Possible Causes
Possible Causes
1.Low oil level
1.Low oil level
2.Clogged oil filter
2.Clogged oil filter
3.Flywheel is in contact with
3.Flywheel is in contact with
other parts
other parts
4.Air is sucked
4.Air is sucked
5.Water mixed in oil
5.Water mixed in oil
6 Low flow rate of oil
6 Low flow rate of oil
7. Bearings worn or seized
7. Bearings worn or seized
1.Clutch drags
1.Clutch drags
2.Bearings worn or seized
2.Bearings worn or seized
Checking Method
Checking Method
Check oil level
Check oil level
Disassemble and check
Disassemble and check
Drain oil from oil filter or oil
Drain oil from oil filter or oil
tank and check for foreign
tank and check for foreign
matter.
matter.
Check joints and piping at
Check joints and piping at
suction side
suction side
Drain and check oil
Drain and check oil
Check piping for damage or
Check piping for damage or
bending
bending
Disassemble and check
Disassemble and check
Check whether the truck runs
Check whether the truck runs
with gears in neutral.
with gears in neutral.
Disassemble and check
Disassemble and check
Remedy
Remedy
Add oil
Add oil
Clean or replace
Clean or replace
Replace
Replace
Retighten or replace gasket
Retighten or replace gasket
Replace oil
Replace oil
Repair or
Repair or
replace
replace
Repair or
Repair or
replace
replace
Replace clutch plates
Replace clutch plates
Replace
Replace
Possible Causes
Possible Causes
(1) input plate broken
(1) input plate broken
(2) Bearings damaged or worn
(2) Bearings damaged or worn
(3) Gears broken
(3) Gears broken
(4) Spline worn
(4) Spline worn
(5) Noisy gear pump
(5) Noisy gear pump
(6) Loose bolts
(6) Loose bolts
(1) Bearings worn or seized
(1) Bearings worn or seized
(2) Gears broken
(2) Gears broken
(3) Spline worn
(3) Spline worn
(4) Loose bolts
(4) Loose bolts
Checking Method
Checking Method
Check rotational sound at low
Check rotational sound at low
rmp.
rmp.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Disassemble and check.
Remedy
Remedy
Replace input plate
Replace input plate
Replace
Replace
Replace
Replace
Replace
Replace
Repair or
Repair or
replace
replace
Retighten or replace
Retighten or replace
Replace
Replace
Replace
Replace
Replace
Replace
Retighten or replace
Retighten or replace
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-53-
-53-
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