Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts.Technical Service Bulletin # LI46-20_P-052080 Date:
110707
Steering/Susp. - Cracking Noise When Steering Left Or Right
Cracking noises when steering left and right
Topic number LI46.20-P-052080
Version 1
Design group 46.20 Steering gear
2010 Mercedes Benz SL 550 (230.471) V8-5.5L (273.965) Page 21
Date 07-07-2011
Validity Model series 230, all
Reason for change Damage code revised (refer to Supersedes P-B-46.20/60b
Complaint:
Cracking noise when steering left or right just before limit stop. Cracking noticeable at steering wheel. The cracking iS also noticeable on the
steering gear when stationary (vehicle standing on its wheels)
Cause:
Preload lost due to settling or irregularities in the contact surfaces at the bolted connections of the diagonal struts (1) or the reinforcement plate (2)
on the front axle carrier
Remedy:
Important:
The steering gear is not the cause of the problem. Do not replace the steering gear!
1.) Remove lower engine compartment paneling (AR61.20-P-1105R)
2.) Unclip cover on diagonal struts at front
3.) Remove diagonal struts (1), check contact surfaces on the struts and on the front axle carrier and eliminate any irregularities if necessary.
4.) Remove reinforcement plate (2) from front axle carrier, check contact surfaces on the plate and on the front axle carrier and eliminate any
irregularities if necessary.
5.) Install reinforcement plate (2) on front axle carrier => specified torque of retaining bolts, reinforcement plate to front axle carrier, model 230:
12 Nm (BA62.30-P-1006-01A)
6.) Install diagonal struts (1) => specified torque of retaining bolts, diagonal strut to front axle carrier, model 230: 70 Nm (BA62.30-P-1004-01A)
7.) Clip on cover
8.) Install lower engine compartment paneling (AR61.20-P-1105R)
Symptoms
Parts
Attachments
WIS-References
110707
Steering/Susp. - Cracking Noise When Steering Left Or Right
Cracking noises when steering left and right
Topic number LI46.20-P-052080
Version 1
Design group 46.20 Steering gear
2010 Mercedes Benz SL 550 (230.471) V8-5.5L (273.965) Page 21
Date 07-07-2011
Validity Model series 230, all
Reason for change Damage code revised (refer to Supersedes P-B-46.20/60b
Complaint:
Cracking noise when steering left or right just before limit stop. Cracking noticeable at steering wheel. The cracking iS also noticeable on the
steering gear when stationary (vehicle standing on its wheels)
Cause:
Preload lost due to settling or irregularities in the contact surfaces at the bolted connections of the diagonal struts (1) or the reinforcement plate (2)
on the front axle carrier
Remedy:
Important:
The steering gear is not the cause of the problem. Do not replace the steering gear!
1.) Remove lower engine compartment paneling (AR61.20-P-1105R)
2.) Unclip cover on diagonal struts at front
3.) Remove diagonal struts (1), check contact surfaces on the struts and on the front axle carrier and eliminate any irregularities if necessary.
4.) Remove reinforcement plate (2) from front axle carrier, check contact surfaces on the plate and on the front axle carrier and eliminate any
irregularities if necessary.
5.) Install reinforcement plate (2) on front axle carrier => specified torque of retaining bolts, reinforcement plate to front axle carrier, model 230:
12 Nm (BA62.30-P-1006-01A)
6.) Install diagonal struts (1) => specified torque of retaining bolts, diagonal strut to front axle carrier, model 230: 70 Nm (BA62.30-P-1004-01A)
7.) Clip on cover
8.) Install lower engine compartment paneling (AR61.20-P-1105R)
Symptoms
Parts
Attachments
WIS-References
