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Allis Chalmers Discussion Forum
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B water pump - how does pulley come off?

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campbem

08-06-2004 11:57:44




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I'm pulling my water pump for replacement and am to the part of taking the pulley off. The pump is still on the tractor. How does the pulley attach onto the pump? Is it a conical taper type fit? Will heating the pulley area help with getting it off? Or is it attached some other way? I do have the fan blades removed.

I sure don't want to damage my pulley so any advice would be appreciated.

Matt

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Gene

08-06-2004 12:13:15




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 Re: B water pump - how does pulley come off? in reply to campbem, 08-06-2004 11:57:44  
If yours is like most. Remove the four bolts holding the fan blade to the pulley. Remove the fan blade. Loosen the pulley from the pump, rap gently (wood) to get the pulley to move. You may need to hold the shaft coming out the front of the water pump - turn the pulley about 1/4 turn - You need to line up the bolts holding the pulley (belt adjustment) with sections removed from portions of the water pump that the four fan bolts fit into.

Don't beat the pulley off. Just work it back and forth gently. If you get the water pump off the tractor, look on the back side of the pulley and you may be able to see how thing fit together.

Just turn the pulley on the water pump shaft until the bolts line up and pull - it will come apart.

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Dick L

08-06-2004 12:57:22




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 Re: B water pump - how does pulley come off? in reply to Gene, 08-06-2004 12:13:15  
Gene your right but I have had several that was rusted fast to the shaft and after a squirt or two of WD40 it still had to be tinked on the back side with a hammer to break it loose. Ya don't need to tink it hard enough to bend it though.



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campbem

08-06-2004 13:34:00




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 Re: B water pump - how does pulley come off? in reply to Dick L, 08-06-2004 12:57:22  
OK, its off now. Thanks.

One other question - mine is the style with the 4 "points" on the pulley mount area. Is this interchangeable with the cheaper priced round surface water pump? Assuming not, but its worth asking as they are priced $20-30 more.

Thanks.
Matt



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Gene

08-06-2004 21:48:08




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 Re: B water pump - how does pulley come off? in reply to campbem, 08-06-2004 13:34:00  
You would have to remove the two belt adjusting bolts from the pulley then slide the pully onto the mount. I don't know if you can get the two belt adjusting bolts back in their holes with the full round pully mount. I'd spend the extra $20.oo or so dollars.

The last two rebuilt water pumps purchased, within the past year, for a WC and a WD, came from a Federated Auto Parts store. $35.00 each and exchange. You might want to shop around.

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campbem

08-07-2004 05:45:00




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 Re: B water pump - shopping for one in reply to Gene, 08-06-2004 21:48:08  
Gene -

Been trying to shop around, but so far all I've found is what's on web (~$80) or places that won't tell me how much they'll charge to bebuild it (NAPA). Hard to gamble on a rebuild when they won't even give you a cost. I'll keep looking around, but so far my options seem limited to $80 or higher.

If anyone has a source please let the cat out of the bag. Heck, you'd think I was buying a water pump for a Mercedes!

Thanks again, Matt

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Gene

08-07-2004 10:17:00




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 Re: B water pump - shopping for one in reply to campbem, 08-07-2004 05:45:00  
$107.50 from Federated Auto Parts. Checked the price this morning. Parts man explained that their supplier of low cost tractor parts went out of business. Don't know what else to say, but a 250% price jump in tractor parts is REALLY GOING TO HURT.



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WR

08-07-2004 23:37:48




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 Re: B water pump - shopping for one in reply to Gene, 08-07-2004 10:17:00  
How does one go about rebuilding the pump?



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Gene

08-08-2004 17:51:40




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 Re: B water pump - shopping for one in reply to WR, 08-07-2004 23:37:48  
They sold water pump rebuild kits, 30 - 40 years ago, for the home mechanic. Never rebuilt on myself but don't think it would be a major undertaking if you could get the seals and bearings.



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campbem

08-08-2004 06:01:59




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 Re: B water pump - shopping for one in reply to WR, 08-07-2004 23:37:48  
If you mean by yourself, I would say obviously you'd need the tools and material. As for taking it somewhere, NAPA won't tell me anything price-wise except to say that it'd probably be the same cost as their reman. unit (~$80). So why go to the trouble of sending your old on out, waiting, then finally getting it back? Just as easy to buy what they have in stock.

Yes, it hurts, but it hurts even more having my B out of commission. I was also hoping to get a new temp gauge while I was working on the pump, but that will have to wait now.

Matt

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