NMC-WOLLARD MB-4 200-DF, Operation, Maintenance And Parts Manual

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Group 100
Test and Troubleshooting
100
1
DPSG,YZ07927,83 –19–21JUN99–1/1
SUCTION LEAK TEST
Some indications of a suction leak includes:
•
Erratic oil pressure, Look for rapid fluctuation of
gauges.
•
Pump and filter hoses jumping.
•
Excessive air entrapment in the transmission oil.
•
A long prime time (time elapsed from engine start to
an indication of pump pressure).
TEST FOR SUCTION LEAK:
1. Fill to normal level with transmission fluid.
2. Install a 21 bar 2068 kPa (300 psi) pressure gauge
in the pump port.
3. Start the engine.
4. See if there is an indication of erratic oil pressure.
IMPORTANT: Check suction tube fitting for
tightness.
5. Check the transmission oil level.
IMPORTANT: Check transmission oil level; failure
to do so will result in poor
performance and over heating.
CTM195 (28JUL99)
100-1
2000 Series Transmission
072899
PN=39