Foley Engines ZF 45 C Repair Manual page 33

Repair Manual and Spare Parts List ZF 45C / 63C / 88C
Syptom
6. Shifting pressure
too low
7. No shifting pressure
available
8. Excessive fluid
temperature
9. Water in the fluid,
fluid looks milky
10. Fluid leakage at
output shaft
Possibly cause
6.1 Fluid filter clogged
6.2 Fluid level in transmission
too low.
6.3 Fluid pump is worn out
6.4 Spring in shifting pressure
relief valve is broken
6.5 Piston rings on input
shaft are faulty
6.6 O-rings in clutch
are faulty
7.1 Direction of engine rotation
does not agree with
arrow on transmission
7.2 No fluid in the transmission
7.3 Fine filter is dirty
7.4 Fluid level in transmission
is too low
7.5 Fluid pump worn out
7.6 Fitting key in input shaft
for fluid pump drive is
broken
8.1 Fluid cooler is too small
8.2 Excessive fluid in transmission
8.3 Fluid cooler is dirty on
water side
8.4 Worn fluid pump in
transmission
8.5 Faulty piston rings in
input shaft
8.6 Clutch is slipping
8.7 Clutch does not open
completely due to worn
disc support
8.8 With fluid cooler in bypass
and unfavorable
arrangement of pipelines
too little coolant waterflows
through bypass to
cooler
9.1 Fluid cooler faulty
9.2 High water level in
engine compartment,
water entering through
output shaft seal or
breather.
10.1 Breather clogged with paint or dirt
10.2 Shaft seal faulty
Remedy
Clean or replace fine filter
Top-up with fluid; in case
of fluid loss check transmission,
cooler and pipelines
for leakage and remedy
same; also refer to 10.
through 13.
Replace cover
containing fluid pump
Replace control valve
Replace piston rings. In case
of wear due to faulty piston
rings replace housing cover
as well
Disassemble transmission,
replace clutch O-rings
Rotate pump assy. of 180 °
Refill with fluid
Clean or replace fine filter
Top-up with fluid. In case of
loss of fluid check transmission,
cooler and pipelines
for leakage and remedy
same, also refer to 10.
through 13.
Replace pump cover and pump
Remove control block.
Replace fitting key, replace
any other faulty parts
Use a larger fluid cooler
Remove excessive fluid
Detach coolant water lines
and clean fluid cooler
on water side
Replace cover
taining fluid pump
Replace piston rings.
Refer to 3.
Dismount transmission and
coupling, replace all faulty
parts
Correct bypass pipeline
Repair leakage at cooler or
replace cooler. Change
transmission fluid
Remedy cause for water
level in engine compartment
change transmission fluid.
Remove paint or dirt from breather
Disassemble transmission, replace seal.
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