Inspection Of Crankshaft - TOHATSU MFS 60A Service Manual

35) Inspection of Crankshaft

Measure crankshaft journal outer diameter a and crank
1.
pin outer diameter b. Replace crankshaft if either outer
diameter is less than specified value.
Crankshaft Journal Outer Diameter a : Standard Value
39.99 mm (1.5744 in)
Crank Pin Outer Diameter b : Standard Value
37.99 mm (1.4957 in)
Functional Limit :
Crankshaft Journal Outer Diameter a :
Replace if a is less than 39.97 mm (1.5736 in).
Crank Pin Outer Diameter b :
Replace if b is less than 37.97 mm (1.4949 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
24.05 to 24.10 mm (0.9468 to 0.9488 in)
Crank Case Width d : Standard Value
23.95 to 24.00 mm (0.9429 to 0.9449 in)
4st 60 2019
a a a
b
b
c c
d d
a
b
5
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