I-3-4. Connecting Rod Assembly Replacement.
This procedure covers the replacement of the Single Cylinder Air
Compressor Connecting Rod Assembly, Cummins kit part number
4089212. The repair kit includes a connecting rod, sump access plug,
seals, gaskets, head bolts, and head and cover gaskets.
There is no need to remove the air and coolant fittings from the head
assembly unless replacing the head.
and head cover gasket. Retain the head assembly but discard the four large head bolts,
two cover screws, head cover gasket, and head gasket.
piston pin, and piston pin retaining clips unless also replacing the piston assembly.
Discard the connecting rod assembly, Torx head bolts, and connecting rod cap.
Many cleaning solvents are toxic, flammable, and/or may cause skin and
eye irritation. Strictly follow the manufacturer's instructions and use eye
protection, gloves, and protective clothing. Use in well-ventilated areas
away from heat and open flames. Use good personal hygiene prior to
eating, drinking, or smoking.
Do not use abrasive products that will leave grit after cleaning. Do not
allow debris and cleaning solvent to enter the cylinder bore.
Remove any carbon and varnish build-up by carefully scraping. If necessary, use a light
application of cleaning solvent.
Ensure all surfaces are clean, dry, and free of debris.
Install the piston assembly with new connecting rod. Refer to paragraph I-3-3. Use new
Torx head bolts and connecting rod cap supplied with the connecting rod service kit.
Insert the new head cover gasket and assemble the head and the cover with two new
head cover screws. Install the head assembly with new head gasket and head bolts