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Dodge Ram Truck 1500-2500-3500. Manual - part 1340
7. Install
both
secondary
chains
onto
the
idler
sprocket. 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,
position special tool 8515 (6) to hold chains in
place for installation.
8. Align primary chain double plated links with the tim-
ing mark at 12 o’clock (1) on the idler sprocket.
Align the primary chain single plated link with the
timing mark at 6 o’clock on the crankshaft sprocket
(3).
9. Lubricate idler shaft and bushings with clean
engine oil.
10. Install all chains, crankshaft sprocket, and idler
sprocket as an assembly. After guiding both sec-
ondary chains through the block and cylinder
head openings, affix chains with a elastic strap or
the equivalent, This will maintain tension on
chains to aid in installation.
NOTE: It will be necessary to slightly rotate cam-
shafts 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.
13. Remove Special Tool 8515, then attach both sprockets to camshafts. Remove excess oil from bolts, then Install
sprocket bolts, but do not tighten at this time.
14. Verify that all plated links are aligned with the marks on all sprockets and the “V8” marks on camshaft sprockets
are at the 12 o’clock position.
CAUTION: Ensure the plate between the left secondary chain tensioner and block is correctly installed.
15. Install both secondary chain tensioners. Tighten bolts to 28 N·m (250 in. lbs.).
NOTE: Left and right secondary chain tensioners are not common.
16. Before installing idler sprocket bolt, lubricate washer with oil, and tighten idler sprocket assembly retaining bolt
to 34 N·m (25 ft. lbs.).
17. Remove all locking pins (3) from tensioners.
CAUTION: After pulling locking pins out of each tensioner, DO NOT manually extend the tensioner(s)
ratchet. Doing so will over tension the chains, resulting in noise and/or high timing chain loads.
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ENGINE - 4.7L - SERVICE INFORMATION
DR/DH