Dodge D150 1990 Service Manual page 880

• MANUAL TRANSMISSION 21 - 29
Fig. 47 Removing/Installing Front Bearing Locating
Snap Ring
Fig. 49 Removing/Installing Mainshaft Pilot Roller
Bearings
burrs, nicks, or any condition t h a t w o u l d render the
case unfit for further service. T h e f r o n t m a t i n g sur-
face should be smooth. I f any b u r r s are present, dress
Fig. 50 Removing/Installing Idler Shaft Snap Ring
t h e m off w i t h a fine m i l l file. I f any case threads are
stripped, i n s t a l l H e l i c o i l , or equivalent t h r e a d i n -
serts.
Bearings
Wash bearings, u s i n g a clean solvent and either a i r
dry t h e m o r wipe d r y w i t h clean shop towels. D o not
use c o m p r e s s e d
a i r to d r y t h e b e a r i n g s . C o m -
p r e s s e d
a i r a p p l i e d to u n l u b r i c a t e d b e a r i n g s
m a y c a u s e d a m a g e t o t h e b e a r i n g r a c e s a n d
b a l l s .
Be sure bearings a r e clean. Inspect bearings for
roughness. T h i s can best be determined by slowly
t u r n i n g b y h a n d .
Inspect a l l b e a r i n g rollers for flat spots or b r i n n e l -
l i n g . Inspect a l l bearing roller spacers for signs of
wear or g a l l i n g . Inspect roller contact surfaces of
gear and shaft. I n s t a l l new parts as required.
Refer t o t h e Bearing/Bushing/Seal Replacement
procedure i n t h i s section for bearing replacement
procedures. L u b r i c a t e the bearings w i t h 10W-30 en-
gine o i l ( A P I class SG/CD) after cleaning, inspection
and/or replacement.
Gears
Inspect countershaft gear a n d a l l gear teeth for
chipped or b r o k e n teeth, or showing signs of exces-
sive wear. S m a l l nicks or burrs must be removed
w i t h a n oilstone.
Inspect t e e t h on i n p u t shaft. I f excessively w o r n ,
broken, or chipped, a new p i n i o n should be installed.
I f the o i l seal contact area on drive p i n i o n shaft is
pitted, rusted, or scratched, a new p i n i o n is recom-
mended for best seal life.
Inspect s h i f t forks for wear on pads and shafts. Re-
place the forks i f w o r n or damaged.
Synchronizer Assemblies
Inspect spline t e e t h on synchronizer clutch gears
and stop r i n g s . I f there is evidence o f chipping or ex-