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Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (3.7L Engine (Service Information)) >> Valve Timing >> Standard Procedure >> Measuring Timing Chain Wear

Measuring Timing Chain Wear

WARNING: This page is about a different variant/trim than selected.
NOTE: This procedure must be performed with the timing chain cover removed.
  1. Remove the timing chain cover. See REMOVAL .
  2. To determine if the secondary timing chains are worn, rotate the engine clockwise until maximum tensioner piston 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 (0.5906 of an inch).
  3. If the measurement exceeds the specification the secondary timing chains are worn and require replacement. See REMOVAL .
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