TOHATSU BFT 250A, Service Manual

Page: 502 / 639

16-48
dummyhead dummyhead
GEAR CASE (STANDARD 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
(Except LA type)
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 (LA and XA types)
Remove the gear case (page 16-8).
Thread two nuts onto the stud [1] and tighten them
together. Use a wrench to turn the stud bolt (12 x 40
mm) out.
Install a 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:
LA type 0.30 mm (0.012 in) or below
XA type 0.35 mm (0.014 in) or below
XXA type 0.40 mm (0.016 in) or below
SERVICE LIMIT:
LA type 0.30 mm (0.012 in)
XA type 0.35 mm (0.014 in)
XXA type 0.40 mm (0.016 in)
125.5 mm
(4.9 in)
26 mm
(1.0 in)
LA type: 560 mm (22.0 in)
XA type: 687 mm (27.0 in)
XXA 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)