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Username Post: compressor swap        (Topic#349558)
995jim 
Contributor
Posts: 416
995jim
Loc: Ohio
Reg: 12-17-06
02-07-18 04:45 PM - Post#2723678    

Hi, does anyone know if I can swap a 89 k1500 ac compressor with a 95 k1500 compressor ? They look similar. Also is there a certain volume of oil to be in a compressor and what kind of oil is it. My compressor is currently making a constant wooooshing noise to varying degrees and I am worried it may freeze up at some point thus trashing the serp belt
thanks jim

Jim

65' Impala SS, 65' Belair, 89' Silverado Z71, 95' Silverado Z71, 12' Silverado, 15' Silverado LTZ, 16' Tahoe LTZ


 
thx1138v2 
Contributor
Posts: 137

Reg: 05-01-14
02-07-18 05:12 PM - Post#2723682    
    In response to 995jim

'89 is probably R12 and '95 is probably R134a. You need to check that first.



 
rockfangd 
"5th Year" Gold Supporting Member
Posts: 2368
rockfangd
Age: 32
Loc: Utica ny
Reg: 04-13-10
02-07-18 06:54 PM - Post#2723694    
    In response to thx1138v2

refrigerant wont make a difference.
People convert r12 to R134A without issue.
I am not sure about the swap.
A quick interchange shows 1988-1992.
Check the pulleys, mounting, and line port connections. If they are all the same I say go for it.


Old School GM fan FOREVER


Edited by rockfangd on 02-07-18 06:58 PM. Reason for edit: No reason given.

 
995jim 
Contributor
Posts: 416
995jim
Loc: Ohio
Reg: 12-17-06
02-08-18 02:38 PM - Post#2723775    
    In response to thx1138v2

it was converted to 134a a while back , but is there a certain quantity of oil I need to add if it fits ?
thanks jim

Jim

65' Impala SS, 65' Belair, 89' Silverado Z71, 95' Silverado Z71, 12' Silverado, 15' Silverado LTZ, 16' Tahoe LTZ


 
someotherguy 
Moderator
Posts: 28656
someotherguy
Age: 48
Loc: Texas
Reg: 08-01-03
02-08-18 04:20 PM - Post#2723791    
    In response to 995jim

Sounds like you're swapping on a used compressor, and that's why the question about year?

Remove old compressor, pour oil into a measuring cup.

Before installing new (or used) compressor, pour its oil out as well - and install same amount you removed from the old one.

However, if your compressor has failed, the system likely needs a full flush and the orifice tube replaced. At that point you'll need a full oil fill which will require looking up your particular vehicle to see how much.

Also, I would strongly recommend against installing a used compressor. Or even a rebuilt, for that matter.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
thx1138v2 
Contributor
Posts: 137

Reg: 05-01-14
02-10-18 08:30 AM - Post#2723941    
    In response to 995jim

This is what I put in my '94 C1500:

8 Ounces PAG 150 oil

4 oz in compressor. If compressor already has oil add ONLY the amount needed to complete 4 oz

4 oz in dryer. Put 4 oz oil into INLET SIDE of dryer.



 
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