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GROUP
6-GENERAL TRANSMISSION SERVICE
TROUBLE SYMPTOMS
LOCKED IN GEAR
(Continued)
NOISY IN FORWARD
SPEEDS
NOISY IN REVERSE
POSSIBLE CAUSES
crossover engagement will not occur
due to excessive radial movement in
the column linkage (lost motion).
Lack of lubrication in column.
TRANSMISSION
1. Shift components not function-
ing properly.
2. Gear seizure.
3. Synchronizer inserts out of
position.
1.
.
L ow lubricant level.
2. Transmission misaligned or
loose.
lOOSe.
3. Input shaft bearings worn or
damaged.
4. Output shaft bearing worn or
damaged.
5. Mainshaft gears worn or dam-
aged.
(In
any case of scored or
broken gears, the mating gears
should
be checked).
6. Countershaft gear or bearings
worn or damaged.
7. Gear roll-over noise, inherent in
manual transmissions, is caused by
the
constant
mesh gears turning at
engine idle speed, while the clutch
is engaged and the transmission in
neutral; and throwout bearing rub
are
sometimes
mistaken for main-
shaft
bearing noise.
Gear
lioll-over
noise will disappear
when the clutch is disengaged or
when the transmission is engaged in
gear. Throwout bearing rub will dis-
appear when the clutch is engaged.
In the event that a bearing is de-
fective, the noise is more pronounced
while engaged in gear under load or
coast than in neutral. When com-
plaints
of this nature are encountered,
it will
be necessary to road test the
vehicle
to determine if bearing noise
exists.
Under no circumstances should
any transmission! rework be at-
tempted to eliminate gear roll-
over nC)ise, or throwout bearing
rub.
1. Reverse idler gear, bearing or
shaft, worn or damaged.
2. Reverse sliding gear worn or
broken.
CORRECTION
1-3. Install correctly, replace de-
fective parts.
2. Replace defective parts.
1. Fill to bottom of filler plug hole.
2. Align to specification. Torque
transmission - to - flywheel housing
bolts and flywheel housing-to-engine
bolts to specifications.
3-4-5-6-7. Replace worn or de-
fective parts.
1-2.
Replace worn or defective
parts.
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