[eBoyDog]

Strange thing happend this morning, I went to push the Zebra 446 in the garage while turning the steering wheel and the sterring wheel came loose and just spun. when it did the steering gear along with the rod to front wheel fell to the floor.

In looking at the parts, the pivot pin broke in half flush in the support member, is looking at the broken edge, it appears to have been already cracked and with me turning the steering wheel finally snapped it.

How hard is it to get that remains of the that pin out and based on my description, do I need to tear it down and removed that entire support bar? I had a support bar in a 220 that i tried to remove and I could not get it out so I'm scratching my head on how to go about this repair. There is a nut on the top of this pivot pin and according to the parts catalog, this pin is threaded in the support bar.

After the broken one is out, is this a part that is still available? C14200 is part number I se it as.

Here's the parts diagram with the red arrow showing where it's broken off at.

 

[bhildret]

The pin replacement kit is available ... in stock for immediate shipment.

C47239 KIT - C14200 STEERING $23.79

Should not be too hard to get it out ... might be easier with the mount out of the tractor, but I would sure try it in first ... odd failure, can't say I've heard of that before.

Brian

 

[eBoyDog]

That's what I thought too, odd part to break. From the rust on the end of the pin it's been all but broken for sometime. Only way I imaigine of how it might have broken is if the front wheel were turned sharply by hitting something at a high speed.

Brian, I will call you later this coming week, I might need a couple other things too if you can get them, a lift arm for a older blade that has the lift arm above the front wheel instead of under them. Any chance that kit comes with a new steering gear? (C18711)

Now to figure out how to get the old pin out, I have set of thin wrenchs I bought for the hyrdo lines that should be able to get in between the spool valve linkage and the nut. Then take a dremel cutter and make a slot in the pin so I can get a large flat head screw driver to turn the pin out. I had a similer pin in a 220 support frame that I tried removing as it wasn't too worn and wanted to use it rebuild another I was working on, unbroken, I couldn't do anything to get it out (couldn't get enough grip on the pin shaft).

 

[Billygoat]

Brian- Have YOU ever tried to steer a Zebra? :sidelaugh: I understand them critters can be ornery :lol: .

 

[eBoyDog]

Brian- Have YOU ever tried to steer a Zebra? :sidelaugh: I understand them critters can be ornery :lol: .

My other theory on such could have been cracked is that while my 446 was at the exotic animal park, a lion mistook the 446 for a real zebra and the operator had to make a hard right turn to avoid it catching up to it and hit a pile of dried elephant dung by accident.....

 

[Kenc]

If there are enough threads showing on the top:

Back the nut of a turn or so.
install a second nut on top of it.
using two wrenches, tighten the two nuts together, TIGHT!

Now try unscrewing the stud. It will only go down the amount you backed the nut off originally.
But that should be enough to allow you to turn it the rest of the way out using a slot as you planned, after removing the nuts of course.

I've seen a couple of those, on parts machines I bought. Both were due to repeated pounding from rough ground/ditches etc when mowing at high speed.

 

[Rockdog]

Is this a press fit originally or tapered? With what appears to be a pretty small radius at the shoulder you definitely dont want to overtighten cause thats a pretty big stress riser.

 

[eBoyDog]

I think I better buy a lottery ticket since this good luck of mine is going to end soon.

Here I was all stressed out with thinking how hard it was going to be to get that broken pin out, first I tried removing the linkage from the spool valve which allowed me to get to the nut on the top of the pin but couldn't get a wrench on the pin so fortunatly this being a older 446 with just the battery sitting on top of the pump I took the battery and the battery shelf out and managed to get a socket down inside there, with a couple of extensions and busted skin on my knuckles, the whole thing came out. The nut/thread was rusted enough that it turned the whole broken pin out.

Now to get with Brian to get a replacement.

 

[eBoyDog]

Oh and this is what a broken pivot pin looks like. The fresh metal was a strip in the center, the rest on inside diameter was rusted indicating something cracked it and just a little bit was holding it togather.

 

[cp7]

Good deal you got that bad tooth pulled out of the zebra. You just have to be aware when sticking your fingers in it's mouth that it might bite you.
You better get the parts overnighted or your going to be mowing with the Murray again.