Hyster F118 (R30XMF) Forklift Service Repair Manual

SERVICE REPAIR R30XM R30XMA R30XMF [F118]

1600 SRM 691

Description

General This section contains procedures for adjustment, repair, and troubleshooting of the Electric Power Steering (EPS III) System and Advanced Power Steering (APS) System. The systems control the steer motor used to turn the master drive unit. The lift truck steering is controlled by turning the master drive unit.

EPS III EPS III is only applicable to the B174, E118, F118, and C174 trucks. There are three types of EPS III systems available: the standard system, called the Return-to-Center (RTC) Steering System, the optional Tach Generator Steering (TGS) System, and the optional Wire Guidance Steering System.

This section pertains to the RTC and TGS Systems only.

NOTE: This manual is NOT applicable to lift trucks with the optional Wire Guidance Steering System.

See the section Wire Guidance - Description 2200 SRM 421 for checks and adjustments and the section Wire Guidance - Repair 2200 SRM 422 for repairs to the steering system of trucks equipped with the Wire Guidance Steering System.

APS APS is only applicable to the G118 and D174 trucks.

There are two steering input devices used with the APS: the standard system, called the Multiturn Steering (MTS) System and the optional Return-to-Center (RTC) System.

Description EPS III The EPS System is comprised of the following components: • Steering handle (RTC System) or steering wheel (TGS System) • Command potentiometer (RTC System) or the tach generator (TGS System) • Feedback potentiometer • Steer system wire harness • Electronic Control Module (ECM) • Lift truck battery • Steer motor • Steering sprocket and chain

WARNING The Master Drive Unit (MDU) will automatically center when the key is ON. Keep hands, arms, and other appendages and tools clear.

The RTC System has a steering handle that returns to the center position when released. The handle moves 100 degrees each side of center for the full range of steering control. The TGS System has a steering wheel coupled to a belt-driven tach generator. The steering wheel does NOT automatically return to the center position.

The steering handle and command potentiometer for the RTC System are located in the operator’s compartment. Similarly, the steering wheel and tach

generator for the TGS system are located in the operator’s compartment. The ECM and steer motor are in the motor compartment beside the master drive unit. The feedback potentiometer is connected to the steer motor below the steer sprocket. The steering chain connects the steer sprocket at the gear motor to the sprocket of the master drive unit. The ECM is also located in the steer motor compartment.

The command potentiometer attached to the steering handle provides a signal to the ECM corresponding to the operator input. Similarly, the tach generator coupled to the steering wheel on the optional TGS system provides a signal to the ECM corresponding to the operator input. The ECM processes the signal to determine the steer angle selected by the operator.

The feedback potentiometer is connected to the steer motor. The feedback potentiometer provides a signal to the ECM that corresponds to the position of the master drive unit.

The signal from the command potentiometer (or tach generator) and the signal from the feedback potentiometer are sent simultaneously to the ECM. If the master drive unit is not at the operator-selected angle, the ECM provides electrical output to the steer motor.

The steer motor is coupled to the master drive unit with a sprocket and chain. The electrical output to the steer motor causes the motor to rotate the

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Checks and Adjustments

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sprocket and chain and turn the master drive unit.

As the master drive unit approaches the selected angle, the signal from the feedback potentiometer changes to instruct the ECM to slow and then stop the rotation of the steer motor.

APS SYSTEM The APS System is comprised of the following components: • APS controller • Steering handle (RTC) or steering wheel (MTS) mechanisms • Steering encoder for both systems • Steering proximity switch (RTC only) • MDU centering proximity switch (MTS and RTC) • Steer motor with built-in position encoder • Steering sprocket and chain or gear The MTS System has a steering wheel that does NOT automatically return to the center position. It has no stops.

The RTC System has a steering handle that returns to the center position when released. The handle moves 100 degrees each side of center for the full range of steering control.

The steering wheel and encoder for the MTS System are located in the operator’s compartment. The steering handle, steering proximity switch, and steering encoder for the RTC System are located in

the operator’s compartment. The APS controller, steer motor, and the MDU centering proximity switch are in the motor compartment beside the master drive unit.

The steering encoder is attached to the steering wheel, which provides a signal to the Master Control Unit (MCU) corresponding to the operator input.

Similarly, the steering handle on the optional RTC system provides a signal to the MCU corresponding to the operator input. The MCU processes the signal to the steer angle selected by the operator, and steering commands are sent to the APS controller via the CAN bus communication wires.

If the MDU is not at the operator-selected angle, the APS provides electrical output to the steer motor.

The steer motor is coupled to the master drive unit with a sprocket and chain or a gear. The steering chain connects the steer sprocket at the gear motor to the sprocket of the master drive unit. The electrical output to the steer motor causes the motor to rotate the sprocket and chain or pinion gear and turn the master drive unit. On lift trucks that have gear steering, the pinion gear on the steering actuator directly drives the ring gear on the master drive unit.

As the master drive unit approaches the selected angle, the signal from the steering encoder changes to instruct the APS controller to slow and then stop the rotation of the steer motor.

Checks and Adjustments GENERAL WARNING Do not operate a lift truck that needs adjustments or repairs. Report the need for adjustments or repairs immediately. If adjustment or repair is necessary, put a DO NOT OPERATE tag in the operator’s area. Remove the key from the key switch.

WARNING Some of the checks and adjustments are done with the battery connected. Never have any metal on your fingers, arms, or neck. During some checks or adjustments, the operator must move the lift truck. The person doing the adjustments must make the adjustments with the system energized. Make sure the operator does

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not move the lift truck and cause a personal injury.

Do not make adjustments to a properly operating steer system.

CHECKS, EPS III Three test points are provided for adjustment of the ECM. TP1 is the feedback potentiometer input adjusted by P2. TP2 is the command potentiometer input adjusted by P1. TP3 is the analog and logic common. Light-Emitting Diodes (LEDs) 1 through 5, located on the ECM circuit board, are used to indicate steer system faults.

Dipswitches, EPS III NOTE: The dipswitches are factory-set and should not need to be adjusted.

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Checks and Adjustments

If the ECM is replaced, or the settings of the dipswitches are inadvertently changed, refer to Figure 1 to set the position of the dipswitches to the factory settings.

On trucks equipped with the optional TGS System, an adjustment can be made to the settings of dipswitches 5, 6, and 7 to alter the sensitivity of the tach generator input scaling, if desired. Refer to Tach Generator Steering System, EPS III, Sensitivity Adjustment, EPS III in the Adjustments section following.

Table 1. LED Indicators (Continued) LED 4 off, LED 5 on

Error in controller or motor circuit

LED 4 on, LED 5 on

Error in controller

LED 4 off, LED 5 off, and LED 1 on (with no sound from motor)

Supply contactor fault or voltage on emergency brake coil (the controller must remain off for a minimum of 2 seconds before a new startup to avoid an error condition)

Check Steering System for Correct Operation, EPS III The ECM check includes checks for the command potentiometer and the feedback potentiometer.

1. Open the motor compartment door. Move the key switch to the ON position and push the foot switch. Make sure the battery has a corrected specific gravity of at least 1.250.

A. SET SWITCH 8 FOR RTC STEER B. SET SWITCH 8 FOR TACH STEER Figure 1. Dipswitches - Factory Setting

LED Indicators, EPS III The ECM continuously monitors the steering system.

Problems detected by the ECM are indicated by 5 LEDs. Refer to Figure 2 and Table 1. The vehicles equipped with electric steering systems are designed to stop automatically when a fault occurs. The brake relay, located in the ECM, applies the brake to stop the vehicle if a fault condition is detected.

Table 1. LED Indicators LED 1 on (green) (with motor clicking sound)

Controller active

LED 2 on (red)

Left limit reached

LED 3 on (red)

Right limit reached

LED 4 on, LED 5 off

Error in sensor circuit

2. Check the system for correct operation, move the steering handle or steering wheel from a full left turn position to a full right turn position. The master drive unit should move 85 to 95 degrees in each direction from straight travel.

3. If the master drive unit moves less than 90 degrees (±5 degrees ) in either direction, the steering is incorrectly adjusted or may have a mechanical problem. Refer to Adjustments.

4. Check that the master drive unit moves through the full range of rotation in 5 seconds or less. The lift truck must be on smooth concrete with a fully charged battery and no load.

5. If the master drive unit requires greater than 5 seconds to move through the full range of rotation, check for a mechanical problem or defective ECM.

Check Slow Travel Speed, EPS III NOTE: The slow travel speed is checked during the adjustment procedure. Refer to Adjustments.

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Checks and Adjustments

1. DIPSWITCHES 2. LEDS

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3. TEST POINTS 4. POTENTIOMETERS Figure 2. Electronic Control Module (ECM) - EPS III

Check High Lift Traction Shutoff, EPS III

LED Indicators, APS

1. Instruct the operator to raise the platform above 3810 mm (150 in.).

Their are no LED indicators on the APS System.

2. The traction system should NOT operate with the operator platform above 3810 mm (150 in.) unless the truck is equipped with the high lift travel-enable option. Note that the standard travel cut-out for the E/F118 is 5384.8 mm (212 in.). If the unit is so equipped, check that the traction system operates normally EXCEPT when the steering is set for 10 degrees or more from center and the operator platform is above 3810 mm (150 in.). If the steering is set for more than 10 degrees and the operator platform is above 3810 mm (150 in.), the traction system should NOT operate.

CHECKS, APS There are no adjustments for the 1243 Controller Module for APS System.

Dipswitches, APS Their are no dipswitches on the APS System.

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ADJUSTMENTS General NOTE: This manual is NOT applicable to lift trucks with the optional Wire Guidance Steering System.

See Wire Guidance - Description EPS III 2200 SRM 421 or Wire Guidance - Description APS 2200 SRM 957 for checks and adjustments to the Wire Guidance Steering System.

NOTE: Do not make adjustments to a properly operating steering system. The following adjustments must be done in the order specified. Do not move the steering wheel or handle after it has been accurately centered unless instructed to move it in the following procedures.

NOTE: The steer motor has no internal serviceable parts. Do not disassemble the steer motor.

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Checks and Adjustments

NOTE: The steer motor gearbox does not have any serviceable parts, nor does the gearbox oil need to be checked, refilled, or replaced.

3. Install steer motor onto the frame by aligning the teeth of the pinion gear with the teeth of the steering gear and installing the three bolts.

Make sure the battery has a corrected specific gravity of at least 1.250. Move the lift truck to an open area where it can be driven in a straight line for a distance of at least 9 m (30 ft).

NOTE: There are no adjustments between the steering gear motor and the steering gear.

Steer Motor With Steering Chain Replacement, EPS III Refer to Figure 5 and Figure 6 for the following instructions.

4. Torque the three bolts holding the steer motor assembly to the frame to 23 N•m (17 lbf ft). Lubricate the pinion gear and ring gears using multipurpose grease.

Return-to-Center Steering System Command Potentiometer Adjustment, EPS III

1. Turn key switch OFF, disconnect battery, and open the motor compartment door.

WARNING

2. Hold the steer motor assembly and remove the capscrews, nuts, and washers that fasten the motor assembly to the frame.

The MDU will automatically center when key is ON. Keep hands, arms, and other appendages and tools clear.

3. Carefully tip the top of the assembly away from the panel to remove the motor from the truck.

Remove the steering chain from the sprocket.

The Return-to-Center (RTC) command potentiometer is located at the steering mechanism in the instrument panel. Refer to Figure 3 and Figure 4. Remove the screws at the top of the instrument panel.

Tilt the panel to the open (down) position for access to the potentiometer.

4. Remove the steering chain from the master drive unit sprocket as required by pulling the chain anchor pins out of the holes in the sprocket.

Clean and lubricate the chain using multipurpose grease.

5. Make sure the master drive unit is aligned for straight travel. Install the steering chain on the master drive unit sprocket. Install the pin of the chain anchor in the first hole before the axle centerline.

6. Install the new motor and sprocket assembly.

Tighten the capscrews and nuts to 31 N•m (23 lbf ft).

Steer Motor With Steering Gear Replacement, APS Refer to Figure 7 for the following instructions.

1. Turn key switch OFF, disconnect battery, and open the motor compartment door.

2. Remove the three bolts holding the steer motor assembly to the frame and lift out the steer motor and pinion gear.

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2.

3.

4.

5.

RTC STEERING HANDLE INSTRUMENT PANEL COMMAND POTENTIOMETER RETAINING NUT COWL CAPSCREWS Figure 3. Return-to-Center (RTC) Steering, EPS III

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Checks and Adjustments

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2.

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4.

5.

6.

7.

LOCKWASHER NUT CAPSCREW CAPSCREW SETSCREW NUT BUSHING

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8.

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BELLEVILLE WASHER SPRING - TORSION ENCODER BRACKET - ENCODER GROMMET - RUBBER PLATE WELDMENT SHAFT

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19.

20.

WASHER PROXIMITY SWITCH STANDOFF CAPSCREW HANDLE SCREW

Figure 4. Return-to-Center (RTC) Steering, APS (Exploded View) 1. Set the key switch in the OFF position.

2. Unplug the connector from the command potentiometer. Refer to Figure 3.

3. Use an ohmmeter to measure the resistance between wires 19 (black) and 20 (green). Measure the resistance between wires 20 (green) and 21 (white).

4. Adjust the command potentiometer until the resistance values measured in Step 3 are equal (+50 ohms). Adjust the potentiometer by loosening the retaining nut and moving the potentiometer body to attain the desired resistance readings. Tighten the retaining nut without moving the potentiometer body.

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5. Attach the plug removed in Step 2 to the command potentiometer.

6. Set the key switch to the ON position.

7. Measure the voltage across TP3 and TP2 on the ECM circuit board by inserting the negative probe into TP3 and the positive probe in TP2.

Refer to Figure 2. Adjust potentiometer P1 on the ECM circuit board to a value of 0 VDC (+ 0.05 VDC).

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1600 SRM 691

Checks and Adjustments

Feedback Potentiometer Adjustment (Earlier Models Only)

CAUTION Make sure the RTC command potentiometer is properly adjusted before adjusting the feedback potentiometer.

1. Center the drive tire and steer handle for straight travel. After the drive tire and handle are centered, do not adjust the steer handle again until specifically instructed to do so in this procedure.

2. Refer to Figure 5 and Figure 6 to identify the feedback potentiometer. Unplug the connector from the feedback potentiometer.

3. Measure the resistance between wires 16 and 17.

Measure the resistance between wires 17 and 18.

4. Adjust the feedback potentiometer until the resistance values measured in Step 3 are equal (+50 ohms). Adjust the potentiometer by loosening the retaining nut and moving the potentiometer body to attain the desired resistance readings. Tighten the retaining nut without moving the potentiometer body.

5. Attach the plug removed in Step 2 to the feedback potentiometer.

6. Set the key switch to the ON position.

NOTE: If there are no steering changes within a 10-second period, the ECM removes power to the steer motor. To restore power to the steer motor, step on the foot switch.

7. Measure the voltage across TP3 and TP1 on the ECM circuit board by inserting the negative probe into TP3 and the positive probe into TP1.

Refer to Figure 2. Ensure that the ECM has not removed power to the steer motor. Adjust potentiometer P2 on the ECM circuit board to a value of 0 VDC (+ 0.05 VDC).

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2.

3.

4.

5.

6.

MOTOR MOTOR MOUNTING BRACKET CHAIN SPROCKET POTENTIOMETER MOUNTING BRACKET FEEDBACK POTENTIOMETER

Figure 5. Motor Mounting Assembly (EPS III)

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Checks and Adjustments

Figure 6. Motor Mounting Assembly (D174 and G118 Only) - APS

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1600 SRM 691

1600 SRM 691

Checks and Adjustments Legend for Figure 6

1. STEERING ACTUATOR 2. MOTOR 3. COUPLING, MOTOR/GEARBOX 4. GEARBOX 5. CAPSCREW 6. OUTPUT SHAFT KEY 7. CAPSCREW 8. LOCKWASHER

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CAPSCREW BRACKET - STEER MOTOR SPROCKET FLAT WASHER CAPSCREW CHAIN - ROLLER STEERING CONTROLLER (APS) 16. CAPSCREW

17. FLAT WASHER 18. STEERING CONTROLLER, WIRE GUIDANCE 19. NUT 20. CAPSCREW 21. LOCKWASHER 22. FLAT WASHER

Figure 7. Motor Mounting - Gear Steering

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Checks and Adjustments

1600 SRM 691 Legend for Figure 7

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2.

3.

4.

5.

6.

7.

8.

9.

MASTER DRIVE UNIT TRACTION MOTOR BRAKE CAPSCREW LOCKWASHER CAPSCREW LOCKWASHER STOP BOLT LOCKWASHER

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PROXIMITY SENSOR PLATE PROXIMITY TARGET LOCKWASHER CAPSCREW CAPSCREW WASHER STEERING ACTUATOR STEERING MOTOR COUPLING

WARNING During the following check, the operator must move the lift truck. Use caution to avoid a personal injury.

8. Operate the lift truck in a straight line for at least 9 m (30 ft) without touching the steer handle. Adjust potentiometer P2 again as necessary to ensure the lift truck travels in a straight line within 152 mm (6 in.) in 9 m (30 ft).

9. To verify that the lift truck is traveling in a straight line, install a pointer at the center of the front (master drive unit end) of the lift truck.

Make a mark on the floor under the point of the pointer.

10. Operate the lift truck straight forward 5 m (16 ft).

Make a mark on the floor under the point of the pointer.

11. Operate the lift truck straight forward 5 m (16 ft) more. Make another mark on the floor under the point of the pointer.

12. Draw a straight line between the first and last marks. The center mark must be within 76 mm (3 in.) of the line. If the center mark is within this specification, P2 is correctly adjusted. If the mark is NOT within the specification, adjust P2 until the trial is successful.

Tach Generator Steering System, EPS III Tach Generator Adjustment, EPS III

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20.

21.

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25.

26.

27.

GEARBOX KEY CAPSCREW CAPSCREW LOCKWASHER WASHER LOCTITE WASHER WASHER

Sensitivity Adjustment, EPS III

WARNING Changing the sensitivity setting of the TGS System alters the amount of operator effort required to steer the truck. Notify all affected operators that the truck may steer differently before operation. Use caution to avoid a personal injury.

The sensitivity of the TGS System is adjusted by changing the position of dipswitches 5, 6, and 7. Do not change any other dipswitches. Refer to Table 2.

Table 2. Sensitivity Adjustment Switches 5, 6, and 7 closed

Maximum Sensitivity

Switches 6 and 7 closed, switch 5 open Switches 5 and 7 closed, switch 6 open Switch 7 closed, switches 5 and 6 open

(Factory Setting)

Switches 5 and 6 closed, switch 7 open Switch 6 closed, switches 5 and 7 open Switch 5 closed, switches 6 and 7 open Switches 5, 6, and 7 open

Minimum Sensitivity

The tach generator is located at the steering mechanism in the instrument panel. Remove the screws at the top of the instrument panel. Tilt the panel to the open (down) position for access to the tach generator.

Feedback Potentiometer Adjustment, EPS III

The tach generator does not require adjustment.

Check the drive belt for proper alignment and verify that the belt is not excessively worn. Replace as required.

2. Refer to Figure 5 to identify the feedback potentiometer. Unplug the connector from the feedback potentiometer.

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1. Center the drive tire for straight travel.

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Checks and Adjustments

3. Measure the resistance between wires 16 and 17.

Measure the resistance between wires 17 and 18.

4. Adjust the feedback potentiometer until the resistance values measured in Step 3 are equal (+ 50 ohms). Adjust the potentiometer by loosening the retaining nut and moving the potentiometer body to attain the desired resistance readings. Tighten the retaining nut without moving the potentiometer body.

5. Attach the plug removed in Step 2 to the feedback potentiometer.

6. Set the key switch to the ON position.

7. Measure the voltage across TP3 and TP1 on the ECM circuit board by inserting the negative probe into TP3 and the positive probe in TP1.

Refer to Figure 2. Adjust potentiometer P2 on the ECM circuit board to a value of 0 VDC (+0.05 VDC).

Slow Travel Adjustment, EPS III The lift truck is designed to be speed-limited above specific mast heights. Proceed as follows: 1. Make sure the battery has a corrected specific gravity of at least 1.250. Make sure that the lift truck has been operated at full speed for approximately 10 minutes before checking the speed.

2. Move the lift truck to an area that is smooth and level for a minimum of 30 m (100 ft). Refer to Figure 8. Put a line across the floor at 10 m (33 ft) and another line across the floor at 20 m (66 ft) to divide the area in three equal sections. The first 10 m (33 ft) section is used for acceleration, the middle section for the speed measurement, and the last section for deceleration.

3. Raise the operator platform slightly over 610 mm (24 in.).

WARNING WARNING During the following check, the operator must move the lift truck. Use caution to avoid injury.

8. Operate the lift truck in a straight line for at least 9 m (30 ft), making corrections with the steering wheel as necessary to keep the truck traveling in a straight line. At the end of the 9 m (30 ft), do not touch the steering wheel. Adjust potentiometer P2 again as described in Step 7.

9. Repeat this procedure a minimum of three times to ensure accurate potentiometer adjustment.

1. 30 m (100 ft) TEST AREA 2. 10 m (33 ft) LINE

During the following check, the operator must move the lift truck. Be sure all personnel are clear of the testing area. Use caution to avoid injury.

4. Position an assistant to the side at the 10 m (33 ft) line and another assistant to the side at the 20 m (66 ft) line. Operate the lift truck at full speed through the test area to determine the elapsed time between the 10 m (33 ft) line and the 20 m (66 ft) line. The lift truck must travel at full speed through the entire length of the middle 10 m (33 ft) section to obtain accurate data.

3. 20 m (66 ft) LINE 4. SPEED MEASUREMENT AREA Figure 8. Slow Travel Adjustment Speed Test

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Checks and Adjustments 5. If the measured elapsed time is less than 10 seconds, adjust potentiometer P3 on the ECM circuit board counterclockwise to slow the truck speed to 3.5 +0.3 km/h (2.2 +0.2 mph).

6. If the measured elapsed time is more than 10 seconds, adjust potentiometer P3 on the ECM circuit board clockwise to increase the truck speed to 3.5 +0.3 km/h (2.2 +0.2 mph).

Return-to-Center and Multiturn System, APS Encoder Replacement, APS 1. Disconnect the battery connector.

2. Remove the screw that fastens the steering handle to the shaft of the steering mechanism. Remove the steering handle (RTC only).

3. Remove the screws at the top of the instrument panel cover to gain access to the instrument panel.

4. Remove the capscrews that fasten the steering mechanism bracket to the back of the instrument panel.

5. Remove the setscrew that fastens the shaft of the encoder to the steering shaft. Remove the capscrew and nut that fasten the bracket for the encoder. Remove the bracket and encoder. Remove the encoder from the bracket. Label the encoder connector for correct connections during installation.

6. Install the new encoder, as required. Connect the connector of the encoder.

7. Install the steering mechanism bracket to the back of the instrument panel.

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1600 SRM 691 8. Connect the battery connector.

9. Connect all wires disconnected during removal.

10. Tighten the two setscrews that fasten the encoder to the steering shaft. One of the setscrews should be aligned with the flat area on the encoder shaft.

11. Close the instrument panel and tighten the screws. Install the steering handle on the shaft of the steering mechanism and tighten the screw.

Steering Chain Adjustment, EPS III 1. Disconnect the battery connector. Open the motor compartment doors.

2. Position a straight edge (e.g., a thin piece of rigid material) against the steering chain between the sprockets. Make sure the chain is tight on the opposite side of the sprockets.

3. Push on the chain at a point approximately halfway between the sprockets with a force of 9 to 12 kg (20 to 26 lb). Measure the clearance between the straight edge and the chain. The clearance should not exceed 3.3 mm (0.13 in.).

Refer to Figure 9.

4. Tighten the adjustment nut at the master drive unit sprocket to obtain a maximum clearance of 3.3 mm (0.13 in.) between the chain and straight edge. Do NOT tighten the chain to a clearance of less than 1.3 mm (0.05 in.).

5. Close and fasten the motor compartment doors.

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Repairs

1. MOTOR SPROCKET 2. MDU 3. STEERING CHAIN

4. STRAIGHT EDGE 5. ADJUSTING BOLT 6. ADJUSTING NUT Figure 9. Steer Chain Adjustment

Repairs RTC STEERING SYSTEM, EPS III Command Potentiometer Replacement, EPS III WARNING The MDU will automatically center when key is ON. Keep hands, arms, and other appendages and tools clear.

1. Disconnect the battery connector.

2. Remove the screw that fastens the steering handle to the shaft of the steering mechanism. Remove the steering handle.

3. Remove the screws at the top of the instrument panel. Tilt the instrument panel to the open position for access.

4. Remove the capscrews that fasten the steering mechanism bracket to the back of the instrument panel.

5. Remove the setscrew that fastens the shaft of the command potentiometer to the steering shaft. Remove the capscrew and nut that fasten the bracket for the command potentiometer.

Remove the bracket and potentiometer. Remove the potentiometer from the bracket. Label the potentiometer wires for correct connections during installation.

6. Install the new command potentiometer as required. Connect the wires of the command potentiometer.

7. Install the steering mechanism bracket to the back of the instrument panel.

8. Connect all wires disconnected during removal.

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