Measuring Timing Chain Wear

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Measuring Secondary Timing Chains For Wear

Courtesy of CHRYSLER LLC

1 - SECONDARY TENSIONER ARM

2 - SECONDARY CHAIN TENSIONER PISTON

NOTE: This procedure must be performed with the timing chain cover removed.

Remove the timing chain cover. See Engine/Valve Timing/CHAIN and SPROCKETS, Timing - Removal .
To determine if the secondary timing chains are worn, rotate the engine clockwise until maximum tensioner piston (2) extension is obtained. Measure the distance between the secondary timing chain tensioner housing and the step ledge on the piston. The measurement at point (A) must be less than 15 mm (.5906 inches).
If the measurement exceeds the specification the secondary timing chains are worn and require replacement. See Engine/Valve Timing/CHAIN and SPROCKETS, Timing - Removal .