Search found 59 matches

by swampy 6x6
Thu Feb 01, 2024 11:08 pm
Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
Topic: Flushing Solvent
Replies: 4
Views: 14400

Re: Flushing Solvent

hi Shellite X55,,, also called Recosol R55 essentially hydrocarbon or lighter fluid X55 mild degreaser can be used as a pre clean wipe prior to painting leaves no residue and 100% evaporates Also used as automotive hydraulic brake part cleaner After using flush blow thru with nitrogen .VS Using comp...
by swampy 6x6
Fri Dec 01, 2023 7:09 am
Forum: Automotive Air Conditioning Forum
Topic: wont hold vacum but will hold pressure
Replies: 7
Views: 7430

Re: wont hold vacum but will hold pressure

hi First look for obvious damage eg hose rub thru . Twist hose ferrules if they twist replace Look for oil stains on all a/c parts Has the system have leak dye might see compressor seal vacuum fluctuation reading on a micron gauge when clutch is rotated . or charge with a trace of refrigerant and to...
by swampy 6x6
Fri Nov 24, 2023 4:45 pm
Forum: Automotive Air Conditioning Forum
Topic: Receiver Filter Drier selection questions
Replies: 3
Views: 4988

Re: Receiver Filter Drier selection questions

hi R/drier will be ok a larger unit won`t hurt Remember the system = 2.6 ton Try and match compressor ,,evaporator txv from a known combo ,,Saves the guess work from having mismatched components engine drive pulley diameter can be varied a little Condenser size bigger the better . Remember to fit 2x...
by swampy 6x6
Fri Nov 24, 2023 2:07 pm
Forum: Automotive Air Conditioning Forum
Topic: Pulling Vacuum
Replies: 4
Views: 5955

Re: Pulling Vacuum

hi in hg is 29.92 = 100 microns 29.9 = 500 microns 29.88 =1000 microns 29.82 = 2500 microns 29.53 = 10,000 microns Many industrial/commercial compressors spec below 500 microns Anything with a shaft seal 1000 microns Above is with pump operating Leak decay/ vacuum rise should be little as possible ....
by swampy 6x6
Fri Nov 17, 2023 2:52 pm
Forum: Automotive Air Conditioning Forum
Topic: Can't figure out why I'm not getting cold air - compressor works and system is charged (I think).
Replies: 13
Views: 9631

Re: Can't figure out why I'm not getting cold air - compressor works and system is charged (I think).

hi Besides being low on refrigerant . Does your vehicle make/model have a cabin filter ?? If dirty change it out ,, if not the evaporator core will most likely be covered in debris . Any vehicle can have a dirty evap core as early as 60,000 miles . Some times it might be needed to drill a hole and u...
by swampy 6x6
Thu Nov 16, 2023 7:29 am
Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
Topic: Remember to service your tool ., s LOL
Replies: 0
Views: 10292

Remember to service your tool ., s LOL

Hi Its all about vacuum and how many microns you are are getting down to and how long you are staying there . 2 Areas tool vacuum leaks and evacuation setup LEAKS ===vacuum Buy a micron gauge Reseal manifolds with new o rings [use silicon grease OR di-electric grease ] and flush with liquid refriger...
by swampy 6x6
Wed Oct 25, 2023 8:21 pm
Forum: Automotive Air Conditioning Forum
Topic: Testing Micron gauges
Replies: 18
Views: 20579

Re: Testing Micron gauges

hi Early in the am probably tired . Experience with your own micron gauge goes along way . Once u have seen how the gauge responds to leaks of various causes eg r134a coupler or manifold o rings etc . First thing i do if gauge is not performing is to alcohol clean and retest . Once you become famili...
by swampy 6x6
Wed Oct 25, 2023 8:19 am
Forum: Automotive Air Conditioning Forum
Topic: Testing Micron gauges
Replies: 18
Views: 20579

Re: Testing Micron gauges

hi
Experience of your micron gauge for small leaks eg manifold o ring leak and what u would expect to see on the gauge to represent that
by swampy 6x6
Wed Oct 25, 2023 7:56 am
Forum: Automotive Air Conditioning Forum
Topic: Robinaire 2.2 cu in vac pump - repairable?
Replies: 5
Views: 4916

Re: Robinaire 2.2 cu in vac pump - repairable?

hi Tried recently to repair my old school Robin air USA made 2stage 5 cfm vac pump . Parts are no longer made . The complete alloy pump half is replaced . Considered age and I chose not to If u buy a non USA eg china buy a 6cfm 1/2hp 2stage. The 4cfm I purchased is slow to pull down vs my old school...
by swampy 6x6
Wed Oct 25, 2023 7:44 am
Forum: Automotive Air Conditioning Forum
Topic: Where is a micron gauge placed when vacuuming system?
Replies: 11
Views: 8874

Re: Where is a micron gauge placed when vacuuming system?

hi Always be observant when using vac pump . Look for fluctuations when operating taps .Also compare this to a new 1/4 hose with a micron gauge . If the readings are different the gauge set has a leak most likely . Vac both situations overnight to eliminate moisture as much as possible. If the micro...