airmaster8/30 piston size, and buying new

[brynic]

Hello all.
Realise this is a one off request for advice so dont shoot me please

Have above compressor and think rings gone, air coming out of crankcase.
Before taking fully apart i.e. eletric motor off, pulling out drive etc can any one say if piston rings for 1.938inch size piston will be of normal dimensions for the size of piston. i.e. all 1.938inch pistons have same dimension rings.

Live in spain so getting this kind of thing repaired locally is a nightmare, anyway it stretches the mind to try to do it yourself.
I will need to order the rings online so need some good advice before doing so.
Thanks in anticipation.

 

[Rig Pig]

Before you order any parts you need to strip it down and assess the wear. Its highly likely that the bore is worn as well - price the bits, a new compressor may be cheaper than freight + parts + whatever import tax.