Steering - Tilt Mechanism Noisy During Operation
No: 211-004Issue: 1
Date: 20 Dec 06
SECTION: 211-04 - STEERING SYSTEM
Steering Column Tilt Mechanism Adjustment Noise
AFFECTED VEHICLE RANGE:
Range Rover (LM) VIN: All
CONDITION SUMMARY:
STEERING COLUMN TILT MECHANISM ADJUSTMENT NOISE DIAGNOSIS AND REPAIR
NOTE: Certain vehicles may be subject to Land Rover Service Action B028 "Steering Column Tilt Mechanism Upgrade". DDW and the latest issue of B028 should be reviewed for applicability prior to completing the Repair Procedure detailed in this bulletin.
NOTE: A steering column assembly should NOT be replaced for tilt mechanism 'noise' related issues.
Situation: A customer may report a concern that the steering column tilt adjustment mechanism is noisy during operation. A 'noise' may be described as either a squeak/squeal noise or a motor whirring/hum noise. Both noises are commonly caused by a lack of lubrication on the tilt spindle threads. This bulletin has been issued to provide information for correct diagnosis.
Two potential causes for a tilt mechanism noise are as follows:
* A lack of lubricant on the tilt spindle thread.
* An internal fault within the tilt motor.
Action: Should a customer express this concern, and the vehicle is not subject to Service Action B028, refer to the Repair Procedure detailed in this bulletin to resolve the noise concern.
PARTS:
QME500070...Kit-Steering column tilt motor Qty 1 (if required)
(kit includes replacement Allen screws)
QYL500010....Grease Qty 1 (if required)
(one tube contains enough for several applications)
WARRANTY:
NOTE: Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to DDW to obtain the latest repair time.
DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.
Normal warranty policy and procedures apply
REPAIR PROCEDURE
ASSESS TILT MECHANISM NOISE
1. Verify that the tilt mechanism noise is unacceptable.
2. Move the driver's seat fully rearwards for access.
3. Fully extend the steering column for access.
4. Release the steering column extension bellows from the steering column trim.
5. Remove the three Torx screws securing the steering column lower trim to the steering column. (Figure 1)
6. Release and remove the steering column lower trim.
7. Apply grease (QYL500010) to lubricate the tilt spindle threads, ensuring even distribution along entire spindle length. (Figure 2)
8. Operate the tilt mechanism through the entire range of travel several times.
9. Re-assess the tilt mechanism noise.
10. If the tilt mechanism noise has reduced to an acceptable level, proceed as follows to complete repair:
^ Install the steering column lower trim.
^ Install the steering column extension bellows.
^ Return the vehicle to customer.
11. If the tilt mechanism is still unacceptable, complete the INSTALL NEW TILT MOTOR section of this bulletin.
INSTALL NEW TILT MOTOR
CAUTION: After switching off the ignition, two minutes must elapse before disconnecting the battery. Failure to wait two minutes will damage the navigation computer.
1. Turn of the ignition and wait two minutes.
NOTE: Global Technical Reference (GTR) lookup sequence is as follows:
GTR Home > NAS > Service Information/ LM - New Range Rover > Workshop Manuals > Bookmark "General Information" Links "Electrical Precautions" or "Standard Workshop Practices"
2. Refer to GTR General Information, Electrical Precautions or Standard Workshop Practices and disconnect the battery ground cable.
3. Disconnect the multi-plug connector from the steering column tilt adjustment motor. (Arrowed in Figure 3)
4. Remove and discard two Allen screws securing the steering column tilt adjustment motor to the steering column. (Arrowed in Figure 4).
NOTE: The drive spindle (inset in Figure 4) can fall from its location when removing the tilt adjustment motor. Care should be taken to ensure that the drive spindle is not lost or damaged during this procedure.
5. Carefully remove the steering column tilt adjustment motor from the steering column tilt adjustment drive gear.
6. Install the original drive spindle into the new steering column tilt adjustment motor. (Arrowed in Figure 5).
NOTE: It may be necessary to adjust the column tilt adjustment drive gear ('A' in Figure 6) to align the drive spindle and the drive gear and achieve engagement of the steering column tilt adjustment motor.
7. Align the steering column tilt adjustment motor to the steering column tilt adjustment drive gear.
8. Install by hand the two new Allen screws to secure the steering column tilt adjustment motor.
9. Evenly and progressively tighten adjustment motor securing Allen screws to 5.5 Nm (4.1 lbf-ft).
10. If the steering column tilt adjustment drive gear nut ('A' in Figure 6) moves on the shaft while engaging the steering column tilt adjustment motor, torque the steering column tilt adjustment drive gear nut to 3 Nm (2.2 lbf-ft).
11. If a white paint mark is evident on the steering column tilt adjustment drive gear bearing housing ('B' in illustration 6), torque the steering column tilt adjustment drive gear nut to 3 Nm (2.2 lbf-ft).
12. Connect the multi-plug connector to the steering column tilt adjustment motor.
13. Install the steering column lower trim to the steering column and secure with screws.
14. Install the steering column extension bellows to the steering column.
15. Refer to GTR General Information, Electrical Precautions or
Standard Workshop Practices and connect the battery ground cable.
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