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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 2108
Experience:  Owner at DJ Wilson
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I working in trailer with carrier unit extra,when I put the

Customer Question

I working in trailer with carrier unit extra,when I put the manifold gauges,low side is 200 and high side is the same pressure 200
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 1 year ago.

Hi I'm Wayne

I will help you with this

your pressure readings is this unit off ??

or running

Customer: replied 1 year ago.

unit running.

Customer: replied 1 year ago.


Expert:  Wayne replied 1 year ago.

Hi Thank you for that

if both pressures are the same,

that is saying that your throttling valve or unloader in the head is bad,

when did this start

Customer: replied 1 year ago.

we replaced the compressor seal

Expert:  Wayne replied 1 year ago.


What compressor seal ??

Customer: replied 1 year ago.

shaft seal, we trie with other compressor and with have the same problem,

Expert:  Wayne replied 1 year ago.


I have worked on , at TK, Carrier for 34+ years

your front seal has no issue what your problem

that was a waste of time and money

Customer: replied 1 year ago.

I replaced the seal because was leaking

Expert:  Wayne replied 1 year ago.


Still the fact remains,

has no issue what your pressures being equal

front seal just leaks out Freon

I suggest to replace the throttling vale

and head unloaders

Customer: replied 1 year ago.


Expert:  tkman55 replied 1 year ago.

Hi my Name Don are you still in need of help? first check to see if the compressor coupler hasn't stripped out and that the compressor is actually turning. if the pressures are the same on both sides while running and the compressor is turning the compressor has failed and is no longer pumping Freon. Try pumping down the low side front seat the suction service valve ( turn all the way in) and run unit if the unit is still close to the hi side value then the compressor valves are bad