Dodge ram truck 3500 1996 Service Manual page 1159

BR
5.9L (DIESEL) ENGINE 9 - 169
SERVICE PROCEDURES (Continued)
COMBUSTION
FACE
VALVE
SEAT
DEPTH
VALVE SEAT DEPTH
10.40 ±0.10 mm (0.4094 ±0.004 Inch)
VALVE SEAT WIDTH
47.0 ±0.013 mm (1.8504 ±0.0005 in)
MAXIMUM RADIUS
0.40 mm (0.0157 inch) MAX.
SURFACE FINISH
3.2 micrometers (128.0 microinch)
COMBUSTION
FACE
VALVE
SEAT
DEPTH
VALVE SEAT DEPTH
10.20 ±0.10 mm (0.4015 ± 0.004 inch)
* VALVE SEAT WIDTH
43.65 ±0.013 mm (1.7185 ± 0.0005 in)
MAXIMUM RADIUS
0.40 mm (0.0157 inch) MAX.
SURFACE FINISH
3.2 micrometers (128.0 microinch)
J9409-115
J9409-116
Fig. 9 Machining for Service Valve Seats—Intake
Valve
SERVICE VALVE SEAT GRINDING
Install the valves in their designated location and
measure the valve depth. The valve depth is the dis­
tance from the valve face to the head deck.
Record the depth of each valve (Fig. 11). The depth
is 0.99-1.52 mm (0.039-0.060 inch).
Grind the valve seats to remove scores, scratches
and burns. The valve seat angle is 30° (Intake) and
45° (Exhaust).
Install the valves i n their respective bores and
measure the depth again (Fig. 11). The valve depth
limit is 0.99-1.52 mm (0.039-0.060 inch). Replace the
valve i f the depth is over the limit.
Apply a light coat of valve lapping compound to
each valve and lap each valve to its companion seat.
Remove the valves and clean the lapping compound
from the valve and seats.
Fig. 10 Machining for Service Valve Seats—Exhaust
Valve
MIN. - 0 . 9 9 0 mm ( 0 . 0 3 9 inch)
MAX. - 1.520 mm ( 0 . 0 6 0 inch)
J 9 1 0 9 - 4 4
Fig. 11 Valve Depth with Seat Insert