Case dc4

[Matt Agnel]

Dear men
I am rebuilding a case dc4 and I am now at a stand still the piston closest to the rad does not want to go in with the new rings. All the other went in find and yes I am using a ring compressor Matt

 

[DKase]

Most likely one of 3 things. Ring groove not clean so ring will not go to bottom of ring groove. Ring to long. Did you check the ring gap in the sleeve before you installed them on the piston? Ring to thick so when it is in the bottom of the groove it is still larger outside diameter than the ID of the sleeve.

 

[TimBinWV]

Size each of the three rings in the sleeve, first. If the ring won't set level in the sleeve , file gap end of ring until it will. Then assemble to piston, and try again. If it still won't go, clean the ring groove real good. Good luck.

 

[johndeereman]

check the size of the sleeves the farmers used to just fix what was broke so there might be a chance you have 2 different size pistons

 

[Anonymous-0]

There should be end gap on the ring when compressed to allow for heat expansion. I think it's .0020"?

 

[Anonymous-0]

Ooops, too many zeros. I think it should be 0.020" (twenty thousanths).

 

[n2deep]

Things to try

Mic/measure the bore and the piston, check these diameters against the book/manual.

If you do not have a set of mic"s, Remove the rings from the piston and try fitting the piston into the bore. Also set a ring into the bore and check for overlap/gap at the end of the rings. Ensure that you have the ring at the same elevation in the bore. As a gentlemen stated earlier approximately .02" is generally required but check the manual to be sure.