Dodge RAM TRUCK 1500 1995 Service Manual page 1018

B R
S J L (DIESEL) ENGINE 9 - 179
ORIGINAL RADIUS
NEW UNDERCUT RADIUSv
JOURNAL SURFACE
©
SURFACE FINISH
©
0.8 micrometer (32.0 microinch)
for a mi n i m um of 45° Into the
• ®
fillet beyond journal surface
• ®
1.6 micrometer (64.0 microinch)
for remainder of fillet
0.4 micrometer (16.0 microinch)
J9109-129
Fig. 8 Grind Crankshaft Main Journal—Preferred
Method
FtOO JOURNAL
All rod journals are to be ground in the opposite di­
rection 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. 10.
PREFERRED PROCEDURE:
Smoothly blend a 4.00 ±0.020 (0.1575 ±0.0008
inch) radius to the ground diameters and side faces
(Fig. 11).
ALTERNATIVE PROCEDURE:
Smoothly blend a 1.25 ±0.020 mm (0.0492 ±0.0008
inch) radius to the ground journals (Fig. 12).
CRANKSHAFT FRONT SEAL
REM0WAL
(1) Remove the drive belt.
(2) Remove the vibration damper.
(3) Drill two l/8th inch holes into the seal face,
180° apart.
(4) Use a slide hammer tool with a #10 metal
screw. Pull alternating from side-to-side until the
seal is free.
ORIGINAL RADIUS
NEW UNDERCUT RADIUS ^
JOURNAL SURFACEs
SURFACE FINISH
© 0.8 micrometer (32.0 microinch)
for a minimum of 45° into the
fillet beyond journal surface
1.6 micrometer (64.0 miaoirtcb)
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. 9 Grind Crankshaft Main Journal—AIternative
Method
STANDARD ROD J O U R N A L DIAMETER
69.000 ±0.013 mm
(2.7165 ±0.0005 inch)
W O R N ROD J O U R N A L DIAMETER LIMIT
68.962 (2.7150 inch)
U N D E R S I Z E S
REGRIND TO
0.25 mm
68.750 +0.013 mm
(0.0098 inch) (2.7067 ±0.0005 inch)
0.50 mm
68.500 +0.013 mm
(0.0197 inch) (2.6969 ±0.0005 inch)
0.75 mm
68.250 ±0.013 mm
(0.0295 inch) (2.6870 ±0.0005 inch)
1.00 mm 68.000 ±0.013 mm
(0.0394 inch) (2.6772 ±0.0005 inch)
OUT-OF R O U N D & TAPER (MAX.)
0.005 mm (0.0002 inch)
ALL M A I N J O U R N A L S 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. 10 Crankshaft Rod Journal Dimensions
INSTALLATION
(1) The sealing surface on the crankshaft must be
free from all oil residue to prevent seal leaks.