Dodge ram truck 3500 1996 Service Manual page 1167

B R
5.9L (DIESEI) ENGINE 9 177
S E R V I C E PROCEDURES ( C o n t i n u e d )
CAUTION: DO HOT use the Alternative Procedure
when the thrust surface width is ground,
ALTERIAIIWE PROCEDURE;
Smoothly blend a 1.25 ±0.020 mm (0.0492 ±0.0008
inch) radius to the ground diameters (Fig. 33).
ORIGINAL RADIUS
SURFACE FINISH
® 0.8 micrometer (32.0 microinch)
for a minimum of 45° into the
fillet beyond journal surface
® 1.6 micrometer (64.0 microinch)
for remainder of fillet
© 0.4 micrometer (16.0 microinch)
WIDTH OF REGRIND/UNDERCUT RADIUS
© 34.5 ± 0.025 mm (1.358 ±0.001 in)
J9109-130
Fig. 33 Grind Crankshaft Main Journai—Alternative
Method
ROD JOURNAL
All rod journals are to be ground in the opposite
direction of engine rotation (clockwise as viewed from
the front of crankshaft). Polish the journals in the
same direction as engine rotation.
The rod bearing grinding specifications are shown
in (Fig. 34).
PREFERRED PROCEDURE:
Smoothly blend a 4.00 ±0.020 (0.1575 ±0.0008
inch) radius to the ground diameters and side faces
(Fig.
35).
STANDARD ROD JOURNAL DIAMETER
69.000 + 0 . 0 1 3 mm
(2.7165 ± 0 . 0 0 0 5 inch)
W O R N ROD JOURNAL DIAMETER LIMIT
68.962 (2.7150 inch)
UNDERSIZES REGRIND TO
0.25 mm
(0.0098 inch)
68.750 + 0 . 0 1 3 mm
(2.7067 ± 0 . 0 0 0 5 inch)
0.50 mm
(0.0197 inch)
68.500 + 0 . 0 1 3 mm
(2.6969 ± 0 . 0 0 0 5 inch)
0.75 mm
(0.0295 inch)
68.250 + 0 . 0 1 3 mm
(2.6870 ± 0 . 0 0 0 5 inch)
1.00 mm
(0.0394 inch)
68.000 + 0 . 0 1 3 mm
(2.6772 ± 0 . 0 0 0 5 inch)
OUT-OF ROUND & TAPER (MAX.)
0.005 mm (0.0002 inch)
ALL M A I N JOURNALS ARE TO BE PARALLEL
TO THE FRONT A N D REAR M A I N S W I T H I N :
0.030 mm (0.001 inch)
J9109-126
Fig. 34 Crankshaft Rod Journal Dimensions
ORIGINAL RADIUS
JOURNAL SURFACE
SURFACE FINISH
0.8 micrometer (32.0 microinch)
for a minimum of 45° into the
fillet beyond journal surface
1.6 micrometer (64.0 microinch)
for remainder of fillet
0.4 micrometer (16.0 microinch)
J9109-131
Fig. 35 Crankshaft Rod Journal Grind—Preferred
Method