230 water pump

tntleake · Jan 2, 2013

I'm installing a new water pump on a 230 I recently purchased. How in the heck do I get the fan to slide down to remove belt/pump. I got a 5/8" wrench on the shaft behind the pulley, but can't get the 15/16" nut to budge on the back. Thought i'd ask before I break something. Have everything, except fan out of the way. Going to have radiator roded before reinstalling.
Any good flush I can put in the block to loosen/flush block? Thought I could cap the old water pump, locked up, and fill the block and let it set while waiting on the radiator to get back.
Thanks
Tracy

LMack · Jan 2, 2013

The nut does not turn. You have to turn the 5/8" bolt on the front. The bolt on the back fits in a grove so that it will not turn at first. You can use one wrench to loosen the 5/8" until it has so much slop that the inside nut starts turning. You will need to use two wrenches at that point. It goes back the same way. At some point the rear nut will grip the grove and you will only need a wrench on the front nut. One of your other hands (I am serious) will be on the crow bar you are using to tension the belt. Use the rear nut as a lift point for the crow bar across the governor housing. Make sure the threads in the nut and on the shaft are clean. I would suggest running a tap into the nut and a threading die over the bolt threads. They need to turn easily and have a little oil when you reinstall. You have to get the 5/8" very tight or the fan pulley will simply drop down when it gets hot.

wolfman · Jan 2, 2013

I don't think the 15/16" nut is supposed to turn. Loosen other end and everything slides down in a groove... I kind of forget - replaced the water pump twice since 1957, but not recently.

BOB HAWBECKER · Jan 2, 2013

sorta like a tee bolt
it rides in a channel

tntleake · Jan 3, 2013

Got it
Thanks for the help
Tracy

230 water pump

tntleake

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LMack

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wolfman

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tntleake

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