Rear wheel hub - ouch! - MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information
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post #1 of 31 Old 02-11-2017, 11:27 AM Thread Starter
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Rear wheel hub - ouch!

Ironically I had to pull the other hub a couple weeks ago to replace the axle seal. That hub came off with little trouble.

So I'm feeling optimistic about the right rear hub which I need to pull off to put PTO axle block on. Uh, should have been warning flag number one...

Set screw came off with little trouble. But hub didn't budge with hub puller/impact wrench. So soaked it with PB Blaster and let it sit overnight (I've never used Kroil, but from reading other posts, I think I might have to stock the supply cabinet).

This morning gave it another go. Used some heat (MAP handheld torch - best I've got). Nothing. Hammering, impact wrench, just wouldn't budge. More impact wrench/hub puller...SNAP!! Another good example of keeping safety first. The large piece of shrapnel flew across the shop.

Get out the saws all. Burn through couple blades. Get close the axle. Bend a couple of cold chisels trying to spread the hub. She was STUCK. Finally more heat and hub puller back on with impact wrench, and she broke loose. Man what a difference compared to the other side.

For those who might be interested, the key was lined up with the groove. It hadn't wallowed and shifted. Was just really stuck.

So good news - hub is off. Bad news - hub is in three pieces! Time to find a replacement...and double the value of the tractor.

-Neil (jeepagain)
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'76 816S
'77 812
'43 Willys MB
'55 Willys M170 (Restoration underway...)
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post #2 of 31 Old 02-11-2017, 11:48 AM
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Re: Rear wheel hub - ouch!

Oh so familiar! Protect your future, use anti seize with reassembly. Good luck.

X 500 48" Deck 48" blade
Sears Suburban Super 12 1968
Craftsman 1990 something LG Tractor 46" deck
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post #3 of 31 Old 02-11-2017, 12:09 PM
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Re: Rear wheel hub - ouch!

That is where an oxy acetylene torch will work wonders. I bought a set with the little B size tanks years ago and it's some of the best money I've ever spent.


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post #4 of 31 Old 02-11-2017, 12:24 PM Thread Starter
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Re: Rear wheel hub - ouch!

Quote:
Originally Posted by Alien5044 View Post
Oh so familiar! Protect your future, use anti seize with reassembly. Good luck.
I was going to ask about anti seize. What is best practice in terms of which compound to use and how to apply? Thx!

'76 816S
'77 812
'43 Willys MB
'55 Willys M170 (Restoration underway...)
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post #5 of 31 Old 02-11-2017, 12:25 PM Thread Starter
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Re: Rear wheel hub - ouch!

Quote:
Originally Posted by Ss313 View Post
That is where an oxy acetylene torch will work wonders. I bought a set with the little B size tanks years ago and it's some of the best money I've ever spent.


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Agreed. It's been on my list. And recently, as in earlier this morning, it's moved to the top of the list!

'76 816S
'77 812
'43 Willys MB
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post #6 of 31 Old 02-11-2017, 12:27 PM Thread Starter
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Re: Rear wheel hub - ouch!

Any tips/tricks to knocking the key out? Not surprisingly, it's stuck too...

Thx!
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'76 816S
'77 812
'43 Willys MB
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post #7 of 31 Old 02-11-2017, 01:05 PM
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Re: Rear wheel hub - ouch!

Tap, tap, tap, tap, back and forth till loosens. Not side to side, but on ends of the key. Sometimes if there is a little room at the head of the key to fit in a sharp tool, tap in there to get "under" the key a little. Just remember keys are cheap, but shafts and keyways are not. Be careful not to mash the keyway in the shaft.

Did this thing take a lightning strike on that hub??

Anti seize, any brand will do, and should be widely available at any auto parts store. Parts are machined to fit together and work without having to be seized up!

Looks like you are on the last lap headed for the back stretch, good luck rest of the way.

X 500 48" Deck 48" blade
Sears Suburban Super 12 1968
Craftsman 1990 something LG Tractor 46" deck
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post #8 of 31 Old 02-11-2017, 08:14 PM
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Re: Rear wheel hub - ouch!

Where are you located? I can sell you a running 812 for two hundred, rusted out deck with good spindles.

Roger in Ohio

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post #9 of 31 Old 02-12-2017, 12:16 PM
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Re: Rear wheel hub - ouch!

Quote:
Originally Posted by Alien5044 View Post
...Just remember keys are cheap, but shafts and keyways are not...
Fastenal carries these woodruff keys. I just picked up ten #9 keys for my a Gravely L for about $0.18 each (they had to be ordered as these are not normally carried in stock). Make DOUBLY sure that they are not charging you an outrageous shipping charge before leaving the store as I have had this issue previously.

As for removing the key, time and patience are critical plus, just as Alien suggested 'tap, tap, tap...'. Heat and Automatic Transmission Fluid mixed equally with Acetone may help loosen things up. Be careful and do not rush things. I just successfully removed two more frozen exhaust bolts (for a total of four under my belt!) using this approach.

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post #10 of 31 Old 02-12-2017, 01:24 PM
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Re: Rear wheel hub - ouch!

I have used my drill press machinist vise, clamp it onto the key and persuade it to come out.

Roger,

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post #11 of 31 Old 02-12-2017, 04:03 PM Thread Starter
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Re: Rear wheel hub - ouch!

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Did this thing take a lightning strike on that hub??
Was starting to feel that way! The key would not budge with tapping or outright whacking. Eventually had to jury rig a "key puller". With a fair bit of tension on it and some whacks on the end of the arm that was hooked on the key, the key eventually dislodged. Whew!!

Finally. PTO block on. Axle polished up. Never Seize ready to go. Just need the replacement hub to show up.

In the downtime, I think I'll pull the other hub off again and slap some anti-seeze on that side...

Hammer on!

-Neil (jeepagain)
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'76 816S
'77 812
'43 Willys MB
'55 Willys M170 (Restoration underway...)
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post #12 of 31 Old 02-12-2017, 04:10 PM Thread Starter
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Re: Rear wheel hub - ouch!

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Where are you located? I can sell you a running 812 for two hundred, rusted out deck with good spindles.

Roger in Ohio
PM sent.

Thx!

'76 816S
'77 812
'43 Willys MB
'55 Willys M170 (Restoration underway...)
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post #13 of 31 Old 02-13-2017, 01:52 AM
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Re: Rear wheel hub - ouch!

Just a word of caution on those hub keys. Unless someone has found a source and I missed it they are not readily available. I have looked far and wide.

Don Evans

I thought I had G.A.S. under control, I was Gravely mistaken

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post #14 of 31 Old 02-13-2017, 10:09 AM
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Re: Rear wheel hub - ouch!

DO NOT USE ANTI-SEIZE or any other lubricant on wheel hubs!!!!

You are setting yourself up for bigger problems down the road as the hub will never be tight on the axle. The axle set screws are supposed to be re-tightened every year per the owners manual.

The trick to getting rusted on hubs off is HEAT and lots of it from an acetylene torch. Mapp gas for something like this is a pointless waste of time. One tractor I have required me to heat entire hub to orange hot to get it off.

What happens is the rust expands, fills the spaces between the axle and hub and creates pressure between the axle and hub. What you have to do is heat the hub up enough to relieve that pressure so it will slide off.

To remove stubborn keys, hit the key straight down with a hammer. Once it stars to move, then apply some mineral spirits to flush out rust and lubricate. Eventually you will get it.

A farriers end nippers works great for pulling tight keys. Zoro tools has Diamond Crescent nippers for $19 or $25 depending on length. DO NOT USE DIAGONAL or side cutters. All you will do is damage the key if it is really stuck and make it impossible to remove.

https://www.zoro.com/crescent-nipper...g&gclsrc=aw.ds


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post #15 of 31 Old 02-13-2017, 10:24 AM
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Re: Rear wheel hub - ouch!

I personally use JB Weld on my hubs. It prevents the hub from moving which prevents the key from wearing. It also prevents rust from forming and it just takes a little heat to soften the JB Weld and remove the hub.

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