A/C Compressor finding the right one.
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A/C Compressor finding the right one.
I have a F250 made in July 94 believe to be the 94.5 Model 1st gen Power Stroke.
The NAPA store ordered me a a/c comp but had 6 grooves that didn't fit the belt too well. Then they ordered me a 8 groove and after looking and counting the grooves on the compressor founr out it has 7 grooves.
Anyone else have 7 grooves instead of the 6 or 8 on their belt.
Also wondering where I'd buy a a/c compressor that the pulley would be 7 grooves if anyone may know.
Thanks for any help on this.
The NAPA store ordered me a a/c comp but had 6 grooves that didn't fit the belt too well. Then they ordered me a 8 groove and after looking and counting the grooves on the compressor founr out it has 7 grooves.
Anyone else have 7 grooves instead of the 6 or 8 on their belt.
Also wondering where I'd buy a a/c compressor that the pulley would be 7 grooves if anyone may know.
Thanks for any help on this.
Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
Sometimes they [who?] will install a pulley with an extra groove that is not necessary. It allows for a bit of fore-and-aft adjustment, with the belt running in the front groove or running in the back. That is what I have on my after market Seltec. There is one extra groove...
Yours may be the same. But, ackits.com is a good source, as is AAPAK
Both are willing to talk to their customers.
tom
Yours may be the same. But, ackits.com is a good source, as is AAPAK
Both are willing to talk to their customers.
tom
Thread Starter
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Senior User
Joined: Oct 2005
Posts: 419
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Sometimes they [who?] will install a pulley with an extra groove that is not necessary. It allows for a bit of fore-and-aft adjustment, with the belt running in the front groove or running in the back. That is what I have on my after market Seltec. There is one extra groove...
Yours may be the same. But, ackits.com is a good source, as is AAPAK
Both are willing to talk to their customers.
tom
Yours may be the same. But, ackits.com is a good source, as is AAPAK
Both are willing to talk to their customers.
tom
So going out to try it out and was also told to put the belt in the last groove so there's an extra one up front vice the rear or the pulley.
Thanks for you help
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Got it all back together last night took it to get evacuated and recharged. The pressure check went well.
The high side went to 450psi quickly. The guy at the service station said it should be about 400psi.
Just wondering if anyone knows if that's normal or not since the truck doesn't get any hotter temp wise. The truck now cools down sitting in the yard in 80 deg weather down to 58 within 5 minutes.
This is on the F250 truck.
The high side went to 450psi quickly. The guy at the service station said it should be about 400psi.
Just wondering if anyone knows if that's normal or not since the truck doesn't get any hotter temp wise. The truck now cools down sitting in the yard in 80 deg weather down to 58 within 5 minutes.
This is on the F250 truck.
Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
What kind of compressor is it? Original style York? Or a newer design import?
The York worked pretty well with R12, as a truck made in 73 would have used, but not so great with R134a. Which refrigerant did you use? If you went with R134a, the 'rule of thumb' is 80-85% of the R12 charge amount is sufficient. No matter which refrigerant you used, did you do anything else to the system besides replace the compressor? If you used R134a, the dessicant in the receiver dryer or accumulator would have to be compatible, as would the compressor oil.
tom
The York worked pretty well with R12, as a truck made in 73 would have used, but not so great with R134a. Which refrigerant did you use? If you went with R134a, the 'rule of thumb' is 80-85% of the R12 charge amount is sufficient. No matter which refrigerant you used, did you do anything else to the system besides replace the compressor? If you used R134a, the dessicant in the receiver dryer or accumulator would have to be compatible, as would the compressor oil.
tom
Thread Starter
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Senior User
Joined: Oct 2005
Posts: 419
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What kind of compressor is it? Original style York? Or a newer design import?
The York worked pretty well with R12, as a truck made in 73 would have used, but not so great with R134a. Which refrigerant did you use? If you went with R134a, the 'rule of thumb' is 80-85% of the R12 charge amount is sufficient. No matter which refrigerant you used, did you do anything else to the system besides replace the compressor? If you used R134a, the dessicant in the receiver dryer or accumulator would have to be compatible, as would the compressor oil.
tom
The York worked pretty well with R12, as a truck made in 73 would have used, but not so great with R134a. Which refrigerant did you use? If you went with R134a, the 'rule of thumb' is 80-85% of the R12 charge amount is sufficient. No matter which refrigerant you used, did you do anything else to the system besides replace the compressor? If you used R134a, the dessicant in the receiver dryer or accumulator would have to be compatible, as would the compressor oil.
tom
I used R134a from WIX (brand). The truck had R134 in it from the factory originally. So now the 94 is a bit cooler inside!!!!
Thanks for the help hope this may help others who read this thread!!!!!!!!!!
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Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
Well, I guess I missed by a few years. Dunno where I got the idea it was a mid 70's vintage. Maybe your id.
Try putting a fan in front of the radiator and measure the hi pressure with the fan off and the fan on. If it makes a difference, you will know the reason. You will get higher pressure if the condenser cannot throw off the heat as fast. Check your fan clutch for looseness. They wear out. When you turn off the engine, when up to normal temperature, the fan should stop spinning almost immediately. Some recommend to replace them at about the 40k mile marker. Supposedly, you should be able to hear the 'whoosh' when the fan engages, warming up from a cold start.
tom
Try putting a fan in front of the radiator and measure the hi pressure with the fan off and the fan on. If it makes a difference, you will know the reason. You will get higher pressure if the condenser cannot throw off the heat as fast. Check your fan clutch for looseness. They wear out. When you turn off the engine, when up to normal temperature, the fan should stop spinning almost immediately. Some recommend to replace them at about the 40k mile marker. Supposedly, you should be able to hear the 'whoosh' when the fan engages, warming up from a cold start.
tom
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