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 TROUBLE-SHOOTING GUIDE
CAUSE
INDICATED BY
REMEDY
ENGINE RUNS BUT MACHINE
WILL NOT DRIVE IN EITHER DIRECTION:
1. Insufficient transmission
Low reading on dipstick
Fill transmission to proper
fluid
level
2. Faulty transmission control
Check all linkage and cables
linkage
-
for proper adjustment
3. Plugged charge pump
Low or zero charge pressure
Replace or clean suction line
suction line or filter
and filter
4. Defective charge pump or
Low or zero charge pressure
Replace defective assembly
relief valve
5. Defective fiber ring gear
Zero charge pressure.
Remove engine and replace
Hydraulic system inoperative
ring gear
MACHINE OPERATES IN ONE
DIRECTION ONLY:
1. Defective control linkage
-
Check and adjust
2. Defective clutch pack
Low or zero clutch pressure
Refer to transmission service
manual
TRANSMISSION OVERHEATS:
1. Insufficient transmission
Low reading on dipstick
Fill to proper level
fluid
2. Insufficient cooling
Dirty or plugged cooler
Remove transmission oil
cooler and clean rad and
cooler assembly
3. Insufficient oil flow thru
Low gpm reading
Remove and flush oil cooler
cooler
4. Transmission brake not
-
Check control and adjustment
released
5. Plugged charge pump
Low charge pressure
Replace or clean suction line
suction line or filter
and filter
6. Defective charge pump or
Low charge pressure
Replace defective assembly
relief valve
TRANSMISSION PRESSURE
SYSTEM ANALYSIS :
1. Low oil level
Converter out pressure low
Fill to proper level
Clutch pressure low
2. Cooler or system restriction
Converter out, pressure high
a) Check cooler hoses for
Cooler out pressure drop low
restriction
b) Clean cooler
c) Replace defective cooler
3. Defective pump or relief
a) Converter out pressure low
Repair or replace defective
valve
Converter pressure low
pump or relief valve
Clutch pressure low
b) Converter pressure high
Repair or replace defective
Clutch pressure high
relief valve
Rev. 760501
K300
400-5.4
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