Suspension - Thump Noise From Front Axle On Uneven Roads

2010 Mercedes Benz Truck GL 350 BLUETEC (164.825) V6-3.0L DSL Turbo (642.820)
Vehicle: All Technical Service Bulletins
Suspension - Thump Noise From Front Axle On Uneven Roads
Thumping noise from area of front axle when driving on uneven roads
Topic number LI32.22-P-051441
Version 2
Design group 32.22 Air suspension
Date 12-20-2011
Validity Model series 164 with code 489 (AIRMATIC) except AMG vehicles in VIN range between 164### #A 584636 and 164### #A Reason for change Remedy updated: Part number without Index 39
Complaint:
Thumping noise from area of front axle when driving on uneven roads
Cause:
Play in the torsion bushing of the air suspension strut on the front axle causes noise when driving on uneven roads
The noise only occurs in vehicles in the VIN range 164 ### #A 584636 to 164 ### #A 682631.
Remedy:
Replace air suspension strut.
Determine part number as per EPC.
Temporarily the part number was listed as ES1 39 for differentiation purposes - ES1 has now been deleted again.
Symptoms
Parts
WIS-References