Isuzu KB P190. Manual — part 1179

7B1-110 MANUAL TRANSMISSION

Checkpoint

Trouble

Cause

Countermeasure

Synchronizer assembly

Bearings (Mainshaft,

countershaft, and individual

gears)

Replace the spring

Replace the bearing(s)

Weak or broken spring

Worn or broken bearings(s)

Mainshaft splines

Synchronizer clutch hub

splines

Replace the main shaft and

the synchronizer clutch hub

Worn splines

OK

NG

NG

NG

OK

OK

Continued from the previous page

MANUAL TRANSMISSION 7B1-111

4. OIL LEAKAGE

Checkpoint

Trouble

Cause

Countermeasure

Gear oil

Replace the gear oil

Improper gear oil

Drain plug and/or filler plug

Tighten the plug(s) and

replenish the oil

Drain the oil to the correct

level

Loose plug(s)

Oil level too high

OK

NG

NG

NG

OK

OK

Oil level

Rear cover oil seal

Air breather

Replace the oil seal

Install the air breather

Replace the air breather

Worn or scratched oil seal

Air breather not installed

Air breather clogged

Front cover oil seal

Replace the oil seal

Replace the gasket(s)

Worn or scratched oil seal

Defective or improperly

installed gasket(s)

OK

NG

NG

NG

NG

OK

OK

Gaskets

7B1-112 MANUAL TRANSMISSION

Special Tools (4

××××4)

ILLUSTRATION

TOOL NO.

TOOL NAME

ILLUSTRATION

TOOL NO.

TOOL NAME

5-8840-2158-0

(J-37222)

Mainshaft retainer

remover

5-8840-2159-0

(J-37223)

Mainshaft end bearing

installer

5-8840-2027-0

Puller

5-8840-0015-0

(J-22912-01)

Bearing

remover/installer

5-8840-2160-0

(J-37224)

Holding fixture

5-8522-0050-0

(J-29769)

Rear case oil seal

installer

5-8840-0003-0

(J-3289-20)

Holding fixture base

5-8840-0026-0

(J-26540)

Front cover oil seal

installer

5-8840-2156-0

(J-37219)

Mainshaft nut wrench

9-8522-1165-0

(J-6133-01)

Mainshaft collar remover

5-8840-0047-0

(J-37225)

Tork bit wrench

(T– 45)

5-8840-0007-0

(J-8092)

Grip

MANUAL TRANSMISSION 7B1-113

ILLUSTRATION

TOOL NO.

TOOL NAME

5-8840-2194-0

Bearing installer