Grand Cherokee 2WD V6-3.7L (2008)
CAUTION: The silver bolts retain the guides to the cylinder heads and the black bolts retain the guides to the engine block.
4. Install the left side chain guide. Tighten the bolts to 28 Nm (250 in.lbs.).
5. Install left side chain tensioner arm, and Torx(R) bolt. Tighten Torx(R) bolt to 28 Nm (250 in.lbs.).
6. Install the right side chain guide. Tighten the bolts to 28 Nm (250 in.lbs.).
7. Install both secondary chains onto the idler sprocket (2). Align two plated links on the secondary chains to be visible through the two lower
openings on the idler sprocket (4 o'clock and 8 o'clock). Once the secondary timing chains are installed, Secondary Camshaft Chain Holder 8429
(1) to hold chains in place for installation.
8. Align primary chain double plated links with the timing mark at 12 o'clock on the idler sprocket. Align the primary chain single plated link with
the timing mark at 6 o'clock on the crankshaft sprocket.
9. Lubricate idler shaft and bushings with clean engine oil.
NOTE: The idler sprocket must be timed to the counterbalance shaft drive gear before the idler sprocket is fully seated.
10. Install all chains, crankshaft sprocket, and idler sprocket as an assembly. After guiding both secondary chains through the block and cylinder head
openings, affix chains with a elastic strap or equivalent. This will maintain tension on chains to aid in installation. Align the timing mark (2) on the
idler sprocket gear (3) to the timing mark on the counterbalance shaft drive gear (1), then seat idler sprocket fully. Before installing idler sprocket
bolt, lubricate washer with oil, and tighten idler sprocket assembly retaining bolt to 34 Nm (25 ft.lbs.).
NOTE: It will be necessary to slightly rotate camshafts for sprocket installation.
11. Align left camshaft sprocket "L" dot to plated link on chain.
12. Align right camshaft sprocket "R" dot to plated link on chain.
CAUTION: Remove excess oil from the camshaft sprocket bolt. Failure to do so can result in over-torque of bolt resulting in bolt failure.
