Dodge ram truck 3500 1996 Service Manual page 1196

9 - 201 5.9L (DIESEL) ENGINE
BR
C L E A N I N G A N D I N S P E C T I O N
(Continued)
Install the gerotor planetary i n the original posi­
tion. The chamfer must be on the O.D. and down.
Measure the tip clearance (Fig. 127). Maximum
clearance is 0.1778 mm (0.007 inch). I f the oil pump
is out of limits, replace the pump.
FEELER
GAUGE
J9109-21
Fig. 127 Tip Ciearance
Measure the clearance of the gerotor drive/gerotor
planetary to port plate (Fig. 128). Maximum clear­
ance is 0.127 mm (0.005 inch). I f the oil pump is out
of limits, replace the pump.
PORT
PLATE
Fig. 128 Gerotor to Port Plate Clearance
Measure the clearance of the gerotor planetary to
the body bore (Fig. 129). Maximum clearance is 0.381
mm (0.015 inch). I f the oil pump is out of limits,
replace the pump.
Fig. 129 Gerotor Planetary to Body Bore Clearance
Measure the gears backlash (Fig. 130). The limits
of a used pump is 0.080- 0.380 mm (0.003-0.015
inch). I f the backlash is out of limits, replace the oil
pump.
OIL PUMP
J 9 1 0 9 - 2 4
Fig. 130 Measure Gear Backlash
Install the back plate.
CYLINDER BLOCK
(1) Remove the engine assembly from the vehicle.
(2) Remove the cylinder head from the block.
(3) Remove the camshaft.
(4) Remove the piston/connecting rod assemblies.
INSPECTION
Measure the combustion deck face using a straight
edge and a feeler gauge (Fig. 131). The distortion of
the combustion deck face is not to exceed 0.010 mm
(0.0004 inch) i n any 50.00 mm (2.0 inch) diameter.
Overall variation end to end or side to side is 0.075
mm (0.003 inch).
I f the surface exceeds the limit, refer to Cylinder
Block Refacing.
Fig. 131 Combustion Deck Face Measurement
Inspect the cylinder bores for damage or excessive
wear.
Measure the cylinder bores (Fig. 132). I f the cylin­
der bores exceeds the limit, refer to Cylinder Bore
Repair.
Inspect the camshaft bores for scoring or excessive
wear.
Measure the camshaft bores (Fig. 133). Limit for
the No.l bore applies to the ID of the bushing.
If a bore exceeds the limit, refer to Camshaft Bore
Repair.