Inspection Of Crankshaft - TOHATSU MFS25 Service Manual

32) Inspection of Crankshaft

Measure crankshaft journal outer diameter a and crank pin
1.
outer diameter b. Replace crankshaft if either outer
diameter is less than specified value.
Crankshaft Journal Outer Diameter a : Standard Value
35.99 mm ( 1.4169 in )
Crank Pin Outer Diameter b : Standard Value
29.98mm ( 1.1803 in )
Functional Limit :
Crankshaft Journal Outer Diameter a :
Replace if a is less than 35.97 mm ( 1.4161 in ).
Crank Pin Outer Diameter b :
Replace if b is less than 29.95mm ( 1.1791 in ).
2. Measure crankshaft runout. Replace crankshaft if runout is
over specified value.
Crankshaft Runout Limit :
0.05 mm ( 0.0020 in )
3. Side Clearance
Side Clearance :
0.05 to 0.15 mm ( 0.0020 to 0.0059 in )
Functional Limit :
0.50 mm ( 0.0197 in )
If side clearance is out of specified range, measure crank
case (cylinder side) width d and crankshaft width c, and
replace the part of which width is out of specified range.
Crankshaft Width c : Standard Value
17.05 to 17.10 mm ( 0.6713 to 0.6732 in )
Crank Case Width d : Standard Value
16.95 to 17.00 mm ( 0.6673 to 0.6693 in )
25/30 2006
a a a
b
b
c c
d d
a
b
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