Inspection Of Gear Case (For Leakage); Inspection Of Water Pump - TOHATSU MD 70-90C2 Service Manual

Maintenance

3) 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 case, and check if the
pressure is maintained without further compression for 10
seconds.
· Do not apply pressure to gear case over
specified value.
· Doing so can cause damage to oil seal.
· 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.
Specified Gear Case Maintained Pressure:
0.05 MPa (7 psi) [0.5 kgf/cm
4. If the specified pressure cannot be maintained, check oil
seals of drive shaft and propeller shaft and O ring of shift
shaft, and propeller shaft housing and water pump case
lower for damages.

4) Inspection of Water Pump

1. Remove the following part.
Drive out spring pin 1 by using spring pin tool 2.
Spring Pin Tool A 2 (ø3.0):
P/N. 369-72217-0
● Remove gear case ass'y from drive shaft housing.
2. Remove the following parts.
3 Gear Case Plate (One M10 bolt is behind the plate.)
4 Bolts : M8 4 pcs.
5 Bolts : M10 2 pcs.
6 Gear Case Ass'y (Pull downward to remove.)
Speed meter pipe is put on the nipple of gear
case ass'y. After gear case has come down
slightly, remove pipe from nipple.
3-18
CAUTION
]
2
2
1
2 Gasket
Do not reuse.
2
1
Do not reuse.
5
3
6
1
6
4
TLDI 75/90C2 2010