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checking gear mesh with Prussian blue

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Dan W.
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Location: western NY

checking gear mesh with Prussian blue

Postby Dan W. » Tue Oct 24, 2006 5:07 pm

I'm about to make my first attempt at checking the mesh between the pinion and ring gear on my Cub using Prussian blue. The service manual says to apply it to the pinion. There's not much room in there, so what's a good way to apply it and do the gears have to be cleaned with solvent first? If there is something I didn't ask about, please volunteer any tips that would help. Thanks.
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Daniel H.
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Tractors Owned: 1951 Super A
1955 Cub Lo-boy
1955 Ferguson TO-35
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Location: NC, Yadkinville

Postby Daniel H. » Tue Oct 24, 2006 8:03 pm

Do you have the differential out of the tractor? I haven't tried this yet, but I've been studying up on it because I will soon be ready to reassemble my transmission. I would think the pinion and ring gear would have to be degreased before applying the Prussian blue. If you haven't changed bearings, gears or messed with the shims, I wouldn't think this would be nesessary.[/img]
The four most expensive words in tractor restoration: "We might as well..."
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BigBill
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Location: in northern usa

Postby BigBill » Tue Oct 24, 2006 8:43 pm

On ring and pinions we would degrease and assemble them with a thin coat of white grease so we could see and check the pattern.

I'm sure the old rules apply with all differentials on cars and trucks we would always use the same pinion shims that go between the pinion and the bearing that was a set dimention for that housing and it was always the correct pinion depth. I haven't worked on my cub's differential yet but i'm sure all the tricks apply.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
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Brandon Webb
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Tractors Owned: 1957 Farmall Cub High Crop
1969 International 140
1975 International Cub

Cub 174 Planter with Row Markers
Cub 201 Planter with Row Markers
No. 27 Corn and Pea Attachments
No. 12 Rotary Weeder Attachment
Pittsburg Carry-Lift
Brookfield Buzz Saw
IH McCormick Seed Plate Test Stand
Location: London, Kentucky

Postby Brandon Webb » Tue Oct 24, 2006 9:27 pm

I completely built the trans on my cub, your going to have to get used to taking the ring gear in and out at least 10 times, to get the preload set correctly. It's a little easier if you get the bearings where you can easily remove them from the rear assembly. I Left the O rings off my bearing retainers until final assembly, because you'll ruin them taking them on and off so many times. You should be able to get your hand in there enough to put the grease on, you'll just about to have a helper with a flashlight to see it turning though. It takes alot of patience, make sure your in the mood to fool with it, because if you get it set incorrectly in won't last long. Brandon.

Check this out: http://www.cleancomputes.com/Cub/Cub%20 ... e%2009.jpg
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