Steering - Steering Column Rub/Scrape Noises

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) Technical Service Bulletin # 321708 Date: 100201

Steering - Steering Column Rub/Scrape Noises

SI B 32 17 08

Steering and Wheel Alignment

February 2010

Technical Service

This Service Information bulletin supersedes SI B32 17 08 dated December 2008.

[NEW] designates changes to this revision

SUBJECT

Rubbing and/or Scraping Noise from the Steering Column

MODEL

E46 (3 Series)

E53 (X5)

E60 (5 Series)

E61 (5 Series)

E63, E64 (6 Series)

E65, E66 (7 Series)

E70 (X5)

E71 (X6)

E82, E88 (1 Series)

E83 (X3)

E85, E86 (Z4)

E90, E91, E92, E93 (3 Series)

SITUATION

The customer may report a rubbing or scraping noise, which occurs when turning the steering wheel from left to right. While there are a number of

components which can cause this type of noise, this bulletin is specifically related to those noises which occur directly at the steering shaft.

CAUSE

This type of noise can be caused by the following:

^ Contact between the pinion shaft dust cover and the steering gear

^ Insufficient lubrication of the bulkhead seal for the steering shaft

CORRECTION

Isolate the source of the noise, using a stethoscope or other suitable listening device. If the noise is coming from the steering shaft, then the pinion

shaft duct cover should be checked, and the steering shaft seal should be lubricated.

PROCEDURE

Locate the source of the noise, using a stethoscope or other listening device. If the noise is coming from the steering shaft area, proceed as follows:

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) 289

1. Using a pry bar or other suitable tool, push up slightly on the pinion shaft dust cover (1) while someone turns the steering wheel. If the noise

changes or is eliminated, proceed to step 2. If the noise does not change, proceed to step 5.

2. Loosen the securing bolt (2) on the steering coupler.

3. Push the dust cap up to eliminate contact between the cap and the steering gear.

4. Refer to the Tightening Torque section of the Repair Manual for torque values and requirements for bolt replacement. Tighten the securing bolt

(2).

5. Lubricate the steering shaft slip ring (1) by spraying Wurthreg; Multi Lube 350 onto the steering shaft from the engine compartment side. Turn the

steering wheel from left to right to distribute the lubricant. Please note that it is not necessary to remove the steering shaft.

6. Remove the trim panel above the brake and accelerator pedals; refer to Repair Instruction RA 51 45 185 "Removing and installing/replacing trim

for pedal assembly".

7. Lubricate the steering shaft slip ring (1) by spraying Wurthreg; Multi Lube 350 onto the steering shaft from the passenger compartment side. Turn

the steering wheel from left to right to distribute the lubricant.

8. Refit the trim panel.

PARTS INFORMATION

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) 290