Chrysler RAM TRUCK 2500 1994 Service Manual page 744

(14) Connect the accelerator linkage and if so
equipped, the speed control and transmission kick-
down cables.
(15) Install the fuel lines.
(16) Install the generator and drive belt. Tighten
generator mounting bolt to 4 1 N-m (30 ft. lbs.)
torque. Tighten the adjusting strap bolt to 23 N-m
(200 in. lbs.) torque. Refer to Group 7, Cooling Sys­
tem for adjusting the belt tension.
(17) Install the intake manifold-to-generator
bracket support rod. Tighten the bolts.
(18) Place the cylinder head cover gaskets in posi­
tion and install cylinder head covers. Tighten the
bolts to 11 N-m (95 in. lbs.) torque.
(19) Install closed crankcase ventilation system.
(20) Connect the evaporation control system.
(21) Install the air cleaner.
(22) Install the heat shields. Tighten the bolts to
41 N-m (30 ft. lbs.) torque.
(23) Fill cooling system (refer to Group 7, Cooling
System for proper procedure).
(24) Connect the negative cable to the battery.
VALVES / VALVE SPRINGS
The valves are arranged in-line and inclined 18°.
The rocker pivot support and the valve guides are
cast integral with the heads.
This procedure requires the removal of the cylinder
head.
REMOVAL
(1) Remove the cylinder head.
(2) Compress valve springs using Valve Spring
Compressor Tool MD-998772A.
(3) Remove valve retaining locks, valve spring re­
tainers, valve stem seals and valve springs.
(4) Before removing valves, remove any burrs from
valve stem lock grooves to prevent damage to the
valve guides. Identify valves to ensure installation in
original location.
VALVE CLEANING
Clean valves thoroughly. Discard burned, warped
and cracked valves.
Remove carbon and varnish deposits from inside of
valve guides with a reliable guide cleaner.
VALVE INSPECTION
Measure valve stems for wear. If wear exceeds
0.051 mm (0.002 inch), replace the valve.
Measure valve stem guide clearance as follows:
(a) Install Valve Guide Sleeve Tool C-3973 over
valve stem and install valve (Fig. 7). The special
sleeve places the valve at the correct height for
checking with a dial indicator.
(b) Attach dial indicator Tool C-3339 to cylinder
head and set it at right angle of valve stem being
measured (Fig. 8).
Fig. 7 Positioning Valve with Tool C-3973
Fig. 8 Measuring Valve Guide Wear
(c) Move valve to and from the indicator. The to­
tal dial indicator reading should not exceed 0.432
mm (0.017 inch). Ream the guides for valves with
oversize stems if dial indicator reading is excessive
or if the stems are scuffed or scored.
Service valves with oversize stems are available
(Fig. 9).
Reamer O / S Valve Guide Size
0.076 mm
8.026 - 8.052 mm
(0.003 in.)
( 0 . 3 1 6 - 0 . 3 1 7 in.)
0.381 mm 8 . 3 3 1 - 8 . 3 5 7 mm
(0.015 in.) ( 0 . 3 2 8 - 0 . 3 2 9 in.)
J9309-30
Fig. 9 Reamer Sizes
Slowly turn reamer by hand and clean guide thor­
oughly before installing new valve. Ream the valve
guides from standard to 0.381 mm (0.015 inch).
Use a 2 step procedure so the valve guides are
reamed true in relation to the valve seat:
• Step 1-Ream to 0.0763 mm (0.003 inch).
• Step 2 - R e a m to 0.381 mm (0.015 inch).