TOHATSU BFT115A Service Manual page 644

TRIM/TILT
Apply ATF to a new O-ring (1) and Install it on the
bottom of the piston rod (2).
Apply ATF to a new O-ring (3) and Install it on the
cylinder cap (4).
With the piston rod fully extended, install the piston rod
slowly into the cylinder (5).
Loosely tighten the cylinder cap.
• Do not push the piston rod into the cylinder when
installing it.
Tighten the cylinder cap (1) to the specified torque
using the special tool and a torque wrench (2) as
shown.
TOOL:
Pin wrench, 6 × 35 mm (3)
TORQUE: 208 N·m (21.2 kgf·m, 153 lbf·ft)
To tighten the cylinder cap with the 6 mm pin wrench,
read the torque as follows.
Formula:
Torque wrench (2) reading =[A x B] / [A + C]
A: Torque wrench effective length [m (ft)] (4)
B: Specified torque [N·m (kgf·m, lbf·ft)]
C: Pin wrench effective length [m (ft)] (5)
Example:
Torque wrench reading using a torque wrench with an
effective length of 0.4 m (1.31 ft) and pin wrench with an
effective length of 0.06 m (0.20 ft)
Torque wrench reading =
[0.4 (1.31) x 208 (21.2, 153)] / [0.4 (1.31)] + [0.06 (0.20)]
= 181 [N·m (18.5 kgf·m, 133 lbf·ft)]
A: Torque wrench effective length = 0.4 m (1.31 ft)
B: Specified torque = 208 N·m (21.2 kgf·m, 153 lbf·ft)
C: Pin wrench effective length = 0.06 m (0.20 ft)
I.e. torque wrench reading is 181 N·m (18.5 kgf·m, 133
lbf·ft).
Apply ATF to a new O-ring (1), new backup ring (2) and
install them on the piston rod B (3).
Install the backup ring on the piston rod with care not to
break it.
19-32
(5)
07SPA-ZW10101
(2)
(1)
(2)
(4) (5)
(3)
(2) (1)
(2)
(4)
(1)
(3)
(3)
(3)