Steering - Squeak From Steering Gear
No.: LTB00112Issue: 1
Date: 16 April 2008
THIS BULLETIN REPLACES 57/01/05NAS DATED 26 JUNE 2006. THE CHANGES ARE NOT HIGHLIGHTED.
SECTION: 211
Squeak from Steering Column / Steering Gear Pinion Seal Squeak - Repair Procedure
AFFECTED VEHICLE RANGE
CONDITION SUMMARY:
Situation:
A customer may complain of a 'squeak' noise from the steering column area when turning the steering wheel. This condition may be caused by a lack of lubrication of the power steering pinion seal.
NOTE:
A similar squeak can be traced to the steering column bushing and grommet. Refer to TIB 57/02/03NAS for information on the lubrication of the grommet to eliminate this noise source.
Action:
In the event of a customer concern of the above, follow the Repair Procedure outlined below to add the specified power assist steering (PAS) fluid and additive to the PAS system.
PARTS
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.
REPAIR PROCEDURE
DRAIN PAS SYSTEM
1. Remove PAS fluid reservoir cap.
WARNING:
Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.
NOTE:
Global Technical Reference (GTR) lookup sequence is as follows:
GTR Home > NAS > LM - New Range Rover > Service Information > Model Year > Workshop Manual > 5: Body and Paint > 501-02: Front End Body Panels.
2. Refer to Workshop Manual (GTR) section 501-02 Radiator Splash Shield (76.11.81) to remove the front undertray.
3. Disconnect the PAS fluid line from the fluid cooler. (Figure 1)
4. Drain the fluid into a suitable container.
5. Cap the inlet side of the fluid cooler with a suitable plug. (Figure 1)
6. Raise and support the vehicle.
CAUTION:
Do not start the engine as damage to the power steering system may occur.
7. Turn the steering wheel from lock-to-lock 10 times, allowing the fluid to drain into a suitable container.
FLUSH THE PAS SYSTEM.
NOTE:
The flush process will require approximately 0.75 liter (1.6 pints) of PAS fluid (LR003401) to complete.
1. Fill the PAS reservoir with new fluid (LR003401).
2. Turn the steering wheel from lock-to-lock 10 times, allowing the fluid to drain into a suitable container.
3. Remove the cap from the fluid cooler.
4. Install the PAS fluid line to the cooler.
5. Refer to Workshop Manual (GTR) section 501-02 Radiator Splash Shield (76.11.81) to install the front undertray.
FILL AND BLEED PAS SYSTEM
NOTE:
The Lubrizol additive must only be added once.
1. Add the 50 ml Lubrizol additive to the power steering fluid reservoir.
NOTE:
Global Technical Reference (GTR) lookup sequence is as follows:
GTR Home > NAS > LS - Range Rover Sport > Service Information > Model Year > Workshop Manual > 2: Chassis > 211: Steering System > 211-00: Steering System - General Information > General Procedures > Power Steering Filling and Bleeding.
2. Refer to Workshop Manual (GTR) section 211-00 Steering System - General Information (Power Steering System Filling and Bleeding) to fill and bleed the PAS system.
3. Install the 'Pentosin CHF202' label to a visible location on the PAS reservoir adjacent to Minimum / Maximum marks.
^ Ensure the area is thoroughly cleaned and degreased before applying the label.
^ The purpose of the label is to identify that Lubrizol and Pentosin CHF202 have been added to the PAS system and that if any repairs/maintenance are carried out in the future, only Pentosin CHF 202 should be used to fill the system.
HEAT THE STEERING FLUID TO 100°C +/- 5°C (212°F +/- 10°F)
1. Insert a suitable temperature probe into the fluid reservoir.
NOTE:
The steering maneuver should be carried out on a hard, flat surface outside of the workshop, with the suspension set to standard on-road height.
2. Start the engine.
3. With the vehicle stationary and the steering wheel in the center position (road wheels straight ahead) turn the steering wheel 90° (quarter turn) right and hold firmly with both hands.
^ Raise the engine speed to 2,000 rpm.
^ Monitor the temperature until 100 +/- 5°C (212°F +/- 10°F) is reached.
PERFORMING THE STEERING MANEUVER
NOTE:
SSM 36689 contains a video showing the repair outlined in this section to aid in understanding the procedure.
CAUTION:
Do not hold steering at full lock for longer than two seconds with the power steering fluid temperature at 100 +/- 5°C (212°F +/- 10°F), as this may cause damage.
1. Verify the power steering fluid temperature is at 100 +/- 5°C (212°F +/- 10°F), engine idle speed set between minimum 900 rpm and maximum 1,000 rpm.
2. Turn the steering wheel to full lock and hold for two seconds.
3. From full lock turn the steering wheel quickly and rapidly back 90° (quarter turn). (Refer to SSM 36689 showing this procedure)
4. Repeat steps 2 and 3 eight times.
5. Turn the steering wheel to the opposite full lock, and repeat steps 2 and 3.
6. Remove the temperature reading equipment from the PAS fluid reservoir.
7. Install the PAS fluid reservoir cap.
8. Road test the vehicle and check for a squeaking noise from the PAS system.
NOTE:
If the vehicle continues to exhibit a squeak after the road test, carry out the 'Heating the steering fluid to 100 +/- 5°C' (212°F +/- 10°F) (Steps 1 - 3) and 'Performing the Steering Maneuver' (Steps 2 - 5) a maximum of two additional times. If further problems occur, contact the Land Rover Technical HelpLine for further information.