TOHATSU BFT 250A, Service Manual

Page: 549 / 639

17-45
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GEAR CASE (COUNTER ROTATION)
VERTICAL SHAFT RUNOUT
Support each journal with V-blocks as shown.
Set the dial indicator and measure the vertical shaft
runout while turning the shaft.
If the measurement exceeds the service limit, replace
the vertical shaft with a new one.
VERTICAL SHAFT BUSH INSPECTION
VERTICAL SHAFT BUSH I.D.
Measure the vertical shaft bush [1] I.D.
If the measurement exceeds the service limit, replace
the vertical shaft bush with a new one.
GEAR CASE STUD BOLT
REPLACEMENT (XCA type)
Remove the gear case (page 17-7).
Thread two nuts onto the stud [1] and tighten them
together. Use a wrench to turn the stud bolt out.
Install new stud bolt into the extension case and tighten
them to the specified torque.
After gear case stud bolt installation, check that the
length from the bolt head to the extension case surface
is within specification.
STANDARD:
XCA type 0.35 mm (0.014 in)
or below
XXCA type 0.40 mm (0.016 in)
or below
SERVICE LIMIT:
XCA type 0.35 mm (0.014 in)
XXCA type 0.40 mm (0.016 in)
125.5 mm
(4.9 in)
26 mm
(1.0 in)
XCA type: 687 mm (27.0 in)
XXCA type: 814 mm (32.0 in)
STANDARD: 17.02 – 17.13 mm (0.670 – 0.674 in)
SERVICE LIMIT: 17.65 mm (0.695 in)
[1]
17.02 – 17.13 mm (0.670 – 0.674 in)
TORQUE: 22 N·m (2.2 kgf·m, 16 lbf·ft)
SPECIFIED LENGTH: 40 mm (1.6 in)
[1]
40 mm (1.6 in)