8.8 rebuild

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May 29, 2017 | 09:10 PM

jrsilverstar

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8.8 rebuild

So, happy memorial day first off. Second off ive an issue. I rebuild powdercoated and all my 8.8 in my 84 f150. Went from i think 355 open to 373 posi. New axles pinion carrier bearings shims and seals. Got everything set up. Backlash, gear patterns, and pre load and its BEAUTIFUL, time to put in the axles. Easy right? Well ive done many axle removals and installs before however never with all new parts hence my question on here. Should (with bearings installed) the new axles slide right into place or should there be some resistance from the bearings? My gut says it should slide in. But a co worker says not with new axles. Have measured old to new and all that. We dont see anything that causes cause for concern. However side note. I welded ears on the ends for a disc conversion. We have ABOUT 15 thousandths of an egg going on in the place the bearing sits Is this no bueno and causing the hang up? Note:we kmow the axles will go all the way in (hit it with a hammer and adjust for splines and itll go in. Just never have had to do that on a solid axle before. Thoughts, answers, solutions?

May 30, 2017 | 05:45 AM

Timehunter

Mountain Pass

Joined: Oct 2015

Posts: 215

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From: Buffalo,Tx.

Doesn't sound good.
They should slide in easily.
Sounds like you warped the bearing housing when you welded on it.
Only way to save it that I can think of is to bore the bearing housing out
and put a sleeve in it.
How to bore it will be interesting.
It will be better to get another rear end and figure a way to bolt the conversion on
instead of welding.
That is,...if you plan on keeping it and it being dependable.....

May 30, 2017 | 05:56 AM

Franklin2

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From: Virginia

Another related thread started a few days ago.

https://www.ford-trucks.com/forums/1...e-rebuild.html

May 30, 2017 | 07:03 PM

enriched&beyound

Fleet Mechanic

Joined: Aug 2008

Posts: 1,446

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From: NE Iowa JD Country

Quote:

Originally Posted by Franklin2

Another related thread started a few days ago.

https://www.ford-trucks.com/forums/1...e-rebuild.html

dave this is the same truck/ situation

May 30, 2017 | 10:57 PM

kr98664

Lead Driver

Joined: Nov 2013

Posts: 7,174

Likes: 1,174

Quote:

Originally Posted by jrsilverstar

side note. I welded ears on the ends for a disc conversion. We have ABOUT 15 thousandths of an egg going on in the place the bearing sits Is this no bueno and causing the hang up?

Please clarify something, please. Does "an egg going on" mean the bearing recess (in the end of the axle tube) is now out of round due to the welding? And the measurement you gave means instead of being round, the recess is now .015" undersize at the narrowest dimension?

If so, that's putting a heck of a squeeze on the bearings. Did you have to hammer the snot out of them for installation? If the outer race is not super thick, the bearings would probably distort to match. That would certainly explain the difficulty getting the shafts to fit.