Propeller Shaft Inspection - TOHATSU BFT75A Service Manual

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GEAR CASE
If the air pressure drops, place the gear case in a
container filled with a water. Apply the specified air
pressure to the gear case again, move the shift rod,
vertical shaft and the propeller shaft, and locate the
point where the air is leaking.
Remove the gear case from the water and replace the
water seal or O-ring where the air is leaking.
After the replacing the water seal or O-ring, perform the
pressure check again and be sure that air is not leaking.
Remove the gear case pressure tester and the adapter
from the gear case.
Install a new O-ring on the oil check bolt, and tighten
the oil check bolt to the specified torque.
TORQUE: 6.5 N·m (0.66 kgf·m, 4.8 lbf·ft)

PROPELLER SHAFT INSPECTION

PROPELLER SHAFT O.D.
Measure the O.D. of the propeller shaft where the
bearings ride.
STANDARD:
At bevel gear [1]:
At needle bearing [2]:
SERVICE LIMIT:
At bevel gear:
At needle bearing:
If the measurement is less than the service limit,
replace the propeller shaft with a new one.
PROPELLER SHAFT RUNOUT
Support each journal with V-blocks as shown.
Set the dial indicator and measure the propeller shaft
runout while turning the shaft.
STANDARD: 0.02 mm (0.001 in) or below
If the measurement is out of the standard, replace the
propeller shaft with a new one.
16-44
24.987 – 25.000 mm
(0.9837 – 0.9843 in)
30.007 – 30.020 mm
(1.1814 – 1.1819 in)
24.966 mm (0.9829 in)
29.986 mm (1.1805 in)
[1]
[2]
167 mm (6.6 in)