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evsnova74 06-29-2015 11:14 AM

Another 800/8000 series front axle pivot tube (bushing) thread
 
My 816S front axle was wobbling all around, not only was the pivot tube worn but the bolt was also loose. I've already got it taken off and out, and I've done some searching on here to find the dimensions of the bushing, but when I get on McMaster Carr there's an overwhelming amount of choices as to what material to get. Does anyone have a link to MMC for the correct bushing for this application? Or should I just get on the horn to Richard's L&G since I need some C8 axle housing gaskets anyway? MMC always seems like the cheapest option but it's a pretty inexpensive part to begin with. What's the best route to take with this?

https://lh4.googleusercontent.com/-C...-no/15%2B-%2B7
https://lh4.googleusercontent.com/-N...-no/15%2B-%2B8
https://lh5.googleusercontent.com/-I...-no/15%2B-%2B9
https://lh3.googleusercontent.com/-d...no/15%2B-%2B10

Richard-tx 06-29-2015 01:33 PM

Re: Another 800/8000 series front axle pivot tube (bushing) thread
 
The bushing should be little longer than the width of the axle. The idea is that the bushing is firmly clamped between the ears of the frame. To get a proper fit, it may have to be made.

I would use a new fine thread bolt and nylock nut.

Mikey4 06-29-2015 02:32 PM

Re: Another 800/8000 series front axle pivot tube (bushing) thread
 
Call Richard's. Note that there are two sizes of these. Measure the outside diameter of yours so you can get the same one.

As Richard noted, above, The bushing and bolt are intended to remain stationary to each other. The movement is the inside of the axle bore to the outside of the bushing.You want the nut tightened really well to the frame ears.

Looking at your pictures, I would suggest the bushing is still useable. Replace the bolt with a longer one that would not have any threads inside the bushing. If you can get a fine thread grade 8, so much the better. I got several of them over years from my local Ace Hardware.

Get a brake cylinder hone to clean out the axle bore. Not too much, but just enough to clean it. Then use a fine emery to clean the outside of the bushing. Again, try not to remove any material, just enough to clean the surface rust.

If the hone is small enough, do the inside of the bushing, too, but this is less critical. Even a stiff round wire brush would be enough.

Remove the zerk from the axle and clean out the grease channel of any accumulated gunk. Replace the zerk if necessary. When reassembling, grease the outside of the bushing before replacing it. Maybe a very light coat on the bolt, just to retard rusting.

Going forward, be sure the regularly grease this fitting. Periodically check the nut, too.

CADplans 06-29-2015 02:48 PM

Re: Another 800/8000 series front axle pivot tube (bushing) thread
 
A steel tube inside of a cast iron axle is the perfect material combination,:fing32:

if you change to another material for the bearing, expect a short service life.

Steveamy40342 06-30-2015 07:24 AM

Re: Another 800/8000 series front axle pivot tube (bushing) thread
 
2 Attachment(s)
Attachment 1337209

Attachment 1337217

Here is a modification designed to help spread the grease around with the idea of keeping the proper parts moving and others immobile. Comments?

Btackett 06-30-2015 09:13 AM

I have an extra good sleeve if you need one. Just measure the length of yours and when I get back home I will measure mine. $3 shipping and it's yours

Mikey4 06-30-2015 12:08 PM

Re: Another 800/8000 series front axle pivot tube (bushing) thread
 
Quote:

Originally Posted by Steveamy40342 (Post 7965321)
Attachment 1337209

Attachment 1337217

Here is a modification designed to help spread the grease around with the idea of keeping the proper parts moving and others immobile. Comments?

I've seen several similar mods to the tube. Most were machined grooves of one configuration or another. Yours seems pretty easy to accomplish and just as effective, I suspect.

:fing32:

evsnova74 06-30-2015 12:22 PM

Re: Another 800/8000 series front axle pivot tube (bushing) thread
 
Quote:

Originally Posted by Btackett (Post 7965809)
I have an extra good sleeve if you need one. Just measure the length of yours and when I get back home I will measure mine. $3 shipping and it's yours

Wow I really appreciate that. It's 3.010" long and between 1.000" and 1.005" OD.


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