Piston Pin: Testing and Inspection
PISTON PIN CLEARANCEPiston Pin Inner Diameter:
1. Measure inner diameter of piston pin hole "dp".
Standard: 20.987 - 20.999 mm (0.8263 - 0.8267 In)
Piston Pin Outer Diameter:
2. Measure outer diameter of piston pin "Dp".
Standard: 20.989 - 21.001 mm (0.8263 - 0.8268 in)
3. Calculate interference fit of piston pin to piston.
dp - Dp: 0 - 0.004 mm (0 - 0.0002 In)
NOTE: If it exceeds the above value, replace piston assembly or pin.
PISTON PIN BUSHING CLEARANCE
Connecting Rod Bushing Clearance:
1. Measure inner diameter "C" of bushing.
Connecting Rod Bushing Diameter:
2. Measure outer diameter of piston pin "Dp".
Standard: 20.989 - 21.001 mm (0.8263 - 0.8268 in)
3. Calculate connecting rod bearing clearance C - Dp =
Standard: 0.005 - 0.017 mm (0.0002 - 0.0007 in)
Limit: 0.023 mm (0.0009 in)