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07-06-2020, 04:22 PM | #1 |
Senior Member
Join Date: May 2012
Location: Corbett OR
Posts: 233
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59 AB crankshaft timing gear replacement, Help
I was changing a 21 stud camshaft out for the correct 59 AB cam so I can get rid of the adapter. Started to replace the cam and found a chipped tooth on the timing gear on the crank. Looks like the machine shop chipped it while rebuilding the engine, then decided to install it anyway. The engine has a couple hours of run time on it. No hope getting help from them as it was done over 2 years ago. It had a new fiber gear, you can see where it was starting to wear a little. The chip is on the front of the tooth, and I'm sure it has to be replaced. What does it take to replace the gear. It looks like the crank will have to come back out. this has been a nightmare to say the least, and not the first problem. Any help will be greatly appreciated. Thanks Ron
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07-06-2020, 05:57 PM | #2 |
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Join Date: May 2010
Posts: 1,767
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Re: 59 AB crankshaft timing gear replacement, Help
the crank gear can be removed with crank in eng. the oil pan has to be removed. a simple two leg gear puller will pull the gear they come off ez
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07-06-2020, 07:12 PM | #3 |
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Join Date: May 2010
Location: Oshkosh, Wi
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Re: 59 AB crankshaft timing gear replacement, Help
No they do not come off easy.
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07-06-2020, 08:37 PM | #4 |
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Join Date: Jan 2011
Location: Central Ohio
Posts: 5,062
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Re: 59 AB crankshaft timing gear replacement, Help
Post some pictures as to the issue that you have (the chipped gear). Unless it has a really bad chip in it, I would think it would not be an issue - especially if running an aluminum timing gear. You really should NOT try to use a 2-jaw puller on the crank gear . . . can easily just chip teeth and still not get it off.
You should really use a puller that is designed to pull crank gears - they support the whole underside of the gear. What I can't tell you is IF they can be used with the crank in the engine (pan off). My guess is that there is probably a special one made for a Flathead (to work while the crank is in the block), but I've never used on. Anybody know of one to use on an assembled engine??? |
07-06-2020, 08:40 PM | #5 |
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Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: 59 AB crankshaft timing gear replacement, Help
I would defiantly go with an alum timing gear with the current crank gear or a new gear.
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07-07-2020, 09:05 AM | #6 |
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Join Date: May 2012
Location: Corbett OR
Posts: 233
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Re: 59 AB crankshaft timing gear replacement, Help
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