LEMON Manuals: Even more car manuals for everyone
Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Engine - 3.9L) >> Timing Belt/Chain And Sprockets >> Inspection-Measuring Timing Chain Stretch

Inspection-Measuring Timing Chain Stretch

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Timing chain tensioner must be removed for this operation.
  1. Place a scale next to the timing chain so that any movement of the chain can be measured.
  2. Place a torque wrench and socket over camshaft sprocket attaching bolt. Apply torque in the direction of crankshaft rotation to take up slack; 41 N-m (30 ft. lbs.) torque with cylinder head installed or 20 N-m (15 ft. lbs.) torque with cylinder head removed. With torque applied to the camshaft sprocket bolt, crankshaft should not be permitted to move. It may be necessary to block the crankshaft to prevent rotation.
  3. Hold a scale with dimensional reading even with the edge of a chain link. With cylinder heads installed, apply 14 N-m (30 ft. lbs.) torque in the reverse direction. With the cylinder heads removed, apply 20 N-m (15 ft. lbs.) torque in the reverse direction. Note the amount of chain movement (Fig 1 ).
    Fig 1: Measuring Timing Chain Wear And Stretch
    G02656913Courtesy of DAIMLERCHRYSLER CORP.
  4. Install a new timing chain, if its movement exceeds 3.175 mm (1/8 inch).
scientia non olet · About LEMON Manuals