a/c project
02-24-2002, 02:45 PM
#1
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a/c project
since compressor is out on the garage floor, how difficult is it (wyait) to replace front seal(s) and where may they be procured? bosch - made in japan.
02-26-2002, 03:24 AM
#3
Snow,
Both, DR BOB and John Pitman have posted to the
A/C section of the Nichols Site. Though they both were involved with the compressor DR BOB was relay specific and John Pittman was replacing bearings. Either might be helpful but John's is an 83' and might be closer to your needs. Are the seals bad or is this a preventative WYAIT?
Also, there is an automotive A/C website listed on the Nichols Site: <a href="http://aircondition.com" target="_blank">http://aircondition.com</a>
with a reference to use the board there for questions.
HTH
John S. & Pcakes
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Both, DR BOB and John Pitman have posted to the
A/C section of the Nichols Site. Though they both were involved with the compressor DR BOB was relay specific and John Pittman was replacing bearings. Either might be helpful but John's is an 83' and might be closer to your needs. Are the seals bad or is this a preventative WYAIT?
Also, there is an automotive A/C website listed on the Nichols Site: <a href="http://aircondition.com" target="_blank">http://aircondition.com</a>
with a reference to use the board there for questions.
HTH
John S. & Pcakes
<img src="graemlins/bigok.gif" border="0" alt="[thumbsup]" />
02-26-2002, 09:53 AM
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compressor was soaked in oil and grit. went the reman route instead of rebuild. incidentally, a/c clutch was caked with grit and needed a thorough cleaning.
02-26-2002, 07:53 PM
#5
Know the feeling.
Other than a weep- no drips - I haven't had any oil leakage...per se. However, there is that awful - like Grandma's kitchen -light coating of gunk. Even clean looking surfaces have it.
Was going to have the eng.compartment detailed after the windy season. But I am concerned about a number of wiring connectors.
Washed and waxed yesterday - low 80's clear light breeze... Just finished and went for a ride.
Temperature dropped 40 degrees in under an hour. wind jumped to 30mph plus and brought a good deal of Northern Texas with it.
Sand gets into and on everything here.
Other than a weep- no drips - I haven't had any oil leakage...per se. However, there is that awful - like Grandma's kitchen -light coating of gunk. Even clean looking surfaces have it.
Was going to have the eng.compartment detailed after the windy season. But I am concerned about a number of wiring connectors.
Washed and waxed yesterday - low 80's clear light breeze... Just finished and went for a ride.
Temperature dropped 40 degrees in under an hour. wind jumped to 30mph plus and brought a good deal of Northern Texas with it.
Sand gets into and on everything here.
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03-01-2002, 07:09 PM
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anyone ever notice how little room there is to remove the two rear fittings (19mm) from the expansion valve, especially the driver's side? must unscrew passenger side first and pull back 1/2" to gain wrench clearance on the driver's side. also, if you slide long 19mm through gap in rear hood and firewall the wrench does not sit 90 degrees to fitting and presents problems. use a shorter 19mm and approach from the front. haven't reconnected lines but can tell will be on x-thread alert. may first try attaching front fittings loosely then rear fittings. forgot what a tight area this is. gotta remove the wiper actuator bolt and swing it out of the way as well. TRUE PITA.
03-03-2002, 11:44 PM
#9
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Reps from the big 3 advise that compressor rebuilds often fail. I would buy an aftermarket replacement. Mounting brackets may require custom installation/refit.
HTH
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HTH
<img src="graemlins/sleep.gif" border="0" alt="[sleep]" />
03-09-2002, 02:48 AM
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mid-assembly update:
the compressor becomes real heavy when the time comes to bolt it back up, also real ungainly with the two hoses clamped to it.
speaking of hoses, they superceded the pressure hose from the compressor to the inlet (top) of the condenser. the part that snakes past the right side of the radiator used to be rubber hose and was easy to thread up. now, that part is a metal line with about 4 different bends in it. TIP: don't attach the condenser to the body until all the lines are hooked up. save the pressure sensor for last too. leave all fittings loose until time for the final tightening. hit the lower condenser mount bolts, the upper brackets, THEN the fittings.
use 3' of string and feed it above and behind the air pump and tie to the a/c power wire. you can then do a pull through operation as the compressor is raised.
it was helpful to use a threadfile (snap-on $25) on the aluminum fittings bolted to the top of the compressor. don't x-thread.
a 6-8 on the PITA scale so far. don't do this with only the tools in your trunk, ha ha ha.
stay tuned for the special trick of attaching the front lines to the expansion valve then bolting the box back to the evaporator fittings with room to spare using a custom ground, ultra-sano, sacrifice 19mm box-end.
the compressor becomes real heavy when the time comes to bolt it back up, also real ungainly with the two hoses clamped to it.
speaking of hoses, they superceded the pressure hose from the compressor to the inlet (top) of the condenser. the part that snakes past the right side of the radiator used to be rubber hose and was easy to thread up. now, that part is a metal line with about 4 different bends in it. TIP: don't attach the condenser to the body until all the lines are hooked up. save the pressure sensor for last too. leave all fittings loose until time for the final tightening. hit the lower condenser mount bolts, the upper brackets, THEN the fittings.
use 3' of string and feed it above and behind the air pump and tie to the a/c power wire. you can then do a pull through operation as the compressor is raised.
it was helpful to use a threadfile (snap-on $25) on the aluminum fittings bolted to the top of the compressor. don't x-thread.
a 6-8 on the PITA scale so far. don't do this with only the tools in your trunk, ha ha ha.
stay tuned for the special trick of attaching the front lines to the expansion valve then bolting the box back to the evaporator fittings with room to spare using a custom ground, ultra-sano, sacrifice 19mm box-end.
03-09-2002, 03:35 AM
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In a "previous life" I fielded a VW Corrado VR6 on the battlefield-like streets of Orlando.
I say this because "Jett Lag" got the living hell beat out of it by a trans am tonight; turns out the guy had tons of mods...I don't feel so bad.
Besides, those things look like the batmobile.
Anyway, being somewhat of a lightweight, I don't sweat and usually do not use my air conditioner, prefering the ambience of the wind in my hair. The 928 has a really kewl feature- the only car you can open the windows in and not have your hair blown all over the place.
-Thus, I logged many hours of Corradoage without the compressor running. In fact, I bet I turned the system on about 5 times per year, even in Orlando.
After about 3 years of this, the system stopped working. Diagnosis: failed compressor due to lack of lubrication.
It seems that these things need to run now and then. If not they lose their lube and burn themselves out when you do turn them on, or the seals get brittle and you lose your gas. Moral of the story...if you own a machine, use it once in a while. I even use my dishwasher now as a result.
NOW...I am quite the exception- I estimate that Florida's population of 16 million people would probably drop to 1/3 of that if air conditioning disappeared. Gawd...I might make a few of the lights! But most people need to have a/c in their cars. And most people driving 928's are not in Florida...in fact many are in places like Seattle [ice storm today] or Michigan or New Hampshire or Belgium...etc. where the weather is cold many months of the year. People in this situation should do what I do...
My street is about 1/4 mile long, and forms a cul de sac. I live near the end. No matter what the outside temp [and it does get cold here occasionally], I run the air conditioner for the few moments it takes me to reach Hoffner, the main road near my house. This circulates the oil and lubricates the compressor. Those of you in Northern climes should adapt this procedure so that your compressors survive longer. Many of you may not use your a/c for over 6 months...
Not good....
Anyway- my advice.
Normy!
'85 S2 black/champagne
1980 Jetta 2-door
1976 Honda CB-750-4
1966 Ford F100
I say this because "Jett Lag" got the living hell beat out of it by a trans am tonight; turns out the guy had tons of mods...I don't feel so bad.
Besides, those things look like the batmobile.
Anyway, being somewhat of a lightweight, I don't sweat and usually do not use my air conditioner, prefering the ambience of the wind in my hair. The 928 has a really kewl feature- the only car you can open the windows in and not have your hair blown all over the place.
-Thus, I logged many hours of Corradoage without the compressor running. In fact, I bet I turned the system on about 5 times per year, even in Orlando.
After about 3 years of this, the system stopped working. Diagnosis: failed compressor due to lack of lubrication.
It seems that these things need to run now and then. If not they lose their lube and burn themselves out when you do turn them on, or the seals get brittle and you lose your gas. Moral of the story...if you own a machine, use it once in a while. I even use my dishwasher now as a result.
NOW...I am quite the exception- I estimate that Florida's population of 16 million people would probably drop to 1/3 of that if air conditioning disappeared. Gawd...I might make a few of the lights! But most people need to have a/c in their cars. And most people driving 928's are not in Florida...in fact many are in places like Seattle [ice storm today] or Michigan or New Hampshire or Belgium...etc. where the weather is cold many months of the year. People in this situation should do what I do...
My street is about 1/4 mile long, and forms a cul de sac. I live near the end. No matter what the outside temp [and it does get cold here occasionally], I run the air conditioner for the few moments it takes me to reach Hoffner, the main road near my house. This circulates the oil and lubricates the compressor. Those of you in Northern climes should adapt this procedure so that your compressors survive longer. Many of you may not use your a/c for over 6 months...
Not good....
Anyway- my advice.
Normy!
'85 S2 black/champagne
1980 Jetta 2-door
1976 Honda CB-750-4
1966 Ford F100
03-10-2002, 10:35 AM
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save time from the start: remove your hood and heater core hoses to gain room to work. hood removal can be a one-person operation by putting a towel under the rear portion and a dowel or broomstick propped under the front. when you reinstall the hood, during the alignment iterations, the shocks must be attached for proper leveling at the rear corners.
prior to expansion valve installation, bring all the lines together without the valve and check for alignment (tweaked lines). now is the time to bend accordingly. then install the valve.
dust off your favorite swear words, they will be used a lot. wonder why you ever bought a 928.
prior to expansion valve installation, bring all the lines together without the valve and check for alignment (tweaked lines). now is the time to bend accordingly. then install the valve.
dust off your favorite swear words, they will be used a lot. wonder why you ever bought a 928.