hi guys
today i was working on champion chiller, it was short on gas , looked for a leak and found it . it was on suction line on the compressor(scroll comp ) . i mean where the suction pipe comes out of the compressor. in the corner. so i was not very confident in fixing it. but reclaimed the gas , patched the leak , pressure tested and bubble tested it no leaks. so started charging but after running for 5 minutes the leak appeared again.

i know changing the compressor will be the best option. and may be putting a vibration absorbing suction line ( i don't know the name of that part) but what else can i do to solve the problem ,

may be some tips on joining body of compressor made of iron i thing to copper or something

you guys know better

i will be very thankful