Figure 4-4. Piston rings installed on piston.

Figure 4-4. Piston rings installed on piston.

Caution: Before installing "service"

piston rings in an engine which has not had the

cylinder rebored recently, use a hone to break

the glaze of the cylinder walls to assure proper

seating of the rings when the engine is restored

to service.

b. After pressing the piston pin (26, fig. 4-1) into

the piston (27) and rod (28), install a new retainer

ring (25) to secure the piston pin into place. Never

reuse the old retainer ring.

c. Oil the piston and ring assembly with engine

oil before inserting it into the cylinder bore. Make

sure the cylinder bore is also lubricated.

d. Use a standard piston ring compressor to

compress the piston rings on the piston when in-

stalling it on the engine. Push the piston into the

cylinder bore, using the handle of a hammer as

shown in figure 4-5. Do not pound it into place.

Figure 4-5. Pressing piston assembly into cylinder bore.