M939A2 air compressor rebuild kit or cross reference

[Suprman]

I searched the forum but could not find what I was looking for. My 931a2 air compressor is getting weak its fine when driving but wont build enough pressure at idle. There are no leaks the tanks hold air overnight. I was wondering if anyone had part numbers for the compressor or if there is a rebuild kit. I looked in the TM I found nsn numbers for all of the bolts and lines but not for the compressor itself. Has anyone changed their compressor any pointers would be appreciated
Thanks
Will

 

[porkysplace]

from the TM nsn 2990010800533
listed right under the lines

 

[Suprman]

Is it the same compressor for both the nhc250 and 6cta engines?

 

[Suprman]

Found it in the tm finally 2530-01-268-8740 part 3558006 it would appear to be a ss296c now I just have to find one

 

[wheelspinner]

Found it in the tm finally 2530-01-268-8740 part 3558006 it would appear to be a ss296c now I just have to find one

I had to replace mine, got a VERY nice take out from C and C Equipment, I think under $200 delivered. As far as changing it, you will need a half-moon wrench from Sears for one bolt in the back. All of the gaskets and the polymer spider were about 25 bucks at Cummins. If you have the right wrench, pretty straightforward job.

 

[Suprman]

Do you know what size half moon wrench you used so can make sure I have one in advance thanks

 

[wheelspinner]

Do you know what size half moon wrench you used so can make sure I have one in advance thanks

I just noticed this for an A2. Mine was on a 14L not an 8.3L. I don't know that my experience is still valid for your project. Sorry for the confusion.