Broke the timing gear

[J.Beals]

Well I was plowing the sidewalk, Mistake, in 3rd gear.
The blade hit a shifted piece of sidewalk hard and she stopped dead.
Will not restart. No spark.
Back in the garage, I pulled the distributor cap off and the rotor was stuck.
Wishing that it was a shear pin on the drive I pulled it out. It is fine.
Well I keep going till I found pieces of the timing gear.

So I am not sure just what to do.
Seems that the gear is pressed on to the cam shaft.

I have the front end disassembled, and ready to split off the front end to get at the timing cover.

Questions are what is best way to fix this?

Advice is needed.
Really bumming I busted her.

Thanks James
ps 1968 International Cub SN 231243j

[ricky racer]

Welcome to the best Cub website on the planet!!

Sorry to hear about your luck but manuals are located near the top of this page and should help you in the repair. Others will be along shortly to help you out and give expert advise.

In the mean time, maybe this will help.

http://www.cleancomputes.com/Cub/Blue%2 ... Engine.htm

Once you get it fixed you may want to consider this modification:

http://farmallcub.com/phpBB2/viewtopic.php?f=64&t=48334

[John *.?-!.* cub owner]

Can you explain or show pics of where you found gear pieces and show pieces? Distributor rotor and cam shaft gear are not connected. Cam shaft driven directly off gear on crankshaft. Distributor is driven from governor via idler which also runs on gear on crankshaft. From what you have said so far, I doubt you caused it by hitting anything, just bad luck.

[J.Beals]

Thanks Ricky R.
That is a nice mod, and it would have saved my Cub.
The whole leveling blade is loose after a lot of use by the PO.
So alterations are in order, why not make it much better.
Thanks again.
JB

[Eugene]

The cam shaft and valve train is located on the side of the engine opposite the distributor drive.

Before you do any more demolition, and assuming the engine still turns over by hand. Rotate the engine by hand and see if the valves/cam shaft operates. Then see if the idler gear, visible in the distributor drive opening in block has all it's teeth.

If you have gear teeth parts in the block's distributor drive housing opening, the parts came from either the governor or the distributor drive gear. That's a guess.

If you are going to remove the engine front cover - - - you need a special puller to remove the pulley.

[J.Beals]

Can you explain or show pics of where you found gear pieces and show pieces? Distributor rotor and cam shaft gear are not connected. Cam shaft driven directly off gear on crankshaft. Distributor is driven from governor via idler which also runs on gear on crankshaft. From what you have said so far, I doubt you caused it by hitting anything, just bad luck.

Well I can't say I have the correct name, just a guess from function
I have picts,. how do I post them??

jb

[J.Beals]

So these tell the story.
I got the name wrong... NTFT .
This is off the inerweb

So it is the idler gear I trashed? Bad luck or not it is busted.
And it knocked my socks off too.
JB

[Dale Finch]

Check out parts #5, 6, & 7:
http://www.cleancomputes.com/Cub/Cub%20Parts%20Manuals/TC-37F%20Revision%206%20(08-79)/Group%20-%2012%20-%20Power%20-%20C-60%20Engine/Page-09.jpg
Are these the ones that are broken? I happen to have an idler gear and shaft from a parts tractor I bought, if you need another set. Just let me know.

[Gary Dotson]

Ouch!! You're going to have to get your front cover off to examine the damage. Gears don't just break like that, something got into that gear and broke it and it may have damaged the other gears as well. Post back when you know the full extent of the carnage.

[J.Beals]

The cam shaft and valve train is located on the side of the engine opposite the distributor drive.

Before you do any more demolition, and assuming the engine still turns over by hand. Rotate the engine by hand and see if the valves/cam shaft operates. Then see if the idler gear, visible in the distributor drive opening in block has all it's teeth.

If you have gear teeth parts in the block's distributor drive housing opening, the parts came from either the governor or the distributor drive gear. That's a guess.

If you are going to remove the engine front cover - - - you need a special puller to remove the pulley.

Thanks Eugne,
Where might I find this puller? And What makes it special.
I can see that the hand crank center of the pulley might be hard to find a good center....
best
JB

[Barnyard]

Where might I find this puller? And What makes it special.I can see that the hand crank center of the pulley might be hard to find a good center....

There are a couple methods showing the use of different tools in the "How To" forum.

[Ben B]

Good luck with your repair efforts. I know that it is frustrating, especially when its needed.

I don't have a blade yet, but if I did, then I could have possibly had the same problem. I was unaware that they would grab so hard and possibly damage the drive train. It is a great idea to make the modifications shown to convert it to a full blown snowplow, if that's what its being used for. My Dad used to plow snow with his old cub, and he never had it break anything, but it did do some abrupt stops for the same reasons.

[Eugene]

Do not try the jawed pullers, they will break the pulley. You can use a heavy duty bearing splitter. Or perhaps borrow the pulley puller from a local Cubber. Your zip code shows Ann Arbor, Michigan.

After removing the engine front cover, and determining the extend of the damage, - - - pull the engine oil pan. There will be some metal pieces in the pan. Thinking a chewed up washer.

[Smokeycub]

So it is the idler gear I trashed? Bad luck or not it is busted.
And it knocked my socks off too.
JB[/quote]

Holy cow!! Something must have jammed in the idler. Can't imagine a "no cause" self destruct!!

[J.Beals]

Do not try the jawed pullers, they will break the pulley. You can use a heavy duty bearing splitter. Or perhaps borrow the pulley puller from a local Cubber. Your zip code shows Ann Arbor, Michigan.

After removing the engine front cover, and determining the extend of the damage, - - - pull the engine oil pan. There will be some metal pieces in the pan. Thinking a chewed up washer.

When I hit the oil pan with my hand I could hear pieces bounce, so dropped the pan and that is where most of the idler was, some pieces I picked out of the front.
I will not attempt pulling the pulley until I have the right tool.
Right now I am working on the supports before I take the front end off.

Any one know a Cubber in the Ann Arbor area, Dexter, Chelsea, Stockbridge, Jackson?

Thanks
JB