Dodge ram truck 3500 1996 Service Manual page 1075

B R
5.2L ENGINE 9 - 85
CLEANING AND INSPECTION (Continued)
is 0.356 mm (0.014 inch) or more, replace oil pump
assembly.
8020cd6f
Fig. 64 Measuring Outer Rotor Clearance in
Housing
Install inner rotor and shaft into pump body. I f
clearance between inner and outer rotors is 0.203
mm (0.008 inch) or more, replace shaft and both
rotors (Fig. 65).
Fig. 65 Measuring Clearance Between Rotors
Place a straightedge across the face of the pump,
between bolt holes. I f a feeler gauge of 0.102 mm
(0.004 inch) or more can be inserted between rotors
and the straightedge, replace pump assembly (Fig.
66).
Inspect oil pressure relief valve plunger for scoring
and free operation in its bore. Small marks may be
removed with 400-grit wet or dry sandpaper.
The relief valve spring has a free length of approx­
imately 49.5 mm (1.95 inches). The spring should
test between 19.5 and 20.5 pounds when compressed
to 34 mm (1-11/32 inches). Replace spring that fails
to meet these specifications (Fig. 67).
I f oil pressure was low and pump is within specifi­
cations, inspect for worn engine bearings or other
reasons for oil pressure loss.
8020cd71
Fig. 66 Measuring Clearance Over Rotors
RN98
Fig. 67 Proper Installation of Retainer Cap
CYLINDER BLOCK
CLEANING
Clean cylinder block thoroughly and check all core
hole plugs for evidence of leaking.
INSPECTION
Examine block for cracks or fractures.
The cylinder walls should be checked for out-of-
round and taper with Cylinder Bore Indicator Tool
C-119. The cylinder block should be bored and honed
with new pistons and rings fitted if:
• The cylinder bores show more than 0.127 mm
(0.005 in.) out-of-round.
• The cylinder bores show a taper of more than
0.254 mm (0.010 in.).
• The cylinder walls are badly scuffed or scored.
Boring and honing operation should be closely coor­
dinated with the fitting of pistons and rings, so that
specified clearances can be maintained.
OIL LINE PLUi
The oil line plug is located in the vertical passage
at the rear of the block between the oil-to-filter and