ZF Repair Manual: ZF45C, 63C, 88C
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Repair Manual and Spare Parts List ZF 45C / 63C / 88C
3. FUNCTION TEST
When the transmission has been completely assembled
and filled up with transmission fluid, it would be convenient
to make a function test.
This test can be carried out on a bench test rig, or in a boat.
If no fluid cooler can be connected, a
hydraulic hose must
be connected
between the inlet and outlet of the
hydraulic
pump.
Measuring instruments required
•
Pressure gauge 0-25 bar (0-360 psi), with connecting
thread M10x1 (oil pressure gauge set with hole and
adaptor is available).
•
Temperature gauge 0-120
°
C (0-250
°
F), connecting
thread 3/8"-18NPSF.
•
Flow meter 0-35 liters/min
(0-10 gals/min).
Tests to be carried out:
1 Fluid leaks
2 Noise
3 Direction of rotation, LH/RH
4 Lube oil temperature
5 Shifting pressure
6 Lube oil flow rate
Motor speed rpm
Shift lever position
Durat. minutes
Test
800-1000
neutral
5
1, 2
600-800
A<->B position
-
1, 2, 3
(idling speed)
repeatedly
1500-2500
B position
*
1, 2, 4
600-800
A<->B position
-
1, 2, 3
(idling speed)
repeatedly
idling- max. speed
A position
-
1, 2, 5**, 6**
600-800
A->B position
-
1, 2
(idling speed)
idling- max. speed
B position
-
1, 2, 5**, 6**
* Until a fluid temperature of 75-80
°
C (167-176
°
F) has been reached.
** At different speeds.
A = FORWARD
B = REVERSE
THE FUNCTION TEST SHOULD BE CARRIED OUT FOLLOWS: