Dodge 2001 Ram 1500 Owner's Manual page 1403

9 - 256 ENGINE 5.9L DIESEL
INTAKE/EXHAUST VALVES & SEATS (Continued)
Measure the valve spring free length and maxi-
mum inclination (Fig. 44).
Fig. 44 Measure Valve Spring Free Length and Max.
Inclination
VALVE SPRING FREE LENGTH
47.75 mm (1.88 in.)
MAX INCLINATION
1.5 mm (.059 in.)
Fig. 45 Testing Valve Spring with Tool C-647
1 - SPECIAL TOOL C-647
VALVE SPRING FORCE 35.33 mm @ 339.8 N (1.39 IN. @76.4
lbs.)
Test valve spring force with tool C-647 (Fig. 45).
INSTALLATION
(1) Install new valve seals. The yellow springs are
for the intake valves and the green seals are for the
exhaust valves.
(2) Install the valves in their original postion. The
exhaust valves are identified by a dimple on the
valve head (Fig. 46).
Fig. 46 Valve Identification
1 - INTAKE VALVES
2 - EXHAUST VALVES
(3) Install the valve springs and retainer.
(4) Install the valve spring compressor tool 8319–A
as shown in (Fig. 37) and (Fig. 38).
(5) Compress the valve springs and install the
valve retaining locks (Fig. 39).
(6) Remove the compressor and repeat the proce-
dure on the remaining cylinders.
(7) Install the injector clamp and hold down bolts
and tighten to 10 N·m (89 in. lbs.) torque.
(8) Install the cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - INSTALLATION).
STANDARD PROCEDURE—VALVE LASH
ADJUSTMENT AND VERIFICATION
NOTE: To obtain accurate readings, valve lash mea-
surements AND adjustments should only be per-
formed when the engine coolant temperature is less
than 60° C (140° F).
The 24–valve overhead system is a "low-mainte-
nance" design. Routine adjustments are no longer
necessary, however, measurement should still take
place when trouble-shooting performance problems,
or upon completion of a repair that includes removal
and installation of the valve train components.
(1) Disconnect battery negative cables.
BR/BE