Pistons-Fitting

The pistons have been cast and machined to one size and weight. The piston and rod assemblies are matched to weigh the same for engine balance.

FITTING PISTONS





Fig. 19

Piston and cylinder wall must be clean and dry. Piston diameter should be measured 90° to piston pin at size location shown in (Fig. 19). Cylinder bores should be measured halfway down the cylinder bore and transverse to the engine crankshaft center line. Refer to Cylinder Block Assembly and/or Piston, Engine Specifications. Pistons and cylinder bores should be measured at normal room temperature, 70°F (21°C).

PISTON PINS
The piston pin is full floating and is held in place by lock rings. Pistons and rods are weight matched for balance. Do Not switch pistons with other rods. Piston and Rods are serviced as an assembly for balance.