PISTON, PISTON RING, PISTON PIN CONSTRUCTION[LF, L3]

id0110a0100600

•  The pistons are made of aluminium alloy, which withstands heat and is highly conductive.
•  The piston skirt is coated with graphite to reduce friction.
•  The offset pistons are used to reduce piston-slapping noise.
•  To prevent the piston from being reassembled in the wrong direction, a front mark (←) is on the piston.
•  Pistons and connecting rods cannot be disassembled because they are shrinkage fit.

Piston Specification.

Outer diameter
mm {in}
87.465—87.495 {3.4435—3.4446}
Offset quantity
mm {in}
0.8 {0.04}
Compression height: HC
mm {in}
28.5 {1.122}
Piston height: HD
mm {in}
51.0 {2.0078}

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1
Piston side view
2
Offset
3
Outer diameter
4
Piston upper view
5
Install arrow facing engine front
6
Engine front side

•  The following piston rings have been adopted: Barrel face ring for top ring, taper under cut ring for second ring, 2 scuff rings and an expander for the oil ring.
•  The piston pin is made of chrome steel alloy, which has superior rigidity.
•  The connecting rod and the piston pin are shrinkage fit, so that it cannot be disassembled.
b3e0110t056

1
Top ring sectional view
2
Second ring sectional view
3
Oil ring sectional view
4
Expander
5
Side rail