Dodge RAM TRUCK 1500 1995 Service Manual page 1353

21 - 70 NV4500 MANUAL TRANSMISSION - —
FIRST
GEAR
J922M52
Fig. 73 Removing First Gear
(33) Remove first gear bearing from mainshaft
(Fig. 74).
MAINSHAFT FIRST
J922H53
Fig. 74 Removing First Gear Bearing
TRANSMISSION CLEANING AND INSPECTION
Clean the gears, bearings shafts, extension/adapter
housing and gear case with solvent. Dry all parts ex­
cept the bearings with compressed air. Allow the
bearings to either air dry or wipe them dry with
clean shop towels.
Inspect the reverse idler gear, bearings, shaft and
thrust washers (Fig. 75). Replace the bearings if the
rollers are worn, chipped, cracked, flat-spotted, or
brinnelled. Or if the bearing cage is damaged or dis­
torted. Replace the thrust washers if cracked,
chipped, or worn. Replace the gear if the teeth are
chipped, cracked or worn thin.
Inspect the drive gear and bearings (Fig. 76). Mi­
nor scratches and burrs on the gear surfaces can be
reduced with an oil stone and 400 grit paper wetted
with oil. Replace either bearing if worn, or damaged.
Replace the gear if any teeth, splines, or bearing sur­
faces are also worn or damaged.
Inspect the front bearing retainer and bearing cup
(Fig. 77). Replace the bearing cup if scored, cracked,
brinnelled, or rough. Check the release bearing slide
surface of the retainer carefully. Minor corrosion,
— — — — — — B R
SPACER SHAFT J922M83
Fig. 75 Reverse Idler Components
MAINSHAFT FRONT
PILOT BEARING
BEARING
DRIVE
GEAR J9221-181
Fig. 76 Drive Gear Components
nicks, or pitting can be smoothed with 400 grit emery
and polished out with crocus cloth. Wet the abrasive
paper and crocus cloth with oil when smoothing/pol­
ishing. Replace the retainer if worn or damaged in
any way. Do not reuse the original retainer
bolts. Install new bolts during assembly.
Inspect the countershaft and bearings (Fig. 78). Re­
place the bearings if worn, rough, flat spotted, or
heat checked. Check the countershaft gear teeth
carefully. Small nicks, scratches, or burrs can be re­
moved with an oil stone and 400 grit paper wetted
with oil. However, replace the shaft as an assembly if
the forward gear is loose, or any of the teeth are
worn, cracked, broken, or severely chipped.
Be sure to check condition of the countershaft bear­
ing cups. Replace either bearings cup if worn, or
damaged.
FRONT IDLER BEARINGS REAR
(32) Remove first gear from bearing and mainshaft
(Fig. 73).