PISTONS - RINGS - RODSDisassemblySection 9PISTONS - RINGS - RODSRemove Piston and Connecting RodTo remove the piston and connecting rod from theengine, bend down connecting rod lock. Fig. 1. Removethe connecting rod cap. Remove any carbon or ridge atthe top of the cylinder bore; this will prevent breaking ofthe rings. Push the piston and rod out through the top ofthe cylinder.Fig. 1. Bending Rod LockPistons used in sleeve bore aluminum alloy engines aremarked with an "L" on top of the piston. Fig. 2. Illus. 1.These pistons are tin plated. This piston assembly isNOT INTERCHANGEABLE with the piston used inaluminum bore (KOOL BORE) engines.Pistons used in aluminum bore (KOOL BORE) enginesare NOT marked on top of the piston.Fig. 2. Illus. 2. The piston is chrome plated and is not tobe used in a sleeve bore engine.Fig. 2. Piston VariationsRemove Connecting RodTo remove connecting rod from piston, remove pistonpin lock with thin nose pliers. One end of the pin isdrilled to facilitate removal of the lock. Fig. 3.Remove rings one at a time as shown in Fig. 4, slippingthem over the ring lands. Use a ring expander to preventdamage to rings and piston.Fig. 3. Removing RodFig. 4. Removing RingsCheck PistonIf the cylinder is to be resized, there is no reason tocheck the piston, since a new oversized piston assemblywill be used.If, however, the cylinder is not to be resized, and thepiston shows no signs of wear or scoring, the pistonshould be checked.OCTOBER 19781
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