Problems with Rebuilt Copelands

[basprofessional]

I've had four rebuilt 6D Copelands blow heads gaskets shortly after startup (The rebuilds are not from Copeland and I'm not going to mention the company yet). And everytime the broken gaskets are between the cylinders.The gaskets are paper and the center bolt for the valve plate is missing in everyone...

[ryan1088]

Wow that really sucks. We use a machine local rebuilder and have had nothing but good luck with them.

[jeep6275]

So do you replace the gasket and install the missing bolt and all is well?

[remanworld]

Maybe the compressors are rebuilt incorrectly by inexperienced people. Our company does NOT rebuild, we only REMANUFACTURE. After 39 years you remember the little things (like putting the center bolt back in). Bad rebuilds make it hard on companies like ours. We all get lumped into the same category of "those guys that do bad rebuilding".

[Mac222]

i have seen a few times semi's blow gaskets due to problems with the expansion valve, both times the compressors blew head gaskets multiple times and after a lot of troubleshooting discovered that the expansion valves had been worked on, one of em was someone replaced an expansion valve and overheated it an caused problems with the distributor tubes had to install new distributor and valve, the other one was someone was trying to make adjustments to the valve when it wasn't a valve problem. did you figure out exactly if the problem was that missing center bolt, or system problems in the unit that took out the original compressors? just curious

[basprofessional]

Rebuilt or remanufactured, please, I'm not being sarcastic but explain to me the difference? Can you recommend a good organization that rebuilds or remanufactures compressors? I have not installed the center bolt but I'm baffled when a sticker on the compressor head says it has a center bolt and it does not???? Furthermore, I'm not sure what a faulty TXV has to do with a blown head gasket. I'm curios what your theory is concerning the faulty TXV???

[remanworld]

Rebuilt implies that the compressor was taken apart and the broken part(s) was replaced. The compressor was then put back together and returned to service.
Remanufacturing means that ALL LIFE CYCLE SENSITIVE PART ARE REPLACED. This means regardless of condition all con rods, pistons, bearings and valves are replaced. It also means that crankshafts are returned to factory dimensions without allowance for wear. In other words, the crank must be reground to a factory undersize dimension or replaced. Nothing is re-used "as is". Motor windings also must pass similar test. All in all, a remanufactured compressor is as good as a new one. The factory provides remanufactured compressors. In spite of what the factory says, outside companies can also do the same thing at a significant cost savings over the OEM. Our company in Detroit Michigan has been doing this for 30 years and we would be happy to help you with your compressor problems.

[jeep6275]

the txv blowing head gaskets, more than likely would be due to lack of superheat and liquid coming back to the compressor.

i have had several carlylse 06e (not exactly sure if thats the start of the model?) because of having too much oil in the crankcase, this oil gets swept up by the incoming refrigerant and blows gaskets in the head of the compressor because of the incompressibiliy of the oil.

i buy ALOT of remaned compressors and have had none that failed because of a bad build. its always been something in the system.


jeep

[jeep6275]

remanworld i couldnt find an email in your contacts? could you email me some info about your company?

thanks in advance.

jeep

[remanworld]

Sorry about my lack of contact info, I'm not really sure how I should update it. I joined this forum to watch for new industry trends and to see what types of problems the service techs were encountering with compressors and systems. I am happy to supply compressors and info about compressors to anyone that asks. Email questions to remaconcompressors@comcast.net and I'll be happy to help if possible.
Thanks,
Ray

[basprofessional]

I've always thought of blown head gaskets as an installation problem. I've always thought head gaskets blow because the valve cover is warped or not torqued properly. Furthermore, if there is a liquid problem I would expect to see damaged valves, I’m not seeing it. Did you see damaged valves? If I'm correct, your theory is the gaskets are going before the valves? By the way, this is a Copeland 6D compressor.

[flange]

the problem is that you are a control guy.....need a service tech.

in many places rebuilt means they take it apart, inspect it, and put it back together using maybe new gaskets. remanufactured as as stated above. without something holding that gasket there, and possibly with liquid entering the cyclinder, you get a double whammy and poof, thar she blows.

[basprofessional]

Sorry to burst your bubble pal but I'm a service guy...20+ years. Got into controls about eight years ago and I visit the wrench now and again. So unlike other technicians when there is a controls problem or mechanical I can handle both. Anyway, your telling me that no bad valves and a blown head gasket is liquid...Besides, the super is lower than what I like but it's not the worst I've seen.