Truck Shop
Senior Member
I'm posting this because I get asked this question many times through the years. {How does the crank and rod assemble
on a Cummins compressor with no bottom inspection cover?}. Pretty simple really-it has a pass through crank shaft.
The one below I'm rebuilding for a friend is the common Holset SS296 found on small and big cam Cummins and also
used in other model numbers on various Cummins engines. 13.2 cfm 3.625 bore with a 2.00 stroke. The parts are available
for a rebuild cost with shipping $185.00.
The rod is aluminum with no insert bearing. To remove crank-rotate crank so rod journal is 90* to bore, remove front
bearing/mounting support and carefully slide crank out fishing con rod through rear crank journal. Very simple.
Coolant only flows through head cooling top of piston and air. One problem these always had was carbon deposits plugging
the ports in the head. The unloader is all located under top cover and in cylinder head, several parts but simple.
Plus There is a timing procedure-rotate engine till A-1-6 valve set mark is lined to pointer, there is a scribe mark on
the end of the compressor crank shaft set that between 9 and 10 o'clock. Although in Cummins N14 {2003} manual
It says it makes no difference on NT series engines-except BCIII's and NT88's -go figure. I time them all.
Average reman price is $375 with a $300 core.
on a Cummins compressor with no bottom inspection cover?}. Pretty simple really-it has a pass through crank shaft.
The one below I'm rebuilding for a friend is the common Holset SS296 found on small and big cam Cummins and also
used in other model numbers on various Cummins engines. 13.2 cfm 3.625 bore with a 2.00 stroke. The parts are available
for a rebuild cost with shipping $185.00.
The rod is aluminum with no insert bearing. To remove crank-rotate crank so rod journal is 90* to bore, remove front
bearing/mounting support and carefully slide crank out fishing con rod through rear crank journal. Very simple.
Coolant only flows through head cooling top of piston and air. One problem these always had was carbon deposits plugging
the ports in the head. The unloader is all located under top cover and in cylinder head, several parts but simple.
Plus There is a timing procedure-rotate engine till A-1-6 valve set mark is lined to pointer, there is a scribe mark on
the end of the compressor crank shaft set that between 9 and 10 o'clock. Although in Cummins N14 {2003} manual
It says it makes no difference on NT series engines-except BCIII's and NT88's -go figure. I time them all.
Average reman price is $375 with a $300 core.