Jeep Liberty KJ. Manual — part 906
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 sec-
ondary 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 N·m (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.
13. Remove Special Tool 8429, 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 “V6” marks on camshaft sprockets
are at the 12 o’clock position.
9 - 1582
ENGINE - 3.7L
KJ
CAUTION: Ensure the plate between the left sec-
ondary 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. Remove all 3 locking pins from tensioners.
CAUTION: After pulling locking pins out of each
tensioner, DO NOT manually extend the tension-
er(s) ratchet. Doing so will over tension the
chains, resulting in noise and/or high timing chain
loads.
17. Using Special Tool 6958, Spanner with Adaptor
Pins 8346, (4) tighten left and right camshaft
sprocket bolts to 122 N·m (90 ft. lbs.).
18. Rotate engine two full revolutions. Verify timing
marks are at the follow locations:
•
primary chain idler sprocket dot is at 12 o’clock
•
primary chain crankshaft sprocket dot is at 6
o’clock
•
secondary chain camshaft sprockets “V6” marks
are at 12 o’clock
•
counterbalancer shaft drive gear dot is aligned to
the idler sprocket gear dot
19. Lubricate all three chains with engine oil.
20. After installing all chains, it is recommended that
the idler gear end play be checked. The end play
must be within 0.10 -0.25 mm (0.004 - 0.010 in.).
If not within specification, the idler gear must be
replaced.
21. Install timing chain cover and crankshaft damper.
Refer to procedures.
22. Install cylinder head covers (Refer to 9 - ENGINE/
CYLINDER HEAD/CYLINDER HEAD COVER(S) -
INSTALLATION).
KJ
ENGINE - 3.7L
9 - 1583
NOTE: Before installing threaded plug in right cyl-
inder head, the plug must be coated with sealant
to prevent leaks.
23. Coat the large threaded access plug with Mopar
T
Thread Sealant with Teflon, then install into the
right cylinder head (1) and tighten to 81 N·m (60
ft. lbs.) .
24. Install the oil fill housing.
25. Install access plug in left cylinder head (2).
26. Install power steering pump (Refer to 19 -
STEERING/PUMP - INSTALLATION).
27. Fill cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
28. Connect negative cable to battery.
9 - 1584
ENGINE - 3.7L
KJ
ENGINE - 2.8L DIESEL
TABLE OF CONTENTS
page
page
ENGINE - 2.8L DIESEL
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . 1601
HEAD-CYLINDER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1607
STANDARD PROCEDURE
VALVE SEALS - IN VEHICLE . . . . . . . . . . . . . . . 1607
STANDARD PROCEDURE - MEASURING
PISTON PROTRUSION.. . . . . . . . . . . . . . . . . . . 1609
VALVE SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . 1610
SEAL(S)-CAMSHAFT OIL
CAMSHAFT(S)
COVER-CYLINDER HEAD
ARMS-ROCKER
LIFTERS-HYDRAULIC
BLOCK-ENGINE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1629
CRANKSHAFT
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1630
CRANKSHAFT END PLAY . . . . . . . . . . . . . . . . . 1631
BEARINGS-CRANKSHAFT MAIN
SEAL-CRANKSHAFT OIL - FRONT
SEAL-CRANKSHAFT OIL - REAR
FLEX PLATE-2.8L
LINERS-CYLINDER
ROD-PISTON AND CONNECTING
FITTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1648
DAMPER-VIBRATION
PUMP-INTERNAL VACUUM
COVER-ENGINE - FRONT
MOUNT-LEFT ENGINE
RIGHT ENGINE MOUNT
OIL
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1663
ADAPTER-OIL FILTER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1664
KJ
ENGINE - 2.8L DIESEL
9 - 1585
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