Inspection Of Piston Pins; Small End Inner Diameter; Big End Side Clearance; Inspection Of Connecting Rod Small End Inner Diameter - TOHATSU MFS 60A Service Manual

Power Unit

32) Inspection of Piston Pins

1. Measure piston pin outer diameter. Replace piston pin if
outer diameter is less than specified value.
Piston Pin Outer Diameter : Standard Value
17.00 mm (0.6693 in)
Functional Limit :
16.970 mm (0.66811 in)
Measure piston pin inner diameter a. Replace piston pin if
2.
the inner diameter is over specified value.
Piston Pin Inner Diameter a : Standard Value
17.005 mm (0.66949 in)
Functional Limit :
17.012 mm (0.66976 in)
3. Obtain clearance between piston pin and pin boss. Replace
piston pin or piston if the clearance is over specified value.
Clearance Between Piston Pin and Pin Boss :
0.002 to 0.012 mm (0.00008 to 0.00047 in)
Functional Limit :
0.040 mm (0.00157 in)
33) Inspection of Connecting Rod Small End
Inner Diameter
Measure connecting rod small end inner diameter a .
1.
Replace connecting rod if the diameter is over specified
value.
Connecting Rod Small End Inner Diameter a : Standard Value
17.012 mm (0.66976 in)
Functional Limit :
17.040 mm (0.6709 in)
34) Inspection of Connecting Rod Big End Side
Clearance
Measure connecting rod big end side clearance a. Replace
1.
connecting rod and/or crankshaft if the clearance is over
specified value.
Connecting Rod Big End Side Clearance a :
0.10 to 0.20 mm (0.0039 to 0.0079 in)
Functional Limit :
0.30 mm (0.0118 in)
5-44
a
a
a
4st 60 2019