HDK Service Manual

OPERATION AND MAINTENANCE MANUAL

HDK VEHICLES USA LLC.

WWW.HDKEV.COM

CONTENTS

Decals……………………………………………………………………………………………….1

Front Wheel Alignment…………………………………………………………………………...3

Brake and Accelerator ……………………………………………………………………………7

Rear Axle and motor……………………………………………………………………………..11

Controller…………………………………………………………………………………………14

Charger…………………………………………………………………………………………...20

DC-DC converter………………………………………………………………………………...23

Speedometer……………………………………………………………………………………...24

Switches.. ………………………………………………………………………………………...26

Headlights..……………………………………………………………………………………....28

Taillights…………………………………………………………………………………………,28

Contactor.........…………………………………………………………………………………..29

Horn…………….………………………………………………………………………………..29

Relay………………………………………………………………………………….………….30

Fuses……………………………………………………………………………………………..30

Batteries………………………………………………………………………………………....31

Electrical System Trouble Shooting and Solutions….……………………………………......33

Tire tread………………………………………………………………………………………..34

Warranty Appendix

GENERAL INFORMATION

HDK Corporation mainly deals in five types of the Electric Vehicles, Electric golf car, Shuttle bus people movers, Utility carts, Engineer and transportation cart, Off Road electric cars, among which

DEL3022G series are electric golf cars. Our golf car is environment-friendly and suitable for use in golf course, Hotels and many other businesses. All the key components are imported from major brand name companies. The whole car is new fashion design. Offering stable performance, Flexible controls, and driving comfort. Our golf car can be used as people movers or utility cars in vacation villages, Villa areas, Resort hotels and private residential areas, Tourist scenic spots, Commercial and Industrial Facilities.

facilities or any other place where this type of golf car is allowed .

Parameter

Type

Passenger capacities

Dimension (mm) (L×W×H)

Approximate

Range (based on flat road at a speed of 20 km/h) (km/h)

Approximate

Maximum speed (gear ratio of

12.49:1/gear ratio of 10.25;1)

(km/h) Approximate

Maximum grade ability

Approximate

Minimum turning diameter (m)

Approximate

Brake distance (V=20km/h)

Approximate

Minimum distance floor(mm) Approximate from

Noise (DB) Approximate

DEL 3022G

2

2350×1180×

1780

80

20/29

30%

3.1

≤3.5m

110

63

DEL 3022G2Z

DEL 3022G Series Electric Golf Cart

DEL 3042G DEL 3042G2Z

4

2610×1180×

1780

4

3100×1180×

1780

6

3360×1180×

1780

DEL 3062G

6

4900×1180×

1780

75

20/29

28%

3.1

≤3.8m

110

63

70

20/28

25%

4.3

≤4.0m

110

63

65

20/28

22%

4.3

≤4.0

110

63

60

20/28

20%

5.5

≤4.5m

110

63

DEL3062G2Z

8

5160×1180×

1780

60

20/28

20%

6.8

≤4.5m

110

63

VEHICLE FEATURES

VEHICLES FEATURES

CHASSISES OF GOLF CARTS ALL USE

HOT-GALVANIZED-DIP CHASSIS , HDK

ASSURE YOU “NO RUST IN 15 YEARS”.

VEHICLE COLOR OPTIONS

HDK VEHICLE HAS DOZENS OF COLORS TO CHOOSE FROM

SPECIAL COLOR REQUEST WILL ALL BE DONE BY HDK

AND MAY COST EXTRA

③

1

DECALS

＊

Vehicle’s serial number

Manufacturing year

Vehicle’s serial number

Vehicles manufactured by HDK Corporation, all have vehicle serial numbers are on the left side of the chassis frame behind wheel. The front four numbers are the manufacturing year of the vehicle. The other five numbers are the vehicle’s serial number given by HDK Corporation. All the vehicles are documented. After the vehicles are sold out of the factory, HDK Corporation will track the vehicles by using the vehicle’s serial number as identity. Serial numbers are insurance warranty of HDK Corporation. Customers should aware of the importance of the vehicle’s

Serial Numbers

,

DON’T TEAR IT DOWN while using the vehicles or in routine maintenance .

＊

Steering Wheel decals

②

①

①. Steering wheel

②. HDK decal

③. Vehicle operating instructions decal

DECALS

＊

Charger’s decals

③

①

②

①

①

.Charger

②

.Charger’s indicating decal

③

.Charger’s stage display decal

④

.HDK charger’s information decal

⑤

.Caution and warning decal

④

⑤

2

3

WHEEL ALIGNMENT

＊

Front wheels camber adjustment

The camber angle and toe-in of both Front Wheels, are done by wheel alignment.

Intended to equalize each of the front wheels. For all HDK carts they have bolts on both side of the front wheels, used to equalize the turning radius in both directions

①

Measure the distance between the centers of the front tires at exactly the same height on front back of the front tires

②

Steering gear box, on both end have adjusting nuts

Loose the locking nut on the steering gear box with wrench, rotate tie rod with locking pliers to increase or decrease the Toe-in scale.

Adjust the front tires front distance and back distance, make the Toe-in scale as follow:

THE BACK DISTANCE SHOULD BE

3-8mm BIGGER THAN FRONT DISTANCE

REAR

FRONT

③

While adjust the front wheels Toe-in, one can use measurer and framing squares to measure the physical scales of the front wheels

Toe-in

Equal distances between tires and squares

4

①

WHEEL ALIGNMENT

＊

Front Wheels Turning Angle Adjustment

All HDK carts have bolts on both side of the front wheels, used to equalize the turning radius in both directions

②

③

Loose the adjust bolts on the steering gear box with wrench, rotate the bolts to equalize the turning radius in both directions

Turning angle

All HDK carts turning angles have been calibrated by HDK technicians. New carts sent out of

HDK factory, the turning angles have been set at maximum scale. For customers who want to change the turning angles. Follow the instructions (Figure ②).

CAUTIONS

The front wheels have to stay parallel symmetrical, to keep the vehicle in the most precise operating function. One can use measuring tools to measure the turning angles of the cart.

①

WHEEL ALIGNMENT

＊

Vehicle steering system

STEERING COLUMN

P.1

P.2

UNIVERSAL JOINT

5

STEERING GEAR BOX

For HDK vehicles, Steering is controlled through a rack and pinion steering assembly which is connected by a steering column to a steering wheel. For different steering requires the steering column of all HDK vehicles have two mounting positions as different angles and height options (FIGURE ①, P.1 /P.2). The mechanical operations are passed by universal joint that connects the steering column and steering box. Vehicle direction control is executed by steering gear box. All the steering operations are mechanical.

No manual adjustment to the rack and pinion gear assembly is required. A spring loaded self-adjusting mechanism is incorporated into the assembly.

①

②

③

6

WHEEL ALIGNMENT

＊

＊

＊

＊

＊

＊

＊

＊

＊

＊

＊

＊

＊

＊ Steering system maintenance

＊

＊

＊

＊

＊

＊

＊

＊

＊

＊

①.To assure the steering system in proper function all the mounting nuts and fasten rings should be solid tight.

②. The steering wheel should be installed on the splines of the steering shaft, making sure to align the match marks placed on the wheel and steering column.

While operate the steering wheel one should stop turning when it comes to the dead end of the turning angle, otherwise may damage the steering wheel cause the nut to strip .

③ The dust cover on the universal joint or and the steering box should be kept in perfectly tight to keep dust or other foreign objects and water to enter inside of the mechanical parts ( FIGURE①).

④The joint parts of the steering system or the connection spot should add lubricant per month to keep the joint part, shaft perfectly smooth (FIGURE②).

⑤ The front tire pressure should be the same, tires should be at the same worn out situation and the wheel nuts should be retighten periodically, to reduce the shake of all the steering system components.

Steering system malfunctions

Ⅰ.Steering wheel too heavy to operate

To eliminate the heavy steering wheel malfunction, one can do as followed:

①. Check the connection of the steering system and be sure all the bolts and nuts are tight. Add lubricant to the joints.(FIGURE③)

②. Lift up the front wheels with a jack.(FIGURE④)

③. Loose the bolts that connect the universal joint to steering column and steering box (FIGURE⑤)

④. Loose the jack put down back the vehicle, shake the vehicle for multiple times, to make the connection of the universal joints and steering column, steering gear box perfect. Fasten back the bolts make it solid tight.

Follow the steps above will make the steering wheel getting light

④ ⑤

If still can not perfectly make the steering wheel light, one can operate by following (FIGURE ⑥):

Use a chisel and a hammer to hit the connection spot of the joint ball of the steering box and turning knuckle, multiple times until the steering wheel is easy to rotate in little strength.

⑥

Ⅱ. Direction control not precise

Check the system components see whether all the components are in functioning properly, adjust the front wheel camber to equalize the front wheels, make left and right wheels symmetrical (check camber adjustment chapter), equalize the turning angles of both side of the wheels make it parallel. Check the tire pressure of both side of the front wheels make sure it is the same, and the tire wear is even out of the front tires.

CAUTIONS

PERIODIC MAINTENANCE OF THE STEERING SYSTEM IS REQUIRED, TO INSURE THE VEHICLE IN GOOD

CONDITION OF DIRECTION MANIPULATION. THE DIRECTION CONTROL FAIL MAY CAUSE INJURIES TO THE

PASSENGERS.

BRAKE

AND ACCELERATOR

＊

Brake and accelerator assembly

①

Operating method figures

②

8

③

①

Accelerator pedal operation

The vehicle speed is controlled by the operation of accelerator pedal.

②

Brake pedal operation

The vehicle uses the brake pedal operation to decrease the vehicle speed.

③ parking pedal operation when stopping the vehicle, the parking pedal operation will keep the vehicle locked in place, no matter if it is on the ramp or on flat ground.

9

BRAKE AND ACCELERATOR

＊

Brake and accelerator adjustment and maintenance

Ⅰ

.Too hard to unlock the parking pedal

①

Disassemble the height adjusting rod in the back of the parking pedal .

Rotate the nut on top of the rod, change the rod’s height

If it is too hard to lock/unlock the parking pedal, one should adjust the brake pedal as the FIGURE① shows.

Change the height of the sustain rod of the parking pedal will make the parking pedal easy to lock/unlock.

Ⅱ

. Brake pedal, too heavy or brake not in proper function

If the brake of the vehicle not in proper function, either too tight or too loose. One can make certain things go as followed to adjust the brake into proper functional state.

ⅰ

. Use wrenches to adjust the tightness of the brake cables (FIGURE ①).

②

③

Adjust the tightness of the brake shoes. Remove the brake drum, use a screwdriver to adjust the tightness of the brake shoes. Rotate the adjusting wheel in proper scale to make the space between the brake shoes and brake drum minimum(brake shoes are perfect tight but don’t rub the brake drum while vehicle loose the brake in running operation )(FIGURE ②).

Take out the brake shoes and clean the interior space. Clean the brake shoes shreds and mental dust that rubbed off from brake drum (the contact of brake shoes and brake drum ) (FIGURE ③).

④

10

BRAKE AND ACCELERATOR

＊

Brake and accelerator adjustment and maintenance

Ⅲ

.Accelerator adjustment

The structure of

②

accelerator

Microswitch of accelerator

RUN HALT

①

When the vehicle is operated (the accelerate pedal be depressed), the micro switch will be in RUN position the micro switch will give out a signal, To activate the vehicle’s electrical circuit system into work and move car. When the vehicle is stopped the micro switch will in HALT position the vehicle’s

POT

The POT the accelerator use is 0-5KΩ changeable resistor. The throttle capacity is associated to the POT, when the vehicle is operation (the accelerate pedal is depressed), the

POT’s resistance value ranges from 0-5KΩ. The accelerator as you can see from figure① the

POT and micro switch are fixed in specific position connected with mechanical gears, when the pedal is stepped the gears will rotate with the shaft, the micro switch will be triggered and POT resistance will change according to the step angle .

The accelerators HDK vehicles use for golf series cars are #3 accelerators, accelerators are specially designed by HDK to match the vehicles’ speed control demands.

ACCELERATOR IS EXTREMLY IMPORTANT FOR VEHICLE’S SAFETY, ONLY TRAINED

TECHNICIAN’S SHOULD BE ALLOWED TO REPAIR OR SERVICE THE ACCELERATOR.

TECHNICIAN’S SHOULD HAVE KNOWLEDGE OR EXPERIENCES OF ELECTRICAL VEHICLE

REPAIRS.

ANY MODIFICATION OR CHANGES TO THE ACCELERATOR MAY AFFECT THE STABILITY OR

HANDLING OF THE VEHICLES MAY CAUSE SEVERE PERSONAL INJURY AND OR CAUSE DEATH.

10

BRAKE AND ACCELERATOR

Eliminate accelerator malfunctions and accelerator maintenance ⅰ

. Accelerator no respond

1. Be sure power key is on “ON” position, F/R switch in F or R position.

2. Remove the accelerator assembly part’s plastic lid.

3. Check the micro switch’s position. When the pedal is loosed the micro switch should stay at

HALT position, and when the accelerator pedal is depressed the micro switch should stay at RUN position.

4. depress the accelerator pedal see if the cams rotate as the shaft rotates if not, see which cam can not rotate.

5. If all the accelerator’s mechanical functions in good condition check the POT’s resistance value with a multimeter (see figure ①), If the POT values are not right replace it with a new POT Switch.

6. If all the accelerator’s mechanical functions in good condition, check the micro switch see if it is connected while it is on RUN position if not change it with a new one.

Use the multimeter to mesure the resistance value of the left and right pins see the if the value is 5 KΩ.

● ●

Use the multimeter to measure the resistance value of the left (right)and middle pins step the pedal as well see if the value is range from 0-5 KΩ.

● ●

ⅱ

.vehicle still running when loose the accelerator pedal

1. Turn off the vehicle’s power.

2. Remove the accelerator assembly’s cover lid.

3. Keep the accelerator pedal in loose position state, and check the micro switch position, see if while it is in the HALT position (PAGE 9). If the accelerator micro switch still in the RUN position, if so Then adjust the accelerator height restraint bolt (FIGURE) to adjust the height. Make the accelerator’s micro switch stay at

HALT position while loose the accelerator pedal.

4. If the micro switch is in good working condition, then one should check the solenoid contactor.

0

①

②

Use a measurer to measure the height of the accelerator pedal

③

Adjust the height of the accelerator pedal by rotate

the height adjusting bolt.

11

BRAKE AND ACCELERATOR

Ⅳ

. Brake and accelerator maintenance

0

1. The strength to press down the brake pedal is about 30kgf. Pay attention to the distance between the brake pedal and the front of the cart.

2. The brakes on golf carts are self-adjusting. The strength for parking brake is about 30kgf. Of parking limits should be accurate reliable, and fully brake. Otherwise please readjust it.

3. The accelerator assembly box should be kept water-proof, water will cause short circuit of the electronic components inside of the accelerator assembly box. When one removes the cover lid and assembles it back, one should put silicone gel on the fringe of the assembly box then put back the lid, fasten the screws tight to keep water from leaking into the assembly box .(FIGURE ①)

4. The springs that attached to the brake or the accelerator, should always have good and flexible, to pull back the brake or accelerator.

One should check the springs one time flexibility per month to prevent cart operating hazards. Low flexibility of the accelerator spring may cause the car still running when the accelerator pedal is in the HALT position. It may cause severe injuries or death to persons.

①

WHI

BE SURE TO TURN OFF THE VEHICLE POWER WHILE CONDUCTING ANY OPERATIONS TO THE

ACCELERATOR, BE SURE TO KEEP ON FLAT GROUND WHILE CONDUCTING THE BRAKE ASSEMBLY

MAINTENANCE, ANY OF THESE MISOPERATIONS MAY CAUSE THE CAR TO RUN UNINTENTIONLY

AND MAY CAUSE INJURIES TO PERSONS AND PEOPERTY.

DO NOT TRY TO DRIVE THE VEHICLE TO MAINTENANCE SPOT WHEN THE CAR

HAS A BRAKE OR ACCELERATOR MALFUNCTION. ANY INTENTIONS TO TRY TO

DRIVE THE VEHICLE MAY CAUSE CAR LOSE CONTROL AND MAY CAUSE INJURIES

OR DEATH TO PERSONS OR PROPERTY.

12

REAR AXLE AND MOTOR

0

MOTOR OPTIONS

3KW /4KW /5KW

HDK vehicles use ADC motors as a standard configuration. ADC motors are a first class motor on the market today. Excellent performance, highly dependable, low energy consumption. Customers can choose different rated voltage DC motors. We have 3KW

/4KW/5KW motors available as customer options

Golf cart, the standard configured rear axle ratio is 10.25:1 high speed. Also can be

12.49:1 as another option for power. In case customer want to increase the vehicle’s torque or the vehicle’s maximum speed customer can choose different rear axles as options .

Due to different brakes required by customer’s, Rear axle have mechanical and hydraulic brake systems , the standard configuration is mechanical brake axles. But also customer can option to upgrade to hydraulic brake axle, as long as it is requested by customer in writing.

HDK REAR AXLE RATIO OPTIONS

10.25 :1/12.49:1

①

BRAKE DRUM ②MOTOR

③

FASTEN BOLT ④SNAP WASHER⑤WASHER

13

REAR AXLE AND MOTOR

Ⅰ

. Rear axle maintenance

①

0

Make sure all the nuts on rear axle gear box all fastened up (in case oil leaking). Make sure the gear box have enough capacity of lubricate oil before use (90%of the whole capacity )

CAUTIONS

THE REAR AXLE GEAR BOX SHOULD BE INJECTED WITH HEAVY DUTY

AUTOMOTIVE GEAR OIL 90W AND CHANGE OIL PER 12 MONTHS .

②

Monthly customer should take off the brake drum, and clean the brake shoes and backing plates. One can use high velocity air to blow off the interior contamination . Check the brake shoes, whether the brake shoes come loose or not .

CAUTIONS

MONTHLY CLEARANCE ADJUSTMENTS ARE EXTREMLY NECESSARY,

IF NOT THE BRAKE SHOES SHED DUST MAY CAUSE DAMAGE TO THE

BRAKE MECHANICAL PARTS, AND WILL INCREASE THE NOISE LEVEL

OF THE REAR AXLE

③

Every three months customer should take off the brake drum and add lubricate oil to the mechanical parts in the brake drum. to the cams and shafts. For the shed dust of the brake shoes may cause the mechanical parts malfunctions.

CAUTIONS

CUSTOMERS SHOULD BE CAREFUL ABOUT THE OIL SPRAY WHILE

ADD OIL TO MECHANICAL PARTS. DO NOT GET THE BRAKE SHOES’

SURFACE CONTAMINATED WITH OIL. IF SO PLEASE CLEAN THE

BRAKE SHOES SURFACE WITH RAG AND BRAKE CLEANER THEN RUB

THE SURGFACE WITH ROUGH SAND PAPER MULTIPLE TIMES .

Lubricating grease

④

14

REAR AXLE AND MOTOR

Ⅱ

. Motor maintenance

0

The electric cables connected to the motors should be big enough. Standard cables should be 40mm

2 or more. Because the cables have tremendous current burden, if the cables not big enough it will generate lots of heat, and the big current will brake the cables cause brake circuit .

The nuts fastened to the motors should be solid tight, loose nuts will cause big electric sparks, and may cause severe motor damage or explosion.

Motor’s malfunctions ⅰ

.Motor is extremely hot and cannot operate

1

● ●

●

●

●

●

①

● ●

⑴

Check the fasten nuts on the top of the DC motor be sure they are tight. The DC motor may have internal coils break up. Turn off the vehicle power disconnect the cables attached to the motor. Use a multimeter and set it to resistance function. Measure the four brass post on the motor as the figure① shows. the motor has two coils and if either one has a break in the circuit the motor won’t operate, and the motor will generate more heat than normal.

Measure the resistance of the NO .1 post, and NO. 2 post as the figure①shows if either of the two have no respond value, then we can be sure the motor has a internal coil break.

Disassemble the motor and find out the break spot and repair broken or break in the coil.

⑵

Disassemble the outside cover of the motor and check the carbon brushes, whether it is in proper condition. If it is extremely worn out then the motor may not have good contact conditions. Change the brushes with new pair .

ⅱ

.Motor creates too much noises

②

⑴

Check the bolts that fasten the motor to the rear axle, the bolts should be solid tight and if they come loose may create much more noise and will cause the shaft of the motor to get damaged.

⑵

The mechanical parts of the motor may become lack of lubricate grease after certain time’s usage. Add grease to the rotor of the motor bearings .

⑶

Be sure all the bolts and nuts are fasten up inside of the motor.

15

CONTROLLER

Ⅰ

.1243 controller

0

ⅰ

.FEATURES

⑴

Unparalleled Driving and Braking Feel

• Regenerative braking allows shorter stopping distances, increases usable battery energy, and reduces motor heating. The half bridge armature drive topology allows regenerative braking down to zero vehicle speed.

• ”Ramp Restraint” feature provides automatic electronic braking that restricts vehicle movement while in neutral.

• Vehicle speed is controlled by the throttle, at all times including down hills.

• “Load Compensation” provides improved loaded versus unloaded speed regulation by compensating for losses in the armature.

⑵

Fully Programmable

• Fully compatible with the Curtis Models 1311 and 1314 programmers for programming, test, and diagnostic information.

• MultiMode™ feature allows four user selectable vehicle operating profiles. Each profile has separate drive current limits, brake current limits, acceleration rates, brake rates and maximum speeds.

①

ⅱ

.Specifications

A 16-pin Molex low current connector in the controller provides the low current logic control connections

②

A 4-pin low power connector is provided for the handheld programmer. A complete 1311 programmer kit, including the appropriate connecting cable, can be ordered from HDK company

Pin 1 receive data (+5V)

Pin 2 ground (B-)

Pin 3 transmit data (+5V)

Pin 4 +15V supply (100mA)

Pin 1 load sensor input [optionall

Pin 2 Fault 1 output / pump input Fault 2 output

Pin 3 Fault 2 output

Pin 4 main contactor driver output

Pin 5 throttle: 3-wire pot high

Pin 6 throttle: 0-5V; pot wiper

Pin 7 throttle: pot low

Pin 8 auxiliary driver output (typically

Pin 9Mode Select 2 input

Pin 10 emerg. reverse check output [optional]

Pin 11 reverse input

Pin 12 forward input

Pin 13 emergency reverse input

Pin 14 Mode Select 1 input

Pin 15 interlock input

Pin 16 keyswitch input (KSI)

Hanheld Programer

CONTROLLER

Ⅱ

.1243 controller maintenance and configurations

16

0

CONTROLLER MAINTENANCE

There are no user serviceable parts in the Curtis 1243

GEN

2 controller. No attempt should be made to open, repair, or otherwise modify the controller. Doing so may damage the controller and will void the warranty.

It is recommended that the controller be kept clean and dry and that its fault history file be checked and cleared periodically.

CLEANING

Periodically cleaning the controller exterior will help protect it against corrosion and possible electrical control problems created by dirt, grime, and chemicals that are part of the operating environment and that normally exist in battery powered systems.

When working around any battery powered vehicle, proper safety precautions should be taken. These include, but are not limited to: proper training, wearing eye protection, and avoiding loose clothing and jewelry.

Use the following cleaning procedure for routine maintenance.

1. Remove power by disconnecting the battery.

2. Discharge the capacitors in the controller by connecting a load(such as a contactor coil or a horn) across the controller’s

B+

and

B-

terminals.

3. Remove any dirt or corrosion from the connector areas. The controller should be wiped clean with a moist rag. Dry it before reconnecting the battery. The controller should not be subjected to pressured water flow from either a standard hose or a power washer.

4. Make sure the connections are tight, but do not over tighten them. maximum tightening torque specifications for the battery and motor connections are limited .

FAULT HISTORY

A programming device can be used to access the controller’s fault history file. The programmer will read out all the faults the controller has experienced since the last time the history file was cleared. Faults such as contactor faults may be the result of loose wires; contactor wiring should be carefully checked. Faults such as over temperature may be caused by operator habits or by over loading. After a problem has been diagnosed and corrected, it is a good idea to clear the history file. This allows the controller to accumulate a new file of faults.

By checking the new history file at a later date, you can readily determine whether the problem was indeed fixed.

Controller configurations

See 1243 controller parameter data sheets

CAUTIONS

CUSTOMER SHOULD NOT TRY TO OPEN THE CONTROLLER BOX IN ANY

CIRCUMSTANCES.

CONTROLLER

Ⅰ

.1266 controller

17

0

18

0

19

0

20

0

CHARGER

Ⅰ

.Charger’s specifications

21

0

ⅰ.

Charging display process

TRE BUL

CONSTANT

VOLTAGE

ⅱ

.LED display

FLOAT

CHARGE

FULLY

CHARGED

1 Red LED steady on: error occurred

2 Orange LED flashing: Low AC voltage

3 Red LED & green LED flashing alternately(slow):<80% Charger

4 Red LED & green LED flashing alternately(frequent):<80% Charger

5 Green LED steady on : battery fully

Charged

HDK Charger is highly intellective, charger can be calibrated to be 36V or 48V. the charger has: electronic protection-auto-reset , electronic current limit.

Charger’s calibrations and malfunction sloutions ⅰ

.Alert and error display

Code Reason

E01

E02

E03

E04

E05

Solving method

No charging function .

Battery temperature is too high or too low.

No battery connection; battery voltage too high or too low.

Battery is not fully charged for long time(overtime charging)

Battery cannot have TRE charging, charging to the least normal voltage .that means voltage unable to be charged in.

Inspect if the connecting terminals are in proper connection

Check if the battery temperature is in the range of-10℃-50℃

Inspect if the battery voltage is in the range (48:12V to

55.2V/36V:9V to 41.4V).In-charging display E02,48Vbattery mode, battery voltage is above 67.2;In 36V battery mode, battery voltage is above 50.4V.

Inspect if the battery connecting terminals are loose or rusted

Inspect if the battery is shorted or individual battery cell damaged

Charger internal temperature high

Ensure that surrounding temperature is not too high,and ventilation is good ,and the charger should be turned off .

E06 Charger internal damage Turn off the charger and send it to service dept for repairing

E07

RL1

Grid power low

Grid power alert

Inspect the grid power

Inspect the grid power

CHARGER ⅱ

.Charger’s calibration

BEFORE CHARGING, HDK ON

BOARD CHARGER HAVE TO BE

STRICTLY CALIBRATED TO CORRECT

CODE WHICH IS DESIGNED FOR

SPECIFIC BATTERY

22

0

① b11 b13 b14 b05 b06 b08 b09

48V b01

36V b51 b02 b03 b04 b52 b53 b54

BATTERY

Trojan flooded

PROGRAM CODE CONTRAST TABLE

48V 36V BATTERY

Trojan T105 flooded

Discover 80-150AH AGM

Discover AGM b15 b16 b17 b18 b65 b66 b67 b68

Trojan T875

Us 2000 flooded

US2200 flooded

Us 250hc flooded b55 b56 b58 b59 b61

US battery flooded

Trojan 30XHS

Trojan J305

Generic 200-255 Ah flooded

Trojan 1275 b63 b64

Trojan T605

12TB-115AGM b19 b20 b21 b22 b26 b69 b70 b71 b72 b76 b27 b28 b77 b78

6TB-170AGM

Generic 140-200Ah AGM

Generic 200-250 Ah AGM

Generic 250-335 Ah AGM

Generic 140-200Ah flooded

Generic 250-335Ah flooded

Generic 400Ah flooded

Operation illustration

Ⅰ

. Inspection of the charger acquiescent charging category

Entering display charge category mode: ⅰ

.Disconnect AC input wires.

ⅱ

.Disconnect between the charger output and battery.

ⅲ

.A. when AC input is connected the display will show the program revision. After around 5 seconds later, it will show the charger output voltage and complete the self-inspection process.

B. Display continues to show b01 10 seconds, exit the acquiescent charging mode, display shows E02.

ⅳ

.Disconnect AC in put wires. If there is need to change the charging category setting, the positive (Red)/ negative (Black) terminals of the output wires should be connected to the battery positive (Red)/ negative

(Black) terminals. After connecting the grid power, the charger can start charging the battery code.

ⅴ

.Turn on the power of the calibration box, press button “

+ “to increase code number, press “

-“ to decrease the code number; until to the right code of the battery .

Press “SAVE” button to save the setting, the code display will flash after save the setting.

23

CHARGER ⅲ

Charger’s default setting

0

Ⅰ

.Enter the battery selection mode;

Ⅱ

.when the display shows the default charging category, charger output wire negative terminal (black/white wire) connects to battery negative terminal. Use the charger output wire positive ring terminal to touch the battery positive terminal for 3 seconds (+/-0.5 second). Remove the ring terminal. The display shows addition of the battery category (eg. b01 adding to b02. Remark: If the charger output wire positive ring terminal is removed, the display shows the battery charging category without addition. this illustrate that the touching time is not sufficient for 3 seconds. Please repeat the operation).

Ⅲ

.If this continues to increase, steps 2 should be repeated (remark: if the operation stop time exceeds 30 seconds during the operation process, the display will show E02. Please disconnect the grid power until nothing shown on display then connect to grid power again and repeat the setting).

Ⅳ

.If the current setting needs to be stored the charger output wire positive ring terminal should be used to touch the battery positive terminal for more than 10 seconds. When the replay activation sound is heard and the display flashes then the new setting is successfully stored;

Ⅴ

.disconnect the grid power until nothing shown on the display. Then re-connect the grid power, and inspect if the charger charging category is correct.

Ⅵ

. After inspection confirm correct the grid power should be disconnected until nothing shown on display the charger output wire positive terminal (red)should be properly connected to the battery positive terminal. Then connect to the grid power and start charging.

CAUTIONS

USE THE CHARGER ONLY WITH AN ALGORITHM SELECTED THAT IS APPROPRIATE TO THE SPECIFIC

BATTERY TYPE. OTHER USEAGE MAY CAUSE PERSONAL INJURY AND DAMAGE. LEAD ACID BATTERIES MAY

GENERATE EXPLOSIVE HYDROGEN GAS DURING NORMAL OPERATION.KEEP SPARKS FLAMES, AND SMOKING

MATERIALS AWAY BATTERIES.

PROVIDE ADEQUATE VENTLIATION DURING CHARGING. NEVER CHARGE A FROZEN BATTERY. BATTERY

CAPS SHOULD BE REMOVED WHILE CHARGING.

RISK OF THE ELECTRIC SHOCK CONNECT CHARGER POWER CORD TO AN OUTLET THAT HAS BEEN

PROPERLY INSTALLED AND GROUNDED IN ACCORDANCE WITH ALL LOCAL CODES AND ORDINANCES. A

GROUND OUTLET IS REQUIRED TO REDUCE RISKOF THE ELECTRIC SHOCK. DO NOT USE GROUND ADAPTERS OR

MODIFY PLUG DO NOT TOUCH UNINSULATED PORTION OF THE OUTPUT CONNECTOR OR UNINSULATED

BATTERY TERIMALS. ALLWAY USE A SURGE PROTECTOR ON AC CORD TO PREVENT DAMAGE TO CHARGERS.

CHILDREN SHOULD BE SUPERVISED TO ENSURE THAT THEY DO NOT PLAY WITH THE APPLIANCE

①

24

DC-DC CONVERTER

0

Specifications

Out cover Material: Aluminum

Input voltage: 30-70V

Input current : <5A

Working frequency: 100KHZ

Output voltage: 12+0.1V

Max output current: 18A(12V)(continuing work for 12 hours ).

Water-proof level: ≥IP54

Working temperature: -40℃-85℃

Lifetime: > 10000 hours

Insulating strength: 1000VDC

＊

DC-DC converter maintenance

HDK vehicles use DC-DC converters special designed for vehicle’s control circuit diagram .HDK DC-DC converter have automatic over current, over heated. short circuit, over current protection and recover functions.

The burden of the vehicle system should not be over 150W (total power of all the lights),If so the DC converter will shut off automatically in certain time .

DC-DC converter malfunctions

Ⅰ. All the lights and horn can not switched on

Check the Input

Ⅱ.Light get dark when turn all the lights and horn be used

Ⅲ. DC converter extremely hot while working

Ⅳ.All the lights shut off automatically after short time turn on the lights.

OUTPUT

②

25

SPEEDOMETER

Specifications

0

①

②

Working voltage: 6~15V DC "It does not allow to higher than 15V "

The reverse geostatic: >200V

Working temperature: -30 ℃ ~ +80 ℃ <suitable for the cold area >

Store temperature: -35℃ ~ +85 ℃

The speed shows the maximum: 199.9 Km/H

The speed show value: measured values

RPM shows the maximum: Self-defining (Acquiescence 6000RPM)

The electric consumption restored way: OCR / HVR

Single course distance maximum: 999.9 Km

Total mileage maximum: 300,000 kilometers

Single-run time maximum: 999 hours

Total running time maximum: 9999 hours (Zero clearing after exceeding)

The precision of mileage value: 0.1 Km Single-run; 1 Km/H Total running;

Display mode of running time: Hour: Minute / # Hour

Mileage value inaccuracy: -1%

The voltage of signal of the indicator lamp: +10 ~ +15V

All functions show at switch on show time: 3 seconds

The signal of the switch input voltage: 10V min; /15V max; DC

LCD type: TN (concrete parameter is omitted)

Functions

1. Speed display by digital (are precise as to 0.1 Km/H, anti-shake)

2. The bar code shows the RPM / Speed

3. Electric consumption display (6 shelves, have two kinds of alarm)

4. Single course distance (TRIP)

5. Total mileage (ODO)

6. The electric car operates once riding time (RT)

7. The electric car operates total time (RTT)

8. Kilometer / Mileage switching

9. The inside parameter adjusting

10. Turn left, turn right, high light, parks, trouble, low light LED indicator lamp

11. Light green back light / always lighting

＊

Speedometer maintenance

The speedometer is highly integrated instrument, to keep it in good working conditions one should keep in usage under the specifications limits of the speedometer. eg. the working environment should be between -30 ℃ ~

+80 ℃,the working voltage should be between 6~15 V .

The speedometer should be installed properly on the front of the vehicle and it should be kept firmly to prevent it from loose or falling from vehicle. The wire harness that connects the speedometer to the circuitry should be fixed on the chassis with plastic fastening straps to prevent the wiring connection from breaking.

Speedometer should stay away from water flooding, water may cause the speedometer internal short circuit, stay away from fire or chemical objects. High temperature or acid may cause permanent damages to the LCD screen display.

26

Speedometer malfunctions

Ⅰ. Speedometer has no showing

Check the working power supply wire connection.

Ⅱ. Speedometer stays static have no current vehicle speed numbers show on the speedometer

0

Check the signal wiring of the speedometer, the “RMP” terminal should have in coming signals, if it doesn’t have signal coming in, one should check the connection wires conditions from the speed sensor on the DC motor to the speedometer, check whether there is any torn up on wires or loose connection of plugs. If the connections are all ok then one should check the speed sensor condition. If it is broken a new speed sensor is required.

Ⅲ. The speedometer LED indicating lights do not work as responds to the related operations, such as when turn the turning lights but the indicating LED does not light up and flash .

Check the speedometer plug connection with wire harness.

Speedometer Setting

See speedometer operation data sheets

CAUTIONS

WHEN THE CAPACITY OF THE BATTERY REDUCES, THE ELECTRIC CONSUMPTION INDICATE SHOWS IS

REDUCED, THIS VALUE SHOWING IS NOT RISEN BY VOLTAGE OF THE BATTERY, ONLY WHEN THE VOLTAGE OF

THE BATTERY ACCORDS WITH “RCV” CONDITION, ELECTRIC CONSUMPTION IS RESTORED TO THE FULL LEVEL

INDICATE.

AFTER INSERTING THE ELECTRIC INSTRUMENT, PLEASE CHARGE TO BATTERY IMMEDIATELY, UNTIL TO

FULL LEVEL IT COULD MAKE THE ELECTRIC INSTRUMENT POINT OUT ACCURATELY VALUE .

WHEN THE SPEEDOMETER PARAMETER IS SET UP, DATA ARE KEPT IMMEDIATELY. IF PRESENT THE FAULT OF

OPERATING PROGRESS, THEN PLEASE CUT OFF THE SWITCH OR CUT OFF THE INSTRUMENT POWER DIRECTLY

BEFORE PARAMETER IS SET UP AND FINISHED .

CARRY OUT THE PARAMETER AND SET UP PROBLY WILL DESTORY INSTRUMENT /THE NORMAL RUNNING

OF THE SAME FUNCTIONS, PLEASE MAKE SURE THE PAREMETER DATA IS CORRECTLY, IF HAVE ANY FURTHER

PROBLEMS, PLEASE CONTACT TECHNICIAN ATTENDANT.

⑤

SWITCHES

F

②

High speed /Low speed switch

R

③

27

0

Batteries capacity indicator

④

Key switch

①

①

.Forward/Reverse switch on the body ②Forward/Reverse switch on the dash board (①,② locations of the Forward/Reverse are optional ) ③High speed/Low speed switch, Batteries capacity indicator,

Key switch ④Power switch ⑤Switch assembly

Switches maintenance and malfunctions’ solutions

ⅰ

.Mechanical switches

For mechanical switches, one should always keep it proper positions while operate the vehicle. Such as when one choose to drive in high speed state one should press the

High speed/Low speed switch make it stay at High speed. Choose to operate the vehicle forward one should make the F/R switch stay at F position.

When mechanical switches are not easy to press and switch modes, please check the whether there are objects caught in the switches, if so clear the switches take out the objects.

When switches are in proper mechanical functions, but cannot control the vehicle, please check the wire harness, check whether the wires come loose or not, if so reconnect the wires and make it tight. If after check the wire harness and is in perfect connection, but the switches still cannot operate, please check the switch with multimeter, check whether it is connected between pins whether switch the states. If the switch does not respond, the switch needs to be changed.

28 ⅱ

.Batteries indicator maintenance and malfunctions

0

⑴

Connecting :

Pin1=Battery+

Connects to the vehicle’s main positive (+) terminal Use as short a wire as needed.

Pin2=Battery-

Connects to the vehicle’s main negative (-) terminal use as short a wire as needed.

Note: pins 1&2 are connected across the total battery pack.

Pin3= No option

Pin 3 is left open.

Pin4=key switch

Connects to the Battery + through the switched terminal of the key switch.

⑵

Display :

① only when the battery is properly charged is the right-most LED lit.

②As the battery’s state-of-charge decreases successive LEDs light up. only one on at a time.

③The 2nd-from-left LED flashes, indicating “energy reserve” (70% depth of the discharge).

④

The 2 left-most LEDs alternately flash,indicating “empty”(80%depth of discharge).

①

Batteries’ indicator malfunction

⑴Keyswitch on and no display

Terminals not connected or improper voltage; key switch not high.

⑵Stays at full

Indicator voltage does not match battery voltage.

⑶Will not reset

Indicator does not match battery voltage or battery not fully charged

⑷Reset without terminals charging battery

Not connected directly to battery

⑸Empty too soon

Indicator voltage does not match battery voltage or terminals not connected directly to battery

Using environmental temperature

Operating:-40~85℃; Storage:-50~+90℃

Humidity “95%RH non-condensing” at 38℃; Shock and Vibration : Meets SAE J 1378

①

HEAD LIGHTS

29

0

Headlight bulbs are halogen bulbs, the main light bulbs rated power can range from 30-60W, turning bulbs are orange color bulbs, the DC-DC converter provide 12V working voltage, and the switch assembly control the headlights to turn on and turn off. When headlights are turned on the indicator LED on the speedometer will flash as the lights are turned on, Eg. when turn on the main light the indicator will be flashing as well .

Headlights maintenance and bulb changing

HEADLIGHTS RATED POWER SHOULD ALWAYS BE KEPT WITHIN 50W, OTHERWISE THE HIGHER POWER

BULBS WILL CREATE MASS HEAT OVER AND DAMAGE TO THE LIGHT ASSEMBLY.

THE CAP ON THE ON THE BACK OF THE HEADLIGHTS SHOULD ALWAYS STAY TIGHT TO KEEP OTHER OBEJCT

ENTER INTO THE HEADLIGHTS, THE HEAT EXHAUST TUBE ON THE BACK OF THE MAIN LIGHT SHOULD ALWAYS

KEPT VENTILATED.

WHEN CHANGING A BURNT OUT BULB ONE SHOULD WAIT UNTIL THE LIGHT BULBS ARE IN NORMAL

TEMPERATURE

IN CASE MAY CAUSE BURN INJURY, AFTER ONE CHANGED THE BAD BULBS ONE SHOULD BE SURE TO PUT BACK

THE DUST-PROOF\WATER-SEAL CAP BACK ON AND KEEP IT TIGHT

LED TAIL LIGHTS

The tail lights are LED lights, the brake lights are red LEDs, the turning lights are orange LEDs, LED light assembly have highly efficient, low energy consumption and high luminance properties. The LED light assembly has a diode to prevent the power polarity reverse, and resister to limit the LEDs working current. When turn on the front headlights the brake LED lights will be on in dim light, when step the brake the brake LEDs will be on in strong light. The back turning lights are connected to the front turning lights in parallel circuit.

②

LED tail lights maintenance and malfunctions

THE LED LIGHTS SHOULD ALWAYS STAY AWAY FROM WATER, THE WATER

MAY CAUSE SHORT CIRCUIT.

30

Malfunctions

0

⑴ Switch on but cannot light up

Check the plug see whether it is tight, check the input voltage with a multimeter. If all check ok then the LED light assembly has a circuit break please check the diode.

⑵Taillight flashing too fast

Change the flasher

⑵ The light too dark

The resistor is defective, or the voltage supply from the DC-DC converter too low

CONTACTOR - SOLENOID

Contactor - solenoid is to protect the circuitry safety, and control the power on and off. The current come out of the battery is extremely high, for safe operation the circuit put contactor on. The interior structure is basically a electronic magnet. When someone steps on the accelerator the circuit will provide enough current to make the contactor to click on .Then the current is allowed to enter into the controller. When someone releases the accelerator the power will be cut the contactor-solenoid off and will break the circuit disallowing current to controller.

Contactor-Solenoid maintenance and malfunctions

THE FASTENING NUTS ON THE CONTACTOR-SOLENOID SHOULD BE SOLID TIGHT LOOSE CONNECTION MAY

CAUSE ELECTRIC SPARKS AND CAUSE SEVERE DAMAGE.

Malfunctions

⑴ Contactor-Solenoid will not respond when stepping on the accelerator

Bad connection or wrong connection or the contactor is broken

⑵ Contactor-Solenoid keeps repeating on and off

Contactor-Solenoid is bad or poor good from controller to Contactor-solenoid.

⑶ Contactor-Solenoid keeps staying on when releasing the accelerator

Check the micro-switch in the accelerator box, see if it is in right position (check the accelerator chapter), if so then the contactor-Solenoid is bad internally.

HORN

Horn is powered by 12V voltage come out of DC-DC converter, controlled by switch assembly .

Horn maintenance and malfunctions

THE HORN SHOULD BE KEPT SURFACE CLEAN, DIRT OR OTHER OBJECT MAY AFFECT

THE VIBRATION OF THE HORN CAUSE THE SOUND TO CHANGE AND LOW SOUND. THE

HORN SHOULDN’T BE LOADED WITH HIGH VOLTAGE BECAUSE HIGH VOLTAGE WILL

EASY BREAK THE COIL IN THE HORN SAUSING DAMAGE.

31

Malfunctions

0

⑴ Push the horn switch and will not respond

Wrong or bad connection of horn, check the horn plugs, use a multimeter to check whether where is voltage loaded on horn when push the switch. If all is right. Then the horn is bad

⑵ Strange horn voice

Push the horn, change the contact position of the horn and frame. Clean the surface of the horn especially dirt on it .

⑶ Horn have sound on when push the switch but go off after

Crank the tightness of the horn, use a screwdriver to rotate the middle screw to change the tightness of the horn .

RELAY

Relay is as a electric switch in the circuit system, the relay is be placed in input side of the DC-DC convertor as electric switch to control the converter power supply, when vehicle power is turned on the relay will click on, when the power is turned off the relay will brake attach.

①

Relay malfunctions

⑴ Power switch is on, relay no respond .

Check the connection see whether it is good connection condition, if it is then the Relay is bad.

①

②

③

● ●

FUSES

For protect the electronic circuit, fuses are required. The vehicle circuitry’s property is low voltage and high current. In case of short circuit, over current working, fuses are placed in the circuit for secure the electronic components, in case default operation may cause unrepairable damages.

① Main fuse for 1243/1246 system.

② Main fuse for 1268 system.

③ DC converter Input protective fuse for 1243/1246 system.

④ DC converter Input protective fuse for 1268 system.

Relay malfunctions

④

When the vehicle have a break down, turn on the power and whole circuitry system has no respond, then the main fuse should be checked, when the power is on and vehicle can be operated, but all lights and horn cannot be switched on. Then the DC converter Input protective fuse should be checked.

To judge a broken main fuse one can judge by physical eye observation, one can tell from the revealed fuse in the middle of the fuse, if it is broken then the fuse will be broken in the middle physically. For other fuses one can use a multimeter to judge, the resistance of the fuses are zero, if it is broken means the inner connection be disconnected.

⑥

● ●

⑤

WHEN COMMIT THE FUSE CHANGING, THE POWER SHOULD

BE TURNED OFF.

BATTERIES

Ⅰ

.HDK vehicle batteries connection

32

0

①

Batteries loaded on HDK vehicles, according to different configurations, customers who purchase HDK vehicles can choose different batteries (figure② are the batteries available). The batteries are connected in series circuit pattern :

System Battery QTY(PCS) Single battery voltage(V)

36V

48V

6

6

6

8

48V 8 6

②

Batteries HDK vehicles can apply

Trojan flooded Trojan T875

Trojan T105 flooded

Discover

AGM

Discover AGM

80-150AH

Us 2000 flooded

US2200 flooded

Us 250hc flooded

US battery flooded

Trojan 30XHS

Trojan J305

Generic 200-255 Ah flooded

Trojan 1275

Trojan T605

12TB-115AGM

6TB-170AGM

Generic 140-200Ah

AGM

Generic 200-250 Ah

AGM

Generic 250-335 Ah

AGM

Generic 140-200Ah flooded

Generic 250-335Ah flooded

Generic flooded

400Ah

Battery malfunction and maintenance

Ⅱ.Maintenance

ⅰ.the exterior of the battery, the connection wires and bolts should be kept clean and dry. If there is electrolyte outside the battery, please clean with dry cotton cloth first then wash with water and finally wipe dry. (while cleaning, do not allow any cleaning solution, or water to get inside the battery, to avoid leakage and increasing self-discharge) ⅱ. The connection of the battery should always be kept in good condition. please check if any battery cable terminal or nut has become loose periodically in order to prevent any sparkle or damage to terminals .

ⅲ.Do not place any object on the battery and do not connect the positive pole to the negative pole. This may cause a short circuit, damage to the battery or injury to your body.

ⅳ.The battery should be recharged fully when not in use. Any delay on the re-charging will cause negative effect on the battery.

ⅴThe evaporation and electrolyzing of the water will cause the density of electrolyte of the battery increased and the liquid surface decrease, especially in hot water. Therefore check the distilled water or the attenuated sulfuric acid for lead-acid battery with density of 1.40 to adjust the electrolyte to meet the density of the 1.28 the surface should be flat with highest level then continue to charge0.5-1 hour in order to make the internal uniform.

ⅵ.Any impurities are not allowed to enter the battery. Keep the apparatus clean for adding water to avoid the impurities to be fallen into the battery.

ⅶ.When driving, the driver shall be always be aware of the drop level the battery power from the batteries capacity indicator. The driver shall estimate the distance needed to be taken and recharge the battery at a proper time in case that the car can not get back to the recharging station in time for recharging.

ⅷ. If the golf car is going to be kept unused for a period of time, the battery shall be fully charged before put away. After that the battery fully recharged every month, until the charger turn off automatically.

ⅸ.During charging the car shall be parked in a well-ventilated area with the fill caps open. Keep car far away from any frame and sparks and avoid any explosion or fire that could cause physical injury or damage to the property.

x. Once charged the cap should be kept tightly covered.

Ⅱ.malfunctions and solutions

● ●

③

Y

Y

Y

Y

ELECTRICAL CIRCUITRY

MALFUNCTIONS AND SOLUTIONS

34

0

N

N

N

N

35

VEHICLES’ TIRE TREAD

①

0

For different circumstances the vehicle being used, different tire treads are optional ,the standard tires HDK vehicles have are turf tires.

FIGURE ① STANDARD TREAD

FIGURE ② PREMIUM TREAD

②

FIGURE ③ EXTRA TRACTION

③

FOR ATTACHING THE MAXIUM PEFORMANCE THE TIRES SHOULD ALWAYS

BE CHOOSEN ACCORDING TO THE CIRCUSTANCES THE VEHICLE MOSTLY BEEN

USED.

① Front hub

② brake drum

③ Dust cover

④

Dust cover seal

⑤

Tire

⑥ wheel fasten nut

While fasten the wheel nuts, one should always keep fasten it on in cross-sequence. To attach the perfect tight situation.

Tubeless tire cautions

①

④

③

CROSS-SEQUENCE

②

1. Clean both tire beads to remove dirt or other object.

2. Where the tire beads seat, clean the wheel rim with a wire brush

3. Apply plenty of tire mounting lubricant(soap and solution)to both beads and rim flanges

4. Install the tire on the rim from the valve stem side .if thre is no tire machine available ,use a rubber mallet and tire iron

5. Remove the valve core and position tire so that both beads are on the rim flange narrow bead seats

6. Quickly remove the air nozzle and install the valve core

7. Adjust the tire ,keep the air pressure between

3.5-4.0MP,immerse the tire into water to make sure there are no leaks

WARRANTY

The warranty is to standardize the after-sale service for export vehicles, Settle the claims efficiently and improve our after-sale service

Experience.

HDK Electric Vehicle Corporation is dedicate in the electric vehicle manufacturing since 2006, HDK customers are all over the world, HDK

Electric Vehicle Corporation promises any client who buys HDK vehicles, HDK technician’s will be always be ready to help fix the problems with you. We provide superior quality for after sales service.

For more warranty information please see limited warranty form that customers receive when purchasing HDK vehicles.

Appendix

Ⅰ

Ⅱ

Ⅲ

www.hdkusa.com