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Farmall & IHC Tractors Discussion Forum
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How hot to heat crank pulley??

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RT (seTX)

09-16-2004 17:44:56




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I'm ready to install the crank pulley on my C123. How hot can I cook it without damaging the timing cover seal when I pull it onto the shaft?




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EZ

09-16-2004 19:10:00




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 Re: How hot to heat crank pulley?? in reply to RT (seTX), 09-16-2004 17:44:56  
It does not hurt to heat the pulley up some, but you don't want to get it boiling. I've been doing bearings in a pot of oil, heat it , but don't boil it. You don't want to damage the seal with too much heat either. Heat it up some and the oil will also help it sliding on, you will most likely have to help it near the end. Will you be using a threaded rod in the end of the crank to help push it on?

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RT (seTX)

09-16-2004 20:01:36




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 Re: How hot to heat crank pulley?? in reply to EZ, 09-16-2004 19:10:00  
Yes, my plan is to put an 8" all-thread into the end of the crank, put the pulley in place, and then pull it on with a large washer and coupling nut. Is this going to apply enough force or will I need to get the big hammer out?



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MN Scott

09-16-2004 20:35:44




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 Re: How hot to heat crank pulley?? in reply to RT (seTX), 09-16-2004 20:01:36  
Try to avoid the hammer if you can. When you pound on the pulley you impact the crank againest the main thust bearing. Clean the surfaces with emery cloth and heat and oil as others have said, the treaded rod should pull it on. If it will not go you can use a harmonic balancer installer. They have a one inch treaded shaft with thrust bearing and adapters to fit the crank treads. They will pull any pulley on.

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JBlavl

09-17-2004 06:19:40




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 Re: How hot to heat crank pulley?? in reply to MN Scott, 09-16-2004 20:35:44  
What size is the threads in the end of the crank? And are they fine thread?



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RT (seTX)

09-17-2004 08:43:25




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 Re: How hot to heat crank pulley?? in reply to JBlavl, 09-17-2004 06:19:40  
1/2" course thread



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BIG JOHN

09-16-2004 17:54:32




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 Re: How hot to heat crank pulley?? in reply to RT (seTX), 09-16-2004 17:44:56  
Usually you don't need to heat it up at all. I always get all of the surfaceses as smooth as possible with emery cloth and then using BP Blaster for lub just drive it on.

Be sure that you don't put your timing cover on tight. You need to put the seal on over the crank pully. Do NOT drive the pully into the seal as it will damage it. After you get the pully on far enough then you can tighten down the timing gear cover.

GOOD LUCK

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F-Dean

09-17-2004 05:30:13




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 Re: How hot to heat crank pulley?? in reply to BIG JOHN, 09-16-2004 17:54:32  
I use automatic transmission fluid when putting parts together. I was told by an Old-Timer that it is the "slipperiest" oil



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