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cat d5k2 ac problem

truecountry

Senior Member
Joined
Sep 24, 2007
Messages
410
Location
clarksville va
Occupation
Shop Manager and Tech
Hi guys i got a tough one ....ac wasnt cooling found the low pressure line at compressor had come apart inside and had a lot of holes in it replaced and still has a leak ....will not hold a vacuum ...but if i pressurized system with 100psi shop air it will hold it all day ??????????reason i use shop air i can soak lines down with soapy water and look for leaks yall all know how they run these crazy lines everywhere ..that being said i pull the orface tube and it was full of inside of hose ..changed it out and pulled a vacuum and drops in 20secs ...can the compressor be the leak ...under vacuum but not in pressure ? vin is kyy01638 in think thats right
 

swampman

Well-Known Member
Joined
Mar 2, 2010
Messages
57
Location
MS
You need to change filter/dryer and flush all lines, evap core, etc, before even thinking about charging the system again. I'll bet you my paycheck you have a blockage somewhere.
 

JD955SC

Senior Member
Joined
Mar 13, 2011
Messages
1,357
Location
The South
You need to change filter/dryer and flush all lines, evap core, etc, before even thinking about charging the system again. I'll bet you my paycheck you have a blockage somewhere.

that condenser is definitely clogged with debris that large
 

ianjoub

Senior Member
Joined
Jun 22, 2018
Messages
1,472
Location
Homosassa, FL USA
Must flush the entire system. When reassembling, use new o-rings and gaskets everywhere. Change the orifice tube and receiver/drier or accumulator. Clean the outside of the condenser and evaporator coil as well as the inside flush. Once all that is done you can check to see if it holds vacuum.

Check with a vendor on the condenser. If it is a parallel flow, there is no flushing it, it must be replaced.
 
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