Search found 157 matches

by ice-n-tropics
Sat May 19, 2018 9:49 am
Forum: Automotive Air Conditioning Forum
Topic: Stuck Compressor Clutch Plate: Suggestions on Removal
Replies: 27
Views: 33219

Re: Stuck Compressor Clutch Plate: Suggestions on Removal

Rotor pulley may need replacement because it appears to have a crispy friction liner with missing surface.
JohnHere Whata'youthink?
hotrodac
by ice-n-tropics
Sat May 19, 2018 9:32 am
Forum: Automotive Air Conditioning Forum
Topic: AC accumulator draining too fast, high hi side
Replies: 5
Views: 5795

Re: AC accumulator draining too fast, high hi side

Think you have a TRSA105 scroll compressor which normally causes gage indicator bouncing on the high pressure gage due to one discharge pulsation per revolution. Pressure data could be normal if ambient temps align. TPS (compressor thermal protection switch) seems ok becuse neuisance cycling seems t...
by ice-n-tropics
Wed May 16, 2018 2:15 pm
Forum: Automotive Air Conditioning Forum
Topic: 1999 Mack MR688S inefficiency
Replies: 4
Views: 6074

Re: 1999 Mack MR688S inefficiency

Your problem is typical of older trucks that have had several compressors changed without flushing old oil out of the system. oil insulates the internal surfaces of both heat exchangers and reduces heat transfer. Typically truck systems have 8 + ounces of oil and replacement compressors come with a ...
by ice-n-tropics
Sun May 13, 2018 2:36 pm
Forum: Automotive Air Conditioning Forum
Topic: Stuck Compressor Clutch Plate: Suggestions on Removal
Replies: 27
Views: 33219

Re: Stuck Compressor Clutch Plate: Suggestions on Removal

If you get the magnetic field coil out it likely has a one time thermal fuse buried in the winding and is not practical to repair. Failure root cause could be heat due to slippage from excessive air gap. Replacement coils, if avaliable cost almost as much as Tim's great better than new new knock off...
by ice-n-tropics
Sat May 12, 2018 2:21 pm
Forum: Automotive Air Conditioning Forum
Topic: Stuck Compressor Clutch Plate: Suggestions on Removal
Replies: 27
Views: 33219

Re: Stuck Compressor Clutch Plate: Suggestions on Removal

Just a guess,
Orange center looks like sintered bronze washer not a splined shaft. If so,strike the washer from the side and it may pop out, exposing the shaft. Reinsert the center bolt and lightly hit it.
hotrodac
by ice-n-tropics
Sat May 12, 2018 2:08 pm
Forum: Automotive Air Conditioning Forum
Topic: John E. Mitchell Allegro Mark IV Parts Source
Replies: 1
Views: 2839

Re: John E. Mitchell Allegro Mark IV Parts Source

Blower switch nut was overtightened and cracked Plexiglas. J & N auto air conditioning in Harlington TX has old Mark IV stuff. Hope this helps. After making all the drawings on the Allegro, I put one in my 56 Chevy PU and could hang meat in it. Problem the the back window frosted on the outside ...
by ice-n-tropics
Mon Apr 02, 2018 1:51 pm
Forum: Off Topic Chat
Topic: Mark IV Part Numbers Anyone ?
Replies: 1
Views: 23120

Re: Mark IV Part Numbers Anyone ?

MARk IV Unfortunately Auther (Butch) Smith, the photo memory parts coordinator, just passed on. Butch left John E. Mitchell Co., Inc. after 1974 , after me, to become Sanden VP. He always won at poker. Billy McGriff was the parts sales manager until the boss took his wife. Vince Heinz was export par...
by ice-n-tropics
Sat Feb 03, 2018 9:32 am
Forum: Automotive Air Conditioning Forum
Topic: PAG-oiled components in former mineral oil systems. Corrosion Issues?
Replies: 7
Views: 10225

Re: PAG-oiled components in former mineral oil systems. Corrosion Issues?

1) Residual R-12 is undesirable in A/C systems which have been retrofitted to R-134a and is evidenced by copper plating on steel parts and degraded oil. R-12 is miscible/absorbed into mineral oil and is only removed by lengthy deep vacuum or long atmosphere exposure. 2) Ester based oil was a better ...
by ice-n-tropics
Wed Nov 22, 2017 3:51 pm
Forum: Automotive Air Conditioning Forum
Topic: Two Condensers connected in series
Replies: 21
Views: 39760

Re: Two Condensers connected in series

Measured the air 6" off the asphalt in LV at 165F. OEMs often use belly pans these days to stop recirculated idle air. Bohica's PP experience for severe rare air and temp paramaters w/ turbo would be worth considering. So you are attempting 20 psi boost w/o a charge air cooler (CAC). Somewhat c...
by ice-n-tropics
Tue Nov 14, 2017 6:32 pm
Forum: Automotive Air Conditioning Forum
Topic: Two Condensers connected in series
Replies: 21
Views: 39760

Re: Two Condensers connected in series

As Bohica indicated the a CAC, a hefty charge air cooler, is pretty basic for your higher temp and pressure intake air if you expect that HP and any engine life. You said lower ram air is for the radiator which leaves upper ram air for CAC and then Radiator. But not enough height for condensers w/o ...