Sidekick JX 4D Hard Top 4WD L4-1.6L (1997)
Piston Pin: Description and Operation
The piston is cast aluminum alloy) and has two compression rings and one of ring. Among two compression rings (top and 2nd rings), the outer
surface of the top ring is treated with hard chromium for improvement in abrasion resistance.
The oil ring consists of two rails and one spacer. The piston pin is offset 0.5 mm towards the major thrust side. This allows a gradual change in thrust
pressure against the cylinder wall as the piston travels its -path. Pins, made of chromium steel, have a floating fit in the pistons and in the connecting
rods. The connecting rods are made of forged steel, and the rod bearings are of precision insert type.
