Heavy Equipment Repair Questions? Ask an Expert Now.
Replace orifice tube and check for correct freon level. The cab should have a tag inside showing the correct kg (not pounds) amount.
Ok, your right. I had a 938G on my mind.
Sounds like a bad compressor. I don't get to do much AC work anymore so, I will OPT-out and let others see your question. Maybe someone else has better experience than I do.
Hopeful another expert will pickup your question soon.
I agree with catmastertech, your low side reading is high and high side reading is low which does point to ac compressor.
Make sure you are getting no coolant flow through heater core,close off valves if you have them and crimp heater hose with needle vise grips in case valves are bad,
Make sure radiator and condenser are clear and all belts are tight,
How is air flow coming out vents? Good/normal or low
What temp does it get down to? You say its hot but I always like to start with a temp to verify repairs.
As long as you evacuated the ac system down (I'm pretty sure you did) before charging you need a ac compressor, as long as ac clutch is not cycling on/off. If clutch is cycling on/off you would have another issue.
I'm going to be out for awhile but I will check back in when I get home to see if you need anything else or the results after changing compressor or you have other info I need to review.
How did ac turn out?
I'm just following up to see if we resolved the issue or you need more info.I would appreciate a reply so I know you are happy with my assistance.Thanksspanky