Dodge RAM TRUCK 1500 1995 Service Manual page 999

9 - 158 5.9L (DIESEL) ENGINE
MIN. - 0.990 mm (0.039 inch)
MAX. - 1.520 mm (0.060 inch)
J9109-44
Fig. 14 Valve Depth with Seat Insert
M A X I M U M
Fig. 15 Valve Seat Width
SERVICE VALVE SEAT REPLACEMENT
Tb replace service seat inserts, machine the insert
i n the same manner as i f machining out the internal
seat. H o l d the same tolerances and follow the same
installation procedures.
INSTALLATION
(1) Clean all cylinder head components before as­
sembling.
(2) I n s t a l l the valve stem seals (Fig. 16). The i n ­
take and exhaust valve seals are the same.
(3) Lubricate the stems w i t h SAE 90W oil before
installing the valves. I n s t a l l the valves i n the same
positions as removed.
(4) Compress the valve spring after installing the
spring and retainer (Fig. 17).
(5) I n s t a l l new valve collets and release the spring
tension (Fig. 17).
WARNING: W E A R PROTECTIVE EQUIPMENT AND
DO NOT STAND IN LINE WITH THE VALVE STEM
W H E N TAPPING THE VALVES.
BR
Fig. 16 Valve Stem Seal Installation
COLLETS VALVE
Fig. 17 Waive, Valve Spring and Collet Installation
(6) Tap the ends of the valve stems w i t h a mallet
to verify the collets are seated.
(7) Install the cylinder head.
(8) Check the valve clearance adjustment.
VALVE CLEARANCE ADJUSTMENT
Use the t i m i n g pin to locate Top Dead Center
(TDC) for cylinder N o . l (Fig. 18). The t i m i n g pin is
located at the back of the gear housing and below the
injection pump.
Be sure to disengage the timing
pin after locating top dead center. Refer to
TIMING PIN for more information.
Adjust the valves when the engine is cold, below
60°C (140°F).
STEP 1
Adjust the clearance for the valves shown i n Fig.
19. The valve lash adjustment is 0.254 m m (0.010
inch) for the intake valve. The valve lash adjustment
is 0.508 m m (0.020 inch) for the exhaust valve.
Tighten the valve adjusting nuts to 24 N*m (18 ft.
lbs.) torque.
Be sure timing pin is disengaged before rotat­
ing the crankshaft.
M a r k the pulley and rotate the
crankshaft 360°.