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Old 02-18-2013, 04:50 PM   #1
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Water pump belt adjustment bolt

Oh boy! Went to tighten water pump belt and broke off the pivot bolt, looks like I got my work cut out to get it out. I was wondering if a guy could put a stud bolt with a nut instead of the bolt. A guy could anti-sieze the nut and it might be a better set-up. Just looking for thoughts on this. Jim
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Old 02-19-2013, 04:09 AM   #2
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Uhm.... That belt isn't on a tension/idler? If so.. wondering why you were tightening the tensioner center bolt..
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Old 02-19-2013, 12:58 PM   #3
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Installing a stud should work just fine .
Check out
CAT 3126B water pump tensioner bolts
By TSchmelt
currently on page 3 of this forum for a discription of his fun with a rear rad.
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Old 02-20-2013, 04:54 PM   #4
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The water pump belt is not on a tensioner, it is a swing arm type. One end has a pivot bolt and the other end has a slot that a bolt slides through. You loosen both and pivot it until the belt is tight and then tighten both bolts. Jim
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Old 02-20-2013, 05:41 PM   #5
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94-Newmar has a Cummins , and his water pump is driven by the serp belt.
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Old 02-21-2013, 04:56 PM   #6
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Quote:
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94-Newmar has a Cummins , and his water pump is driven by the serp belt.
You might be right but he says he has a CAT 330.
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Old 02-22-2013, 08:55 AM   #7
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Quote:
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You might be right but he says he has a CAT 330.
I was going by his signature ; 8.3 Cummins 300hp.
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Old 02-22-2013, 10:00 AM   #8
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Quote:
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I was going by his signature ; 8.3 Cummins 300hp.

You are correct. We are looking at different posts. I was thinking about post 1 and you were commenting on post 2.
Bob
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Old 02-28-2013, 10:58 AM   #9
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The OP has a Cat per post #1. I am very familiar with that bolt. Nearly impossible to get a wrench on it. I had a loose belt and with a tool box full from working as a mechanic for years I didn't have a tool that would get on it. Took it to the Cat shop and had them adjust it.

Jim
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