I am running a CUCV 6.2L diesel converted to 12v. so left alt is removed. Power steering is PSC pump in factory mount. I have one belt running pump. It used to have two. Thinking that the different sized pulleys might be a problem to put center belt on pump with out the alt.
CK5
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V belts are the bane of my existence
- Thread starter ridenby
- Start date
i dont know if the dia is the same but some early 80's sbc v8 with a/c got 2 groove same size both p/s pulley .
and maybe look for 87 sbc c/k trucks . they had vbelt and serp on alt . could possible use there water pump pulley to get you the v-belts you want and upgrade the alt with serp and use the serp pulley on your alt .
but who knows on all the spacing .
and maybe look for 87 sbc c/k trucks . they had vbelt and serp on alt . could possible use there water pump pulley to get you the v-belts you want and upgrade the alt with serp and use the serp pulley on your alt .
but who knows on all the spacing .
Both my '82 K2500 and '85 K10 Suburban with 6.2's have only one P/S belt,despite the fact the pump on both have 2 sheaves..and the Burb had A/C,I think the A/C belt may have used the outer sheave on the P/S pump..the compressor and some other parts have been removed,and I put a Fisher plow pump in the spot the A/C pump would have been..
I too have an 86 M1009 that i converted to 12 volt.
Originally i removed the driverside Alternator.
Powersteering would squeal off road without the second belt.
So i put the alternator back and wired it in parallel with the other one.
What happens is the alternator with the lowest set pont will do the work and the other will spin without charging.
What happens is after start up, when glow plugs are in after glow, or when using my winch, the second alt comes online and helps charge.
The only down side is that the gen light will glow faintly on that second alt most of the time, because it only chages when there is a big load.
Been working fine this way for a year.
Originally i removed the driverside Alternator.
Powersteering would squeal off road without the second belt.
So i put the alternator back and wired it in parallel with the other one.
What happens is the alternator with the lowest set pont will do the work and the other will spin without charging.
What happens is after start up, when glow plugs are in after glow, or when using my winch, the second alt comes online and helps charge.
The only down side is that the gen light will glow faintly on that second alt most of the time, because it only chages when there is a big load.
Been working fine this way for a year.
Oh yeah, you are gonna have to ground both alternators.
Cucv alts were isolated ground.. that is how they stacked voltages to get 24v.
Just ground them to the engine block.
Send both positives to your batteries which are now in parralel also.
Cucv alts were isolated ground.. that is how they stacked voltages to get 24v.
Just ground them to the engine block.
Send both positives to your batteries which are now in parralel also.
It's not a problem running the pump without the alt, you just need a shorter belt. What matters is just that the two sets of sheaves have the same size ratios. You already know this is true because you used to run both belts when the alt was there. But removing the alt didn't change the pulleys (unless I missed something).
Let me know if you want to sell the bracketry from the old alt setup.
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I am going to remount the alt, run it as K5wrench suggests. It did not squeal before conversion...not much anyway.
You could try running a wider 1/2" belt instead of a 3/8" wide belt...if you are not already doing that.
Anybody ever try a Kevlar belt on an alternator? My air compressor would chew up an auto V-belt (due to slipping) in a couple months. I bought a good kevlar machine belt and it looks new a year later with no re-tightening.
I have used a few Kevlar belts on some vehicles,only because I have many I bought in bulk at an auction for doing riding mower repairs (and despite having 200+ of them,I never seem to have the one I need!..
)..
I tried one on my 6.2 diesel,the alternator belt always screeched like mad after a cold start for several minutes--it didn't make a peep with a kevlar belt,and didn't seem to flap around like the original belt did (even when I tightened the crap out of it--I put it back to 1" of deflection before it ate the water pump bearings).
Unfortunately I used a 1/2" V belt (a 4L480),and it sat too high in the alternator pulley,but fit decent in the engine pulleys --eventually the alternator pulley ate into the "V" near the top pf the belt and the whole top of the belt came off in one piece and wrapped around all the pulleys and jammed them up..if I had a 3/8" kevlar belt it may have been OK,or a alternator pulley with a wider sheave..the original GM oem belts are usually 7/16" wide..
I have seen some pulleys on C-60's alternators that took a wider belt at a salvage yard,I was going to buy one,but they wanted $50 for the whole alternator,they wouldn't sell me the pulley alone..so I went back to a "stock" Gates belt...
Kevlar is very tough cordage,and it is a must to use a Kevlar belt on anything that has an idler pulley,especially one that rides on the back side and uses the V-belt as a clutch like a lawn tractor drive belt or deck belt..other "regular" belts fail pretty rapidly under those types of uses..
)..I tried one on my 6.2 diesel,the alternator belt always screeched like mad after a cold start for several minutes--it didn't make a peep with a kevlar belt,and didn't seem to flap around like the original belt did (even when I tightened the crap out of it--I put it back to 1" of deflection before it ate the water pump bearings).
Unfortunately I used a 1/2" V belt (a 4L480),and it sat too high in the alternator pulley,but fit decent in the engine pulleys --eventually the alternator pulley ate into the "V" near the top pf the belt and the whole top of the belt came off in one piece and wrapped around all the pulleys and jammed them up..if I had a 3/8" kevlar belt it may have been OK,or a alternator pulley with a wider sheave..the original GM oem belts are usually 7/16" wide..
I have seen some pulleys on C-60's alternators that took a wider belt at a salvage yard,I was going to buy one,but they wanted $50 for the whole alternator,they wouldn't sell me the pulley alone..so I went back to a "stock" Gates belt...
Kevlar is very tough cordage,and it is a must to use a Kevlar belt on anything that has an idler pulley,especially one that rides on the back side and uses the V-belt as a clutch like a lawn tractor drive belt or deck belt..other "regular" belts fail pretty rapidly under those types of uses..
