TOHATSU BFT115A Service Manual page 597

THRUST CLEARANCE INSPECTION
• Always inspect the propeller shaft thrust clearance
when adjusting the backlash.
• Always adjust the propeller shaft thrust clearance
when forward bevel gear shim is replaced with new
ones.
Check that the bearing holder is securely tightened to
the specified torque on the propeller shaft holder (1)
(page 17-25).
Check that the clutch shifter and shift slider are not
installed (page 17-22).
Fix the propeller shaft holder on the fixing tool (2)
securely using the bolts as shown.
Set the dial indicator (3) perpendicularly so that its tip
contacts the end of the propeller shaft.
Move the propeller shaft up and down and read the
runout of the dial indicator. It must be within the
specified range.
THRUST CLEARANCE:
0.2 – 0.4 mm (0.008 – 0.016 in)
If the clearance is too large, increase the thrust shim
thickness and recheck the thrust clearance.
If the clearance is too small, reduce the thrust shim
thickness and recheck the thrust clearance.
GEAR CASE PRESSURE INSPECTION
• Perform the gear case pressure check and check for
pressure
reassembling the gear case.
• In principle, the pressure check should be made on
the gear case before filling it with gear oil and before
installing it on the outboard motor. However, the
check can be made with the gear case filled with
gear oil.
Remove the oil check bolt (1) and O-ring (2).
Install the adapter (special tool) (3) into the oil check
bolt hole.
Attach the hose end of the pressure tester S-34 (special
tool) (4) to the adapter.
Do not screw in the adapter and hose end with force.
TOOLS:
Pressure tester S-34
Adapter
While watching pressure tester gauge (1), apply the
specified air pressure to the gear case by pumping the
handle slowly.
• Do not apply excessive air pressure.
AIR PRESSURE:
29 kPa (0.3 kgf/cm
leakage after disassembling
07APJ-001A100
07APJ-001A300
2 , 4.3 psi)
GEAR CASE (COUNTER ROTATION)
(3)
(2)
(1)
and
(2)
(1)
(4)
(1)
(3)
17-51