Centinel System – Repair Manual – 001-054   Piston and Connecting Rod Assembly

WARNING  When using solvents, acids, or alkaline materials for cleaning, following the manufacturer’s recommendations for use. Wear goggles and protective clothing to reduce the possibility of personal injury.

WARNING  Some solvents are flammable and toxic. Read the manufacturer’s instructions before using.

CAUTION  Do not use emery cloth or sandpaper to remove carbon from the cylinder liners. Aluminum oxide or silicon particles from emery cloth or sandpaper can cause serious engine damage. Do not use any abrasives in the ring travel area. The cylinder liner can be damaged.

Use a fine fibrous, abrasive pad such as Scotch-Brite™ 7448, Part Number 3823258, or equivalent, and solvent to remove the carbon.

Install two connecting rod guide pins, Part Number 3376038.

Use a T-handle piston pusher to push the connecting rod away from the crankshaft.

Push the connecting rod until the piston rings are outside of the top of the cylinder liner.

Remove the upper connecting rod bearing.

Mark the cylinder number and the letter U (upper) on the flat surface of the bearing tang.

Use both hands to remove the piston and connecting rod assembly.

The piston and connecting rod assemblies must be installed in the same cylinder they were removed from to provide for proper fit of worn mating surfaces if parts are reused.

Use a tag to mark the cylinder number from which each piston and connecting rod assembly was removed.

Place the connecting rod and piston assemblies in a container to protect them from damage.

A unique number (not cylinder number) is stamped on the connecting rod and matching connecting rod cap. When the connecting rods and connecting rod cap are installed in the engine, the numbers on the connecting rod and cap must match and be installed on the same side (the exhaust side) of the engine.