Dodge RAM TRUCK 1500 1995 Service Manual page 929

mm
§ J L ENGINE I - 85
CYLINDER H E A i COWER
A steel backed silicon gasket is used with the cyl­
inder head cover (Fig. 1). This gasket can be used
again.
CYLINDER HEAD
COVER GASKET V
J9209-105
Fig. 1 Cylinder Head Cower Gasket
REMOVAL
(1) Disconnect the negative cable from the battery.
(2) Disconnect closed ventilation system and evap­
oration control system from cylinder head cover.
(8) Remove cylinder head cover and gasket. The
gasket may be used again.
CLEANING
Clean cylinder head cover gasket surface.
Clean head rail, if necessary.
INSPECTION
Inspect cover for distortion and straighten, if nec­
essary.
Check the gasket for use in head cover installation.
If damaged, use a new gasket.
INSTALLATION
(1) The cylinder head cover gasket can be used
again. Install the gasket onto the head rail.
(2) Position the cylinder head cover onto the gas­
ket. Tighten the bolts to 11 N-m (95 in. lbs.) torque.
(3) Install closed crankcase ventilation system and
evaporation control system.
(4) Connect the negative cable to the battery.
VALVE COMPONENTS REPLACE—CYLINDER HEAD
NOT REMOVED
ROCKER ARMS AND PUSH RODS
REMOVAL
(1) Disconnect spark plug wires by pulling on the
boot straight out in line with plug.
(2) Remove cylinder head cover and gasket.
(3) Remove the rocker arm bolts and pivots (Fig.
2). Place them on a bench in the same order as re­
moved.
(4) Remove the push rods and place them on a
bench in the same order as removed.
ROCKER CYUNDEI
J9209-65
Fig. 2 Rocker Arms
INSTALLATION
(1) Rotate the crankshaft until the V8 mark lines
up with the TDC mark on the timing chain case
cover. This mark is located 147° ATDC from the No.l
firing position.
CAUTION: DO NOT rotate or crank the engine dur­
ing or immediately after rocker arm installation. Al­
low the hydraulic roller tappets adequate time to
bleed down (about 5 minutes).
(2) Install the push rods in the same order as re­
moved.
(3) Install rocker arm and pivot assemblies in the
same order as removed. Tighten the rocker arm bolts
to 28 N-m (21 ft. lbs.) torque.
(4) Install cylinder head cover.
(5) Connect spark plug wires.
VALVE STEM SEAL AND SPRING REPLACEMENT
This procedure is done with the cylinder head in­
stalled.
(1) Set engine basic timing to Top Dead Center
(TDC) and remove air cleaner.
(2) Remove cylinder head covers and spark plugs.
(3) Remove coil wire from distributor and secure to
good ground to prevent engine from starting.
(4) Using suitable socket and flex handle at crank­
shaft retaining bolt, turn engine so the No.l piston is
at TDC on the compression stroke.
(5) Remove rocker arms.
(6) With air hose attached to an adapter installed
in No.l spark plug hole, apply 620-689 kPa (90-100
psi) air pressure.
(7) Using Valve Spring Compressor Tool
MD-998772A, compress valve spring and remove re­
tainer valve locks and valve spring.
(8) Install seals on the exhaust valve stem and po­
sition down against valve guides.
(9) The intake valve stem seals should be pushed
firmly and squarely over the valve guide using the
valve stem as a guide. DO NOT force seal against top
of guide. When installing the valve retainer locks,
compress the spring only enough to install the locks.