Timing Chain Guide

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

NOTE: When servicing the timing chain guides, both the upper and the lower guide should be replaced in pairs.

Fig 1: TIMING CHAIN AND GUIDES

Courtesy of CHRYSLER LLC

Disconnect negative battery cable. Refer to Electrical/Battery System/CABLES, Battery - Removal
Remove the left cylinder head cover. See Engine/Cylinder Head/COVER(S), Cylinder Head - Removal .
Remove the right cylinder head cover. See Engine/Cylinder Head/COVER(S), Cylinder Head - Removal .

Remove the timing chain cover. See Engine/Valve Timing/COVER(S), Engine Timing - Removal .

Fig 2: Timing Chain Tensioner

Courtesy of CHRYSLER LLC

1 - ENGINE OIL CAP

2 - OIL LEVEL INDICATOR

3 - TIMING CHAIN TENSIONER

4 - OIL SEPARATOR ASSEMBLY

5 - CAMSHAFT POSITION SENSOR

Remove the timing chain tensioner (3).

Fig 3: LEFT EXHAUST CAMSHAFT DRIVE GEAR ALIGNMENT DOWEL

Courtesy of CHRYSLER LLC

1 - LEFT INTAKE CAMSHAFT

2 - LEFT EXHAUST CAMSHAFT DRIVE GEAR ALIGNMENT DOWEL

3 - LEFT EXHAUST CAMSHAFT DRIVE GEAR

4 - HIGH PRESSURE FUEL INJECTION PUMP

Rotate the engine and remove the right camshaft drive gear lower bolt.
Rotate the engine back to TDC and check the alignment marks at the balance shaft, camshaft gear and crankshaft gear.
Remove the remaining right camshaft drive gear retaining bolts.
Separate the right camshaft drive gear and chain from camshaft.
Remove the right camshaft drive gear.

Secure the chain so that there is slack at the timing chain guides but the chain remains on the crankshaft gear.

Fig 4: LEFT UPPER TIMING CHAIN GUIDE PIN EXTRACTION

Courtesy of CHRYSLER LLC

1 - GUIDE PIN

2 - SLIDE HAMMER

3 - LOWER TIMING CHAIN GUIDE

4 - UPPER TIMING CHAIN GUIDE

Cut a small section of tubing, with an inner diameter of the tube that is larger than the outer diameter of the timing chain guide pin, 25 mm (1 inch) in length.
Place the tube over the timing chain guide pin and thread a bolt into the timing chain guide pin in the right cylinder head. Tighten the bolt until the guide pin is removed from the cylinder head.

Fig 5: RIGHT TIMING CHAIN GUIDES
Courtesy of CHRYSLER LLC

1 - UPPER TIMING CHAIN GUIDE

2 - LOWER TIMING CHAIN GUIDE
Remove the bolt for the left upper timing chain.
Remove the upper timing chain guide from the left cylinder head.
Remove the bolt for the right upper timing chain.
Remove the upper timing chain guide in the right cylinder head.