MDX V6-3.7L (2007)
Timing Belt Idler Pulley: All Technical Service Bulletins
Engine - Chirping Noise From Lower Timing Belt Area
08-031
February 17, 2011
Applies To:
See VEHICLES AFFECTED
Chirp From the Timing Belt Area
(Supersedes 08-031, dated May 21, 2010, to revise the information marked by the black bars and asterisks)
REVISION SUMMARY
*Under REPAIR PROCEDURE,step 8, a note about inspecting the timing belt auto-tensioner was added.*
SYMPTOM
A chirp is coming from the lower timing belt area. The noise is most prominent at idle, usually after the engine has warmed up.
PROBABLE CAUSE
The idler pulley mounting surface is tilted, causing the edge of the timing belt to rub against the side of the drive pulley (gear).
VEHICLES AFFECTED
CORRECTIVE ACTION
Install a taper shim kit and, if needed, grind a deeper relief on the engine mount bracket.
The vehicles below also require water pump replacement:
PARTS INFORMATION
Taper Shim Kit (Contains taper shim, timing belt, and timing belt drive pulley [gear]):
2005 models: P/N 04148-RCA-305
2006-2009 models: P/N 04148-RCA-306
