Super C Camshaft Gear

Smith1000

Member
Just pulled off the old camshaft gear. To install the new one, do I need to drill and tap the center to draw it down, or, if hot enough, will it slide on without force?


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I would heat it in the oven. If that doesn't work you have to pull the cam and have it pressed on. Make sure you timed it correctly when installing the gear. I have a sketch somewhere on the computer. Hal
 
just put one on a C here this spring!! What you have to do is bake it in a pan of oil(i used vegy oil) I baked it at 450F four about four hours then when you put it on make shure you have the timing lined up and beat it home. I used a wood block and a sledge with smaller taps. I found that a hammer just would'nt do. The cam dose have some play back and forth that makes you think that you need to pull the cam, but you dont need to. They say that you need to bake it for a long time to evenly dispnse the heat?? It worked for me!!
 
Thanks. Got the new one in the oven right now. It is about 25 degrees out this morning, so this is a good morning to put it on. Sounds like it can be tapped on. I read though that if it is hit too hard, the plug could pop out on the back of the cam. I'll get it good and hot.
 
Didn"t work out. I got it on part of the way, but was off 1 tooth on the timing as I didn"t have it line up quite right. I already pulled it off. There is no way to get the cam gear fully on on the shaft this way because the camshaft recesses about a quarter of an inch when you tap on it.

The gear bottoms out against the housing and it won"t fully go on. The cam teeth will line up with the crank teeth, but the camshaft is recessed and the shaft does not come out flush with the gear. I"ll have to pull the camshaft. It would probably run part way on, but it seems like it might be a problem eventually.
 
I know i was worried that i would have to pull the cam but i still dont think you should have to!! How long did you bake it?? I made the same mistake with the timing marks.
 
I had it in the oven for 35 minutes on 450. That part worked fine. It was plenty hot/expanded, but that shaft has give in it and, unless the gear was completely loose going on, it is not going to go on all the way because the shaft retreats. It also has to mesh with the crank gear, which puts pressure on things.

I might just be able to tap the center of the shaft and draw it down. That might be a better option than pulling the shaft.

The key had shifted and I didn't realize it. I think that is when it moved throwing the timing off. The other thing is I did not pull the hydraulic pump gear. I will pull the pump off for the next go around.
 
About three things here to be concerned about.
First, if you have to tap it on you are putting some
force on the oil pump drive gear, second, if it goes
back far enough it will loosen the expansion plug
behind the cam so then you can split tractor to
replace it. Third, that engine has none or at most
one cam shaft bushing so pulling the cam out is
actually quite easy. No big worry about scratching
the bushings when pulling out and back in.
 
I would do as Pete 23 suggested and pull the camshaft before you damage something. Drop the oil pan, oil pump, remove rockers, pushrods and push the tappets up into their bore. Then you can pull the cam. Have your local auto machine shop to press the new gear on. Separate each item you remove and mark where it was removed. Cardboard boxes are usually handy for this. Hal
 
I had a tool made to install cam gears. You need an extra camshaft nut. Weld a 5/8 of 3/4 bolt to the nut being careful not to damage the threads. Use a lathe or carefully grind down the weld and nut until the gear will pass over the nut. Install your new tool on the camshaft and put the gear in the correct position. Use a piece of pipe or a bushing that will clear the tool and draw the gear on with a nut.
 
(quoted from post at 23:39:18 11/11/12) Sorry to bring up an old thread but we need some assistance Mr. Smith. We just discovered some chipped teeth on our cam gear and couldn't figure out how to get a puller on it. I see you've used one that bolts on. I didn't realize you could un-do those bolts and install a puller there to pull the cam gear off. Please advise someone......

From the looks of this thread, it seems like getting a "new" one on there is gonna be tough.
 

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