TM 5-3810-307-24-1-2
I-3-4. Connecting Rod Assembly Replacement.
NOTE
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.
Removal.
NOTE
There is no need to remove the air and coolant fittings from the head
assembly unless replacing the head.
a.
Remove the head assembly. Refer to paragraph I-3-1. Remove two head cover screws
and head cover gasket. Retain the head assembly but discard the four large head bolts,
two cover screws, head cover gasket, and head gasket.
b.
Remove the piston assembly. Refer to paragraph I-3-3. Retain the piston assembly,
piston pin, and piston pin retaining clips unless also replacing the piston assembly.
c.
Discard the connecting rod assembly, Torx head bolts, and connecting rod cap.
Cleaning.
WARNING
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.
CAUTION
Do not use abrasive products that will leave grit after cleaning. Do not
allow debris and cleaning solvent to enter the cylinder bore.
a.
Remove any carbon and varnish build-up by carefully scraping. If necessary, use a light
application of cleaning solvent.
b.
Ensure all surfaces are clean, dry, and free of debris.
Installation.
a.
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.
b.
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
supplied with the connecting rod service kit. Refer to paragraph I-3-1.
I-12 Change-1
