TOHATSU BFT115A Service Manual page 572

GEAR CASE (COUNTER ROTATION)
Install the propeller shaft (1) into the propeller shaft
holder (2).
• Check that there is a groove (3) on the propeller
shaft. If there is no groove, this propeller shaft is for
standard rotation type.
Install the thrust bearing washer (4) with its chamfered
side (5) facing the propeller shaft holder side.
Apply gear oil to the threads and seating surface of the
bearing holder (1).
Set the bearing holder on the propeller shaft holder (2).
Loosely tighten the bearing holder on the propeller shaft
holder by hand.
Attach the fixing tool (3), which was used during
removal, on the propeller shaft holder and secure with
the bolts (4).
Hold the fixing tool with a vise.
• Avoid holding the propeller shaft holder directly in a
vise. Use the fixing tool to hold it in a vise.
Tighten the bearing holder to the specified torque using
the special tool and a torque wrench (5) as shown.
TOOL:
Pin spanner wrench, 110 mm (6) 07WAA-S1G0100
TORQUE: 191 N·m (19.5 kgf·m, 141 lbf·ft)
To tighten the bearing holder, read the torque as
follows.
Formula:
Torque wrench reading =[A x B] / [A + C]
A: Torque wrench effective length [m (ft)] (7)
B: Specified torque [N·m (kgf·m, lbf·ft)]
C: Pin spanner wrench effective length [m (ft)] (8)
Example:
Torque wrench reading using a torque wrench with an
effective length of 0.4 m (1.31 ft) and pin spanner
wrench with an effective length of 0.1 m (0.33 ft)
Torque wrench reading =
[0.4 (1.31) x 191 (19.5, 141)] / [0.4 (1.31)] + [0.1 (0.33)]
= 153 [N·m (15.6 kgf·m, 113 lbf·ft)]
A: Torque wrench effective length = 0.4 m (1.31 ft)
B: Specified torque = 191 N·m (19.5 kgf·m, 141 lbf·ft)
C: Pin spanner wrench effective length = 0.1 m (0.33 ft)
I.e. torque wrench reading is 153 N·m (15.6 kgf·m, 113
lbf·ft).
17-26
(3)
(1)
(2)
(1)
(2)
(5)
(7)
(4)
(5)
(6)
(5)
(3)
(4)
(6)
(8)