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Clutch Hubs And Pulleys For V5/V7

69Sixpackbee on Fri December 21, 2007 1:31 PM User is offline

Are the single groove clutch,pulley and hubs for the DA6/HR6 & R4 compressors the same that fit onto the V5/V7?

Thanx,

Bud Weaver

GM Tech on Fri December 21, 2007 8:57 PM User is offline

yes -- but older R-4s (Pre 1986) are not the same- they were 4-pole clutches- the newer ones are 6-pole

you can also add HT-6 to the "will fit" list == but clutches on V5 and V7 are balanced - have the "arrowhead" feature and keyway is oriented to the balanced feature-- but will probably not cause problems if you try a non-balanced clutch on a V5 or V7...

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

69Sixpackbee on Sat December 22, 2007 1:41 PM User is offline

Thanx, GM Tech!!

BTW, are the R134A control valves interchangeable with the R12 ones?

Happy Holidays!

Bud Weaver

Edited: Sat December 22, 2007 at 1:46 PM by 69Sixpackbee

Chick on Sat December 22, 2007 2:04 PM User is offlineView users profile

Yes, control valves interchange just fine. We see this problem with reman compressors using the old R12 valves, and not perfoming as well as they would with the R134a control valve... Switch the control valves and they work just fine...Hope this helps..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

bohica2xo on Sat December 22, 2007 2:13 PM User is offline

Bud:

The V5/V7 series is a very flexible compressor. Control valves are available with a wide range of pressures. Some V5's had Vee belt clutches, so a balanced clutch is available in that configuration.

B.

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"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

69Sixpackbee on Sat December 22, 2007 2:25 PM User is offline

You guys are the best!
I have been Googling ALOT and have come up with V5's that fit mid-80's small Caddies, Buick and Pontiacs that have the v-belt clutch pulleys. These have the front mount ears which would be a fairly easy swap-out with the Sanden. I could fab a flat cold rolled plate to mount on the front of this big block Chevy fairly easily. Mounting and plumbing is the easy part. The hard part is trying to figure out the oil and gas amount into this system. The Chevy trucks originally had an A6 with 3lbs4oz of R-12 in the factory Four Season system that they came with. My truck did not have the factory system, just the heater. I have since acquired all of the stuff to install it into this truck. I have been through a couple of iterations od aftermarket systems with "mixed" feelings about them. Nothing beats the factory engineered systems! When I put in the aftermarket system w/Sanden SD5H14 I ended up with 30 oz. of 134A. Now I am going to have to guesstimate the needed charge since there is nothing to really reference for a V5/V7 compressor swap from an A6 in a 1972 Chevy pickup.

I guess now I will have to S-L-O-W-L-Y add in a charge by weight and monitor the vent temps @2000 RPM until I derive a number for future reference.

Any suggestions?

Part of the *fun* of this type of retrofitting is improving and upgrading and seeing what I can achieve.

Thanx,
Bud

Edited: Sat December 22, 2007 at 2:45 PM by 69Sixpackbee

Chick on Sat December 22, 2007 4:55 PM User is offlineView users profile

One thing to remember, is they come in "many" mounting variations, but the "control valve" should always be in the 6 o'clock position, or as close to that as possible...

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

69Sixpackbee on Sat December 22, 2007 8:17 PM User is offline

A note well taken, Chick.
I will make sure.
Thanx Chick...
Happy Holidays!

Bud

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