Propeller Shaft Inspection; Vertical Shaft Inspection - TOHATSU BFT250A Service Manual

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GEAR CASE (COUNTER ROTATION)

PROPELLER SHAFT INSPECTION

PROPELLER SHAFT O.D.
Measure the O.D. of the propeller shaft where the
bearings ride.
STANDARD:
At bevel gear [1]:
At needle bearing [2]:
SERVICE LIMIT:
At bevel gear:
At needle bearing:
If the measurement is less than the service limit,
replace the propeller shaft with a new one on assembly.
PROPELLER SHAFT RUNOUT
Support each journal with V-blocks as shown.
Set the dial indicator and measure the propeller shaft
runout while turning the shaft.
STANDARD:
SERVICE LIMIT: 0.02 mm (0.001 in)
If the measurement is more than the service limit,
replace the propeller shaft with a new one on assembly.

VERTICAL SHAFT INSPECTION

VERTICAL SHAFT O.D. (At needle
bearing)
Measure the O.D. of the vertical shaft where the needle
bearing [1] rides.
STANDARD:
SERVICE LIMIT: 30.470 mm (1.1996 in)
If the measurement is less than the service limit,
replace the vertical shaft with a new one on assembly.
17-44
27.974 – 27.983 mm
(1.1013 – 1.1017 in)
32.007 – 32.020 mm
(1.2601 – 1.2606 in)
27.949 mm (1.1004 in)
31.990 mm (1.2594 in)
0.02 mm (0.001 in) or below
30.491 – 30.500 mm
(1.2004 – 1.2008 in)
[2]
137.5 mm
108.5 mm
(5.4 in)
(4.3 in)
139.5 mm (5.5 in)
[1]
[1]