Inspection Of Gear Case (For Leakage) - TOHATSU MFS25 Service Manual

10) Inspection of Gear Case (for leakage)

1. Drain gear oil.
Remove upper oil plug 1 and connect a commercially
2.
available leakage tester to this hole.
3. Apply specified pressure to gear base, and check if the
pressure is maintained without further compression for 10
seconds.
Specified Gear Case Maintained Pressure :
0.069 MPa ( 10 PSi ) [ 0.7 kgf/cm
• Rotating propeller shaft while maintaining
pressure and testing with gear oil drained
make it easy to find leakage due to wear of oil
seal lip.
• Depressurize gear case and cover oil plug
area with a piece of rag before disconnecting
leakage tester.
Do not apply pressure to gear case over
specified value.
Doing so can cause damage to oil seal.
4. If the specified pressure cannot be maintained, check oil
seals of drive shaft and propeller shaft and O ring of shift
shaft , propeller shaft housing and water pump case lower
for damages.
25/30 2006
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CAUTION
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