Semi-hermetic Compressor leak

[moyerboy2]

I am fairly new to the commerical hvac industry, was in residential mostly. I ran in to a trame unit with a semi-hermetic that has a leak at the wire terminal block. I replaced all the gaskets and O-rings around the wire temrminals and torqued everything to correct foot pounds accourding to the book and I still have a leak in the terminal area. any suggestions would be great. Thanks in advance.

[wisecracker]

How was the terminal plate? Rusty? If you put it all back together properly, clean,tight, etc.. and it's still leaking. I would replace the terminal plate as well.

[moyerboy2]

thanks for the info I will look at it and see if it is rusty etc. Maybe I will replace the terminal plate also.

[ImpellerNut]

When I've done this, I lubed the o-rings and gaskets with fresh oil before installation. Then when the oil gets sucked up into the o-rings, they swell and seal MINT! How old is the compressor? :cool:

[lhatton]

Another possibility is your insulator blocks may need changing. I have 16 forty ton, and two 25 ton trane units that I maintain, and on more than one occasion I have had the same problem that you are having now. Most of my units are about 20 years old, so when ever I have to open a unit up, I pretty much do an overhaul on the whole unit. Good luck friend.