Chrysler 2000 LHS - Page 995

INSTALLATION
The cylinder head bolts are tightened using a
torque plus angle procedure. The bolts must be
examined BEFORE reuse. If the threads are
necked down the bolts should be replaced (Fig.
66).
Necking can be checked by holding a scale or
straight edge against the threads. If all the threads
do not contact the scale the bolt should be replaced.
CAUTION: When cleaning cylinder head and cylin-
der block surfaces, DO NOT use a metal scraper
because the surfaces could be cut or ground. Use
ONLY a wooden or plastic scraper.
(1) Clean sealing surfaces of cylinder head and
block.
CAUTION: Ensure that the correct head gaskets are
used and are oriented correctly on cylinder block.
The 3.5L engine head gaskets have perfectly round
combustion sealing rings. The 3.2L engine does
NOT have perfectly round combustion sealing
rings.
(2) Install head gasket over locating dowels.
Ensure the gasket is installed on the correct side of
engine (Fig. 67).
(3) Install cylinder head over locating dowels.
(4) Before installing the bolts, lubricate the
threads with engine oil.
(5) Tighten the cylinder head bolts in the sequence
shown in (Fig. 68). Using the 4 step torque-turn
method, tighten according to the following torque val-
ues:
• Step 1: All to 61 N·m (45 ft. lbs.)
• Step 2: All to 88 N·m (65 ft. lbs.)
• Step 3: All (again) to 88 N·m (65 ft. lbs.)
• Step 4: + 90° Turn Do not use a torque
wrench for this step.
(6) Bolt torque after 90° turn should be over 122
N·m (90 ft. lbs.) in the tightening direction. If not,
replace the bolt.
(7) Clean right rear timing belt cover O-ring seal-
ing surfaces and grooves (Fig. 65). Lubricate new
O-rings with Mopart Dielectric Grease or equivalent
to facilitate assembly.
(8) Install rear timing belt covers (Fig. 64) and
(Fig. 65). Tighten bolts to specified torque:
• M10—54 N·m (40 ft. lbs.)
• M8—28 N·m (20 ft. lbs.)
• M6—12 N·m (105 in. lbs.)
Fig. 66 Checking Bolts for Stretching (Necking)
1 – STRETCHED BOLT
2 – THREADS ARE NOT STRAIGHT ON LINE
3 – THREADS ARE STRAIGHT ON LINE
4 – UNSTRETCHED BOLT
Fig. 67 Cylinder Head Gasket Identification
Fig. 68 Cylinder Head Bolt Tightening Sequence
9 - 114 3.2/3.5L ENGINE LH
REMOVAL AND INSTALLATION (Continued)