/direction control lever into
position 1. The speed range identifier should show "1"
when the lever is in the correct position. If the previous
calibration was correct, the machine should not be
moving at this time. Increase speed in order to ensure
machine movement for synchronization of the tracks in
position 1. Move the calibrate switch to the increase
position. You may need to click the switch a few times
in order to get the machine moving. The machine must
be moving in order to synchronize the track speed in
Submode 16. Proceed to Submode 16. After
calibrating Submode 16 in position 1, return to
Submode 15 in order to calibrate the minimum
track speed. After returning to Submode 15 from
Submode 16, Calibrate position 1 of the speed/direction
control lever by moving the calibrate switch to the
decrease position until the machine just stops moving.
Submode 15 is calibrated correctly when another click
of the calibrate switch to the increase position would
cause the machine to start moving. Submode 15 is
calibrated correctly when there is visible tension in the
tracks, but the tracks are not moving. After the
minimum speed is calibrated, return to Submode 16 in
order to synchronize the tracks in the maximum speed.
16 (3) (4)
ON
Track Speed
Synchronization
Calibration (Right
Track Speed
Adjustment)
In the sequence that is described below, complete the
calibration procedures for Submodes 15, 16, and 17.
Perform this calibration for both FORWARD and
REVERSE. While the speed/direction control lever is
in position 1, check the tracking of the machine. If the
tracking is correct, move the calibration switch once to
the increase position. Also decrease position once,
ensuring that the accept symbol is seen. This calibrates
the system for performing diagnostics on the solenoids.
It is necessary to see the accept symbol in each speed
range for proper calibration of the system. Now, adjust
the speed of the right track in order to match the speed
of the left track. The machine should be tracking
straight. Now, go back to submode 15 in order to
calibrate the minimum speed range. Remember that
the calibrate switch changes both sides equally in
Submode 15. After returning to Submode 16 after
setting the minimum speed range in Submode 15,
perform the calibration in Submode 16 for the
maximum speed in position 6. Then, proceed to
Submode 17 and perform that procedure in order to
calibrate the maximum speed. After returning to
Submode 16 after calibrating the maximum speed range
in Submode 17, perform Submode 16 for both
FORWARD and REVERSE in positions 2 through 6.
17 (3)
ON
Maximum Track
Speed Calibration
for Both Tracks
In the sequence that is described below, complete the
calibration procedures for Submodes 15, 16,and 17.
Perform this calibration for both FORWARD and
REVERSE. The maximum recommended speed
settings are 9.2 km/h (5.7 mph) for 953C, 9.5 km/h (5.9
mph) for 963C and 9.0 km/h (5.6 mph) for 973C. You
must obtain the Accepted Symbol in order to verify the
speed setting. Now return to Submode 16 and
complete the rest of that calibration. Perform that
calibration in each of the positions 2 through 5 of
the speed/direction control lever in independent
steps.
18
ON
Display for Engine
Speed (RPM)
Submode 18 shows the present value for the engine
RPM. The number 18 and a four-digit number should
be showing. The four-digit number represents the
engine speed.
19
ON
Display of the
Override Pressure
A four-digit number should be showing. The four digit
number represents the approximate override pressure in
kPa. The override pressure will be zero when the
speed/direction control lever is in the PARK position or
in the NEUTRAL position.
20
ON
Transmission Stall
Test
In submode 20, the display scrolls through engine
RPM, override pressure, and hydraulic oil temperature.
Submode 20 is used to set the parking brakes when you
perform a transmission stall test. Depress the calibrate
switch in the "decrease" direction and the clear switch
to the "clear" position at the same time. Hold both
switches until the Accepted Symbol is showing. The
Accepted Symbol (downward arrow) means that the
brakes can be released and the Accepted Symbol
(upward arrow) symbol means that the brakes remain
on. The brakes remain in the current state until
submode 20 is entered again and the state is changed.
The state does not change even if the engine or the
battery disconnect switch is turned off. After you have
set the brakes for a stall test, be careful when you move
the speed/direction control lever. The machine will
move if the brakes are worn excessively or if the brake
system is not functioning properly.
21
ON
Parking Brake
Solenoid Check
"00" will be showing when the parking brake solenoid
is not energized and "11" will be showing when the
parking brake solenoid is energized. Move the
speed/direction control lever out of the notch in order to
energize the solenoid. The solenoid will release the
brakes. Pressing the speed override and brake control
(center pedal) at this time should change the display
back to "00". If the response is not correct, adjust the
parking brake switch. It is also possible that the parking
brake is still set not to release in submode 20.
22
ON
Left Track Speed
Display
Submode 22 displays the actual value for the left track
speed in km/h. Typically, the speed needs to be above
3.0 km/h (1.9 mph) in order to be accurate.
23
ON
Right Track Speed
Display
Submode 23 displays the actual value for the right track
speed in km/h. Typically, the speed needs to be above
3.0 km/h (1.9 mph) in order to be accurate.
24
ON
Fuel Flow
Measurement
Refer to the procedure for the measurement of fuel flow
in the Power Train Testing and Adjusting manual for
your machine for more information on Submode 24.
25
ON
Implement Pilot
Pressure Switch
for Tilt (Check).
Note: (S/N: 2ZN11749; 2DS1-Up;
3RZ1-Up) show "-" for this submode
Move the tilt lever back and forth from the HOLD
position to the TILTBACK position. The status
identifier should change from "11" to "00" when the
lever is moved to the TILTBACK position.
26
ON
Signal Pressure for
the Left Motor
A four-digit number should be showing. The four digit
number represents the approximate signal pressure in
kPa for the left drive motor.
27
ON
Signal Pressure for
the Right Motor
A four-digit number should be showing. The four digit
number represents the approximate signal pressure in
kPa for the right drive motor.
ON
Sensitivity
Adjustment of the
Steering Pedals
NOTE: 3RZ1-Up
shows "--" for this
submode.
Submode 28 adjusts the rate of response of the machine
to the input of the steering pedals. Press the calibrate
switch in order to select "HI" or "LO". The machine
operates normally in Submode 28 so you can compare
the two settings. Press the "SERVICE" switch and the
"CLEAR" switch simultaneously in order to exit the
calibration mode.
28
(1)
submodes for the current engine status (ON OFF) : engine OFF = submodes 01 - 13, engine ON = submodes 15 - 25.
Submode 14 is not used at this time.
(2)
Submode 08 calibrates the NEUTRAL position of the Speed/Direction Control Lever. It is important to place the
Speed/Direction Control Lever in the notch for the PARK position in order to properly calibrate Submode 08.
(3)
The hydraulic oil warmed to a temperature of 50 C (122 F) to 60 C (140 F) in order to perform Submodes 15,16, and
17. Stall the transmission in five second intervals in order to warm the oil. Wait for 10 seconds after each stall of the
transmission. After warming the oil, purge any air from the system by fully steering the machine in each direction
before resuming the calibration procedure. This temperature must be maintained throughout the calibration
procedure. Refer to Calibration of the Speed Ranges in Submodes 15, 16, and 17 for more detailed information.
(4)
After application software has been flashed or the calibration has been reset in Submode 13, an adjustment
must be made to each of the speed ranges in Submode 16. This is required to properly calibrate each two-stage
TEHC valve (steering valve). This adjustment must be made, even if the default setting for the direction of
tracking of the machine is correct. If the original direction of tracking is correct, move the calibrate switch to
the increase position or to the decrease position in order to make the tracking incorrect. Now, move the
calibrate switch in order to make the tracking correct. This must be done for each of the speed ranges.
Note: When the Caterpillar Monitoring System is placed in a calibration submode between 15 and 25,
the ECM de-energizes the synchronizing solenoid. This closes the synchronizing valve. The ports are
blocked.
Illustration 1
Switches
(1) Service switch. (2) Clear switch. (3) Calibrate switch.
g00398786
Illustration 2
g00688126
Main Display Module Of the Caterpillar Monitoring System
(4) Transmission system indicator. (5) Display area. (6) diagnostic code indicator "SERV CODE".
Service personnel can access the calibration submodes by using the service switches. Calibration
mode must be entered first. Then, the calibration submodes are accessible. The Hydrostatic
Transmission Electronic Control System provides normal operation until calibration mode (mode 5) is
entered.
To Enter Calibration Mode (Mode 5)
Illustration 3
g00402281
Display Area Showing -5- (Calibration Mode).
1. Press and hold both the "SERVICE" switch (1) and the "CLEAR" switch (2) .
2. Release the switches when "-5-" is showing in the display area (5) .
At this time, transmission system indicator (4) flashes. Calibration mode is active when this
indicator turns on. The system now enters the first submode that corresponds to the present
engine status. If the engine is off, submode 01 is entered. If the engine is on, submode 15 is
entered.
To Enter A Submode
Illustration 4
g00402286
Display Area
(7) Submode identifier. (8) Accept status identifier.
First enter calibration mode (mode 5). See the preceding topic To Enter Calibration Mode (mode 5).
After calibration mode is first entered, the system enters the first submode 01 or 15. This depends on
the state of the engine. The number that is showing on submode identifier (7) is the submode that is
currently entered. The only submodes that can be accessed are the submodes that correspond to the
current state of the engine. The Engine is OFF in submodes 01 through 12. The Engine is ON in
submodes 15 through 23. See the preceding Calibration Submodes chart.
1. Press and hold the "SERVICE" switch (1) .
2. Release the switch when submode identifier (7) is displaying the number of the submode that is
desired.
The different submodes are used to perform calibration procedures. The procedures for
calibration on the following pages will describe the actions that are needed in different
submodes.
To Store A Value Within Certain Submodes
Illustration 5
g00402288
Symbols Shown On Accept Status Identifier (8) .
(9) Accepted symbol. (10) Accepted symbol. (11) Not accepted symbol. (12) Not accepted symbol.
Note: The two accept symbols and the two not accept symbols verify the operation of the calibrate
switch. When the calibrate switch is in the UP position, accept symbol (9) or not accept symbol (11)
is used. When the calibrate switch is in the DOWN position, the accept symbol (10) or the not accept
symbol (12) will be used.
The calibration procedures on the following pages describe the required conditions for storing a value.
1. Press and hold the "CALIBRATE" switch (3) in the STORE position. At this time, the accept
status identifier (8) will briefly show the accepted symbol (10) or the not accepted symbol (12) .
If accept status identifier (8) shows accepted symbol (10) , the new value is accepted. If accept
status identifier (8) shows not accepted symbol (12) , the new value is not accepted.
2. Release the "CALIBRATE" switch. The accepted symbol (10) must be shown in order to store
the new value in the ECM.
To Adjust A Value Within Certain Submodes
The calibration procedures on the following pages describe the required conditions for adjusting a
value.
1. Press and hold the "CALIBRATE" switch (3) in the INCREMENT (+) or the DECREMENT (-)
position.
Each activation of the "CALIBRATE" switch changes the value that is being adjusted by a
certain amount. The "CALIBRATE" switch must be released and the switch must be pressed
again in order for the change to occur. During each activation of the "CALIBRATE" switch, the
accept status identifier (8) will briefly show accepted symbol (10) or not accepted symbol (12) .
Observe the status of the accept status identifier (8) during each activation of the
"CALIBRATE" switch.
If accept status identifier (8) shows accepted symbol (10) , the new value is accepted. If accept
status identifier (8) shows not accepted symbol (12) , the new value is not accepted.
2. Release the "CALIBRATE" switch. The accepted symbol (10) must be shown in order for the
ECM to store the new value.
To Return To Normal Mode
This procedure returns the Caterpillar Monitoring System and the hydrostatic transmission ECM to
normal mode.
1. Press and hold both the "SERVICE" switch (1) and the "CLEAR" switch (2) .
2. Release the switches when the symbol that represents the hourmeter is showing in the display
area (5) .
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