Drivetrain - Rear Driveshaft Bump/Thump When Stopping
L-SB-0116-08September 17, 2008
Rear Driveshaft/Propeller Shaft Clunk/Thump Noise
Service Category
Drivetrain
Section
Drive Shaft/Propeller Shaft
Market USA
Applicability
TSIB SUPERSESSION NOTICE
The information contained in this TSIB supersedes TSIB No. DL002-07.
^ Applicability has been updated to include 2008 model year GX 470 vehicles.
^ Production Change Information has been added.
^ Warranty Information and Repair Procedure have been revised to omit the steps to "remove and replace control arm assemblies".
TSIB No. DL002-07 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before proceeding.
Introduction
Some owners of 2003 - 2008 model year GX 470 vehicles may experience a clunk/thump noise from the rear of the vehicle or a "bump-from-behind" sensation just before or after coming to a stop. A new propeller shaft assembly has been developed and implemented in production to improve this condition.
Production Change Information
This TSIB applies to vehicles produced BEFORE the Production Change Effective VIN shown.
Parts Information
Warranty Information
APPLICABLE WARRANTY
^ This repair is covered under the Lexus Powertrain Warranty. This warranty is in effect for 72 months or 70,000 miles, whichever occurs first, from the vehicle's in-service date.
^ Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Repair Procedure
1. Test drive vehicle and confirm noise condition.
NOTE
Check for the painted matchmarks on the transfer flange and differential flange when installing the NEW propeller shaft assembly. If the matchmarks are NOT visible, be sure to install the NEW propeller shaft in the same orientation as the original propeller shaft.
2. Remove and replace the 2-piece propeller shaft assembly.
Refer to the Technical Information System (TIS):
^ 2003 / 2004 / 2005 GX 470:
Drivetrain Driveshaft/Propeller Shaft "Propeller Shaft Assy: Overhaul"
^ 2006 / 2007 / 2008 GX 470:
Drivetrain Driveshaft/Propeller Shaft "Propeller Shaft Assy: Removal"
^ 2006 / 2007 / 2008 GX 470:
Drivetrain Driveshaft/Propeller Shaft "Propeller Shaft Assy: Installation"
A. Remove the propeller shaft assembly.
(1) Remove the 4 nuts and 4 washers (propeller shaft to transfer flange).
(2) Remove the 4 nuts, 4 bolts, and 4 washers and then the propeller shaft assembly (propeller shaft to differential flange).
B. Install the NEW propeller shaft assembly.
(1) Align the matchmarks on the yoke and the differential flange.
(2) Install the propeller shaft assembly with the 4 bolts, 4 nuts, and 4 washers.
Torque: 88 N*m (898 kgf*cm, 65 ft*lbf)
(3) Align the matchmarks on the yoke and the transfer flange.
(4) Install the propeller shaft assembly with the 4 nuts and 4 washers.
Torque: 88 N*m (898 kgf*cm, 65 ft*lbf)
3. Test drive vehicle and confirm repair effectiveness.