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Post Info TOPIC: A technical question for Rex...


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A technical question for Rex...


Rex, One of the guys I work with just did, what I feel is a piss poor repair to a customer vehicle.  I have a feeling the repair won't last, and I stated my concerns to him, but they fell on deaf ears.  I was thinking to myself that "Even REX would know better than that."  And was wondering if you could satisfy my curiosity on the matter.

An 05 F350 with a 6.0 has a seized AC compressor.  What do you feel would be a proper way to repair this vehicle???  Please list the specific steps you would utilize if this vehicle came in to your "shop" with this concern.

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I dont know PowerStroker, I am not an AC man.

But if you want my opinion, well I guess it depends on what seized up. Did the clutch/bearing take a dump? If so just the clutch/bearing could be replaced.

If however the pump seized up internally, well thats a diffrent story. That may have sent contaminates thru the system and as such it would have to be cleaned and or replaced depending. Could also need a new belt in either case.

What did your stall mate do?

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Holy balls Rex, you're correct!!! (never thought I'd see the day)

The compressor seized internally, and yes, when that happens it sends metallic black death through the system. All my friend did was replace the compressor and recharge the system.
It is only a matter of time before the new compressor is destroyed.

Generally the industry practice is to flush the lines and evaporator with proper equipment and a special solvent. Then replace the orifice tube, replace the accumulator, replace the condenser (or flush it if possible), install a pancake filter on the suction side of the compressor, add the proper amount of pag oil, replace the compressor, then evac and recharge.

Your stock has risen ever so slightly today Rex, Congratulations!!!

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"If you can convince the lowest white man he's better than the best colored man, he won't notice you're picking his pocket. Hell, give him somebody to look down on, and he'll empty his pockets for you."     Lyndon B. Johnson

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It wasn't Scrot by the way. My former apprentice knows I would have his nuts in a tight twist if he ever pulled that kind of shit. The guy who did it is actually the "B squad" Diesel tech :(

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"If you can convince the lowest white man he's better than the best colored man, he won't notice you're picking his pocket. Hell, give him somebody to look down on, and he'll empty his pockets for you."     Lyndon B. Johnson

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He didnt even replace the orfice tube!? evileye

Well there can be no question as to if it will come back, the only question is WHEN.

I hope the Service Writer had the customer sign a waiver, as most remanufatures of these pumps do not warranty an improper install that results in damage due to debree. Inspection of the lines are a must. Steel fragments that become one with the oil is like liquid sand paper. Getting steel fragments out of condensors or reciver/driers is near impossible.

In the case the customer damanded that just the compressor be replaced, then there should be a waiver. I dont know how happy this customer will be when having to buy another new pump, plus the parts and labor to do it right. You can only hope he comes back. If he was made aware of the danger and decided to be a cheap-skate then it's all on him, if you have the waiver.

At the very least it sounds like this rookie lost your dealership a lot of gravy service and or part money and to be honest it will end up costing the customer too.

Then again there are some people that are just lucky as all hell, but sometimes I wonder if these people are even smart enough to know the diffrence.

 

 



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By the way I havent done much in the way of customer pay AC work since I opened up in 2001 and decided not to purchase the recovery unit.

I usually send it down to my dad's shop for evac's and re-charges. On occasion I will help out a customer with AC work but it usually ends up getting sucked and pumped at another shop.

On my own vehicles I just pump the stuff in the traditional way using small cans. I need to get the AC going in the 560 however I want to go with R12 to see if there is a big diffrence in head pressure. The 134a seems to build quite a bit and in the past 10 years I have seen 3 pumps perish with 134a. Then again I have seen MANY systems using R12 have pumps fail as well. Could just be a coencidence but I figure I could give it a try.

Check out this thread on BenzWorld.org where they suggest using propane instead of R12! LOL Quite a bunch of idiots over there! They make your B squad techs look smart!

http://www.benzworld.org/forums/w126-s-se-sec-sel-sd/1451145-ac-problem-solved-propane-did-i.html

WARNING! DO NOT USE PROPANE TO RECHARGE YOUR AC SYSTEM! THE THREAD ABOVE IS ONLY FOR A GOOD LAUGH! IF YOU BUY THE BS IN THAT THREAD, IT'S GOING TO BE YOUR ASS.

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There was no waiver for the customer. The problem wasn't the customer being cheap, the problem is with the technician being stupid and lazy. The customer isn't even aware of the pending doom because the tech never even gave him an estimate to do it properly. I'm just disgusted over the matter because it makes our whole dealership look bad.

When I voiced my concerns to the tech, his answer to me was: "That's ok, If the new compressor fails it will be covered by service part warranty."

Problem is, service part warranty only covers the part and the cost of the labor for the original repair. Since the original repair was done half assed, there will be no reimbursement for the needed flushing, and the same tech will simply slap another compressor on and begin the cycle of self destruction all over again.

Yeah, and propane is a very bad idea, but I've seen it done. My previous dealer had a refrigerant identifier we used prior to hooking up our ac service machine. My current dealer doesn't, and it wouldn't surprise me if at some point someone hooked it up to a vehicle with some propane in it and contaminated our equipment and any car we hooked it up to since.

I'm surrounded by idiots... Except for Scrot, he turned out ok!

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"If you can convince the lowest white man he's better than the best colored man, he won't notice you're picking his pocket. Hell, give him somebody to look down on, and he'll empty his pockets for you."     Lyndon B. Johnson

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PowerStroker wrote:

I'm surrounded by idiots... Except for Scrot, he turned out ok!


You know I could have sworn you just said in another thread the dealership was THEE PLACE to take your car.

Now it's "The dealership is the best place if Cock and Ball Sac is working on your car" But anyone else, and it's hack city...

Maybe you should open your own shop PowerStoker and quit being a pussy!


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While it's true that even dealerships have a percentage of idiots working, it is also true that the percentage of idiots at independent shops is MUCH higher.

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"If you can convince the lowest white man he's better than the best colored man, he won't notice you're picking his pocket. Hell, give him somebody to look down on, and he'll empty his pockets for you."     Lyndon B. Johnson

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I am thinking about hiring some help



Much better to look at all day than say...... Scrot

Then again you did like that homosexual stall mate. 

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