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KW88

312-8 rear hub bearing

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KW88

I have an 88 312-8 that has lot of wobble with rear wheels. Axles have no movement except less the 1/8" in/ out. Does anyone know if there is a bearing in the hubs and part # if so?

20240422_164840.jpg

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JoeM
Posted (edited)

A little play in and out is good. 

No bearing in hub just a tight fit. Sounds like your hubs are worn. 

Need to remove, replace the seal, install a new key, install new set screws, and apply some Loctite 660 quick metal to the bore, reinstall and let it set up. 

All that if the bore is not worn too bad in the hubs. If so need some replacement hubs. 

The Loctite 660 can take up about .005 in slop.

Clean the shaft and bore with carb cleaner. 

If you have a way to measure the shaft and bore that would be a good idea.

A-Z makes a taper hub that I have used on a shaft that is .007 worn.

 

A good fit on an axle to hub is when you have to lightly tap the hub onto the axle. 

Edited by JoeM
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KW88

New hubs it is... Thanks JoeM

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KW88

Well... this can't be good. 

Went to drain transaxle fluid and nothing came out the drain plug! So, took off the fill plug and it drained from there.

20240430_171752.jpg

20240430_171844.jpg

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KW88

Sometimes your the windshield and sometimes your the bug... grr

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pfrederi

Stick an ice pick up in the drain and wiggle it around lets see what comes out

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oliver2-44
Posted (edited)
9 hours ago, KW88 said:

Well... this can't be good. 

Went to drain transaxle fluid and nothing came out the drain plug! So, took off the fill plug and it drained from there.

20240430_171752.jpg

20240430_171844.jpg

Look like it’s time for a diesel flush. Take a heavy wire and work a hole through that muck in the drain hole first. Put plug back in fill half full of diesel and drive up an down the road a while in all gears drain and repeat, repeat. 

Edited by oliver2-44

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oliver2-44
1 minute ago, pfrederi said:

Stick an ice pick up in the drain and wiggle it around lets see what comes out

:text-yeahthat:

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KW88

When your horse has taco bell...

20240430_173949.jpg

  • Haha 1

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Brockport Bill
6 hours ago, KW88 said:

When your horse has taco bell...

20240430_173949.jpg

certainly looks like ya got some moisture in there -- ugh - i have had to do 3 kerosene flushes when a C165 we rescued had milky gear oil like that from being outdoors a few yrs with a cracked gear boot letting water into tranny

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kpinnc
Posted (edited)

The keyway in your hub pic is clearly wallowed out. Hopefully the axles aren't as bad. Sometimes you can have a standard 1/4 key slot cut onto the opposite side of the axle- IF they arent terribly worn from moving. 

 

And yes, new hubs would be a good thing. 

20240422_164840.jpg.5f86e724241cd232ca374c1d7d52d068~2.jpg

Edited by kpinnc
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KW88

Bad find today on the 312-8 

20240501_192049.jpg

20240501_192335.jpg

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KW88

I need to replace axles on the 312-8 but I can't get the Woodruff out. Any tips?

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kpinnc
21 minutes ago, KW88 said:

I need to replace axles on the 312-8 but I can't get the Woodruff out. Any tips?

 

If you're replacing the axles anyway, just saw the exposed ends off. No need to get the key out. 

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Bill D
On 5/1/2024 at 7:25 PM, KW88 said:

Bad find today on the 312-8 

20240501_192049.jpg

20240501_192335.jpg

That might be salvageable.  If the keyway is still good, buy some replacement hubs from A to Z.  He sells special hubs that clamp to the axle when tightened.  Those grooves don't look to deep.

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KW88

Anyone know the part # for axles ? There 1-1/8"

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