5. Inspection and servicing of basic engine parts
123
• Other procedure of measuring crank pin oil clearance
1) Use the press gauge (Plastic gauge) for
measuring the oil clearance of the crank pin.
2) Mount the connecting rod on the crank pin (tighten
to specified torque).
3) Remove the connecting rod and measure the
broken plastic gauge with measuring paper.
(3) Precautions on replacement of crank pin
metal
1) Wash the crank pin metal.
2) Wash the large end cap, mount the crank pin
metal and make sure that it fits tightly on the large
end cap.
3) When assembling the connecting rod, match up
the large end and large end cap number. Coat the
bolts with engine oil and gradually tighten them
alternately to the specified torque.
If a torque wrench is not available, make match
marks on the bolt heads and large end cap before
disassembling (to indicate the proper torque
position) and retighten the bolts to those positions.
4) Make sure there is no sand, metal cuttings or
other foreign matter in the lube oil, and that the
crankshaft is not scratched. Take special care in
cleaning the oil holes.
Plastic gauge
Alignment mark (Punched mark)
Matching mark
Summary of Contents for 3YM30
Page 1: ...M9961 03E101 3YM30 3YM20 2YM15...
Page 22: ...1 General 1 4 Engine outline 1 3YM30 with KM2P 1 marine gear 6R1...
Page 23: ...1 General 2 3YM30C with SD20 sail drive 7R1...
Page 24: ...1 General 3 3YM20 with KM2P 1 marine gear 8...
Page 26: ...1 General 5 2YM15 with KM2P 1 marine gear 9 2R1...
Page 27: ...1 General 6 2YM15C with SD20 sail drive 185 9 3R1...
Page 30: ...1 General 3 2YM15 with KM2P 1 marine gear 11 2R1...
Page 31: ...1 General 11 3R1 4 2YM15C with sale drive SD20...