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spanky
spanky, Journeyman
Category: Heavy Equipment
Satisfied Customers: 2516
Experience:  I have 30yrs Experience in semi-trucks,Cat,Cummins,Detroit
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I'm working on a 950g series two loader serial ays the

Customer Question

I'm working on a 950g series two loader serial ays the ac blows hot ac pressure is on low side 40 psi and 180 at 80 degrees outside tempature I change ac compressor cut in cut out switch and accumulator what should I do
Submitted: 1 year ago.
Category: Heavy Equipment
Expert:  catmastertech replied 1 year ago.

Replace orifice tube and check for correct freon level. The cab should have a tag inside showing the correct kg (not pounds) amount.

Customer: replied 1 year ago.
I replaced the receiver dryer office tube is in the dryer
Customer: replied 1 year ago.
I put 3.75 pounds of freon according to sis
Expert:  catmastertech replied 1 year ago.

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.

Expert:  spanky replied 1 year ago.

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.

Customer: replied 1 year ago.
Temp is about 80 degrees on vents
Expert:  spanky replied 1 year ago.

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.

Talk later

Expert:  spanky replied 1 year ago.

How did ac turn out?

Expert:  spanky replied 1 year ago.

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.
Thanks
spanky

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