Engine seized up

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Model T Ford Forum: Forum 2013: Engine seized up
Top of pagePrevious messageNext messageBottom of page Link to this message  By John Markham on Friday, May 31, 2013 - 07:21 pm:

This is my second year with a T, today I drove it to work and home let it set in driveway for about 3 hours went to put it away and it would not turn tried the crank engine set up run fine when I parked it, got neighbor over and with one guy on starter and one on crank it broke free, started right up run a smooth as a watch no smoke seems fine, what could do this? Is it safe to take out?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Larry Bohlen, Severn MD on Friday, May 31, 2013 - 07:41 pm:

John,

Sounds like your bendix jammed.
If it happens again try rocking the car in high gear back and forth.

Larry


Top of pagePrevious messageNext messageBottom of page Link to this message  By Norman T. Kling on Friday, May 31, 2013 - 09:55 pm:

The starter turns the engine forward. The bendix is made to release when the engine starts. Try pushing backward in high it will usually break loose. If it does not work backward, try forward.
Norm


Top of pagePrevious messageNext messageBottom of page Link to this message  By John Markham on Saturday, June 01, 2013 - 03:48 pm:

I never thought of a starter problem I thought my engine was done maybe crank or stuck piston, if it is the bendix can it be cleaned and lubed?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dave Dufault on Saturday, June 01, 2013 - 04:01 pm:

This may help:

http://www.mtfca.com/discus/messages/80257/84319.html


Just curious John, as you running 12 volts?


Top of pagePrevious messageNext messageBottom of page Link to this message  By John Markham on Saturday, June 01, 2013 - 05:41 pm:

Running 6 volt


Top of pagePrevious messageNext messageBottom of page Link to this message  By mike taylor on Saturday, June 01, 2013 - 08:56 pm:

do a compression check quick also


Top of pagePrevious messageNext messageBottom of page Link to this message  By Norman T. Kling on Saturday, June 01, 2013 - 09:30 pm:

The usual cause of that problem is the ring gear on the flywheel has a worn place on it. You can see that gear by removing the bendix cover. Slowly rotate the hand crank while looking at the gear. The teeth on the gear were originally beveled so that the bendix gear can slide between the teeth. Over time, the bevel wears off and the teeth become flat on the surface toward the bendix. Also the teeth on the bendix become flat, and when you hit the starter instead of the teeth meshing, the bendix hits the flat area and stops. It just makes a "clunk" when that happens. Then the hand crank won't work either.

You starter might work fine for a long time, or it could happen again at any time. Replacement of the bendix gear if it is worn, could be a temporary fix, but eventually the ring gear needs to be replaced. That would be a good job for the next time you have the engine out of the car.

Unfortunately, the way the engine was made, the usual place for the engine to stop when you turn it off will be one of two places opposite each other, so the starter almost always hits the same place on the flywheel gear and that's why it wears out.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Chester Leighton on Sunday, June 02, 2013 - 08:59 am:

If your thrust surface on the main bearings is worn or the clearance wasn't set properly between the mag plate and flywheel, the flywheel magnets pole face may be coming in contact with the mag ring pole faces. Your could be locking up on the pole faces as they get in between on another. I had this happen when I first put my engine together. Rocking back and forth will shift the crank enough to allow the pole faces to pass one another.


Top of pagePrevious messageNext messageBottom of page Link to this message  By John Markham on Sunday, June 02, 2013 - 05:35 pm:

I pulled the starter to check bendix and see a large piece of bright metal all wadded up and wedeged behind the mag, I decided to pull the engine and found that the oil pipe that comes from the front to the back of engine somehow came loose and got caught in magnets it is destroyed, my mag never worked so last year I Hooked a 12 volt battery to the mag wire. And it runs great this way so I'm removing the mag, will it cause any problems if I also remove the magnets?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kerry van Ekeren (Australia) on Sunday, June 02, 2013 - 06:37 pm:

No, but fit an oil slinger kit to the fly wheel.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Norman T. Kling on Monday, June 03, 2013 - 11:13 am:

Be sure to put in the bolts which hold the magneto ring or oil will go out through the holes.
Norm


Top of pagePrevious messageNext messageBottom of page Link to this message  By Scott Conger on Monday, June 03, 2013 - 11:45 am:

It should be obvious, but no one's mentioned yet...that oil line MUST be replaced when you do this work.


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