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CAT 3116 A/C pully not really needed? LMTV FMTV

Ronmar

Well-known member
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My understanding was that he did it both ways without issue. He showed both ways for the benefit of viewers. Did he say he had issues with hydraulic??
He blew up his steering box, literally... Split the case from top to bottom due to excessive hydraulic pressure... He got it working eventually, but I would pose the question, while driving 10 tons of minivan killing death on a stick down the highway, do you really want to add potential failure to the non-redundant steering system? There are safer ways to do this IMO...

Someone was nice enough to provide a bracket to him to make the change to belt drive and he did...
 

m-35tom

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Supporting Vendor
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eldersburg maryland
He blew up his steering box, literally... Split the case from top to bottom due to excessive hydraulic pressure... He got it working eventually, but I would pose the question, while driving 10 tons of minivan killing death on a stick down the highway, do you really want to add potential failure to the non-redundant steering system? There are safer ways to do this IMO...


Someone was nice enough to provide a bracket to him to make the change to belt drive and he did...
Because he didn't have a clue about hydraulics. A proper priority valve with a pressure relief would have been fine. But I agree a belt is best.
 

Reworked LMTV

Well-known member
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Location
TN
He blew up his steering box, literally... Split the case from top to bottom due to excessive hydraulic pressure... He got it working eventually, but I would pose the question, while driving 10 tons of minivan killing death on a stick down the highway, do you really want to add potential failure to the non-redundant steering system? There are safer ways to do this IMO.
Someone was nice enough to provide a bracket to him to make the change to belt drive and he did...
Well, he had a plumbing issue and inexperience with hydraulics. You don't have to run the power steering and a/c pump in tandem and I would not do it. I still think it is an interesting idea.
 

Ronmar

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Port angeles wa
Yea, it was interesting and he said he learned a lot from it. Perhaps if it was done off of the transmission PTO or some other standalone hydraulic pump, but I think there is too much risk/liability mixing it with the steering.
 

ramdough

Well-known member
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Location
Austin, Texas
298-1308 special order
Is that for a 3116, 3126, and c7? The cat website lists that one for C7, but does not mention the other engines.

I did a search and found this one 106-7404 but not sure if that is correct one for an ac compressor. It is for a 3116 and 3126E.

On a side note, I like the dual belt pulleys better because it gives you options for one or two belts.



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Last edited:

farmerklaassen

New member
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Rogers, AR
I did not mean that the tire would touch, I was talking about the mud, rocks, and general off road wet conditions. I live in the country on dirt roads and commonly drive my truck as a daily driver in all conditions.
 

farmerklaassen

New member
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Location
Rogers, AR
The wheel can not even touch it even at max turn and articulation up. Truck goes offroad alot as is. You could always choose a smaller compressor of your choice
I did not mean that the tire would touch, I was talking about the mud, rocks, and general off road wet conditions. I live in the country on dirt roads and commonly drive my truck as a daily driver in all conditions.
 

simp5782

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Mason, TN
I did not mean that the tire would touch, I was talking about the mud, rocks, and general off road wet conditions. I live in the country on dirt roads and commonly drive my truck as a daily driver in all conditions.
Then add a rubber shield or flap around it. That is a simple fix. The inner fender liners near cover it up but additional drapery wouldnt be hard.
 

ramdough

Well-known member
1,554
1,727
113
Location
Austin, Texas
Is that for a 3116, 3126, and c7? The cat website lists that one for C7, but does not mention the other engines.

I did a search and found this one 106-7404 but not sure if that is correct one for an ac compressor. It is for a 3116 and 3126E.

On a side note, I like the dual belt pulleys better because it gives you options for one or two belts.



Sent from my iPad using Tapatalk
Anyone know the answer to these questions?


Sent from my iPad using Tapatalk
 

scottmandu

Active member
822
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28
Location
Texas
Nope the belt would slip on the driving pulley with that little wrap around. It might be possible with the serpentine arrangement but not V belts. You also don't want to tension V belts on the back side.
 
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