Dodge ram truck 3500 1996 Service Manual page 1195

B R — : , : —
C L E A N I N G AND I N S P E C T I O N (Continued)
5.9L (DIESEL) ENGINE 9 - 205
The minimum tappet stem diameter Is 15.925 mm
(0.627 Inch) - (Fig. 124). If the tappet Is out of limits,
replace the tappet.
NORMAL
WEAR
STEM DIAMETER-*-
ABNORMAL
WEAR
J9109-152
Fig, 12& Tappet inspection
CAMSHAFT
INSPECTION
Inspect the lift pump lobe, valve lobes and bearing
journals for wear, cracking, pitting and other dam­
age.
Clean the camshaft and gear with solvent and a
lint free cloth.
Inspect the gear teeth for wear and damage. Look
for cracks at the root of the teeth.
Measure the bearing journals, lift pump lobe and
valve lobes (Fig. 125).
OIL PUMP
CLEAN AND INSPECT
Visually inspect the lube pump gears for chips,
cracks or excessive wear.
Remove the back plate (Fig. 126).
Mark T O P on the gerotor planetary using a felt tip
pen (Fig.
126).
Remove the gerotor planetary (Fig. 126).
Inspect for excessive wear or damage.
Clean all parts in solvent and dry with compressed
air.
Inspect the pump housing and gerotor drive for
damaged and excessive wear.
VALVE
LOBE
CAMSHAFT
JOURNAL
CAMSHAFT JOURNAL DIAMETER ( M I N .
5 3 . 9 6 2 mm ( 2 . 1 2 4 5 inch)
VALVE LOBE HEIGHT (MIN.)
INTAKE - 4 7 . 0 4 0 mm ( 1 . 8 5 2 inch)
EXHAUST - 4 6 . 7 7 0 mm ( 1 . 8 4 1 inch)
LIFT PUMP LOBE DIAMETER (MIN.)
3 5 . 5 0 0 mm (1.398 inch)
J 9 1 0 9 - 5 3
Fig. 125 Bearing Journal/Valve Lobe Measurements
OIL PUMP
BACK PLATE
GEROTOR
GEROTOR
PLANETARY
J9109-156
Fig. 126 Gerotor Planetary and Gerotor