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Old 02-21-2004, 07:53 PM   #1
1971 Cheyenne
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Question Sandblasting 12 Bolt

Hey,

I'm taking my 12 bolt rear end on monday to get it sandblasted. What should I do to keep sand from getting inside? I've heard of stuffing greasy rags in around the yoke, or taping it up good.

Anything else I need to seal up?

Thanks!
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1971 Cheyenne 10 454/th400-Undergoing a full frame off resto.
1972 Chevy short/step 2wd, 350/th350
1983 M1009 CUCV Military K5 Blazer
1981 Dodge 1 ton 4x4 dually flatbed
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Old 02-21-2004, 07:58 PM   #2
rage'nrat638
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SO YOUR NOT PULLING THE AXELS AND YOKE?????
if not good luck.....
can't see doing any sand blasting with out the seals going south..
if you got it out in front of you....pull every thing and replace all seals.....
WHY DO THIS TWICE
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Old 02-21-2004, 08:18 PM   #3
cdowns
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the smart thing is to strip that housing naked and blast away
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Old 02-21-2004, 08:50 PM   #4
cableguy0
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exactly strip the houseing clean then blast it and wash it real good to get all the sand out. sand will play hell with your bearings
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Old 02-21-2004, 09:29 PM   #5
1971 Cheyenne
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well the vibe i'm getting is that I should pull everything out, blast the housing, then put everythign back together with new seals etc.

Your right, I'd rather not do this twice, I was just under the impression that I could safely blast the entire assembly at once.

Here's the Q. What is involved in breaking everything down? is this something that can be done easily in an afternoon/day? When putting it back together do you have to set up the gears etc. again?

As you guys can see, the other kind of rear ends are my specialty
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1971 Cheyenne 10 454/th400-Undergoing a full frame off resto.
1972 Chevy short/step 2wd, 350/th350
1983 M1009 CUCV Military K5 Blazer
1981 Dodge 1 ton 4x4 dually flatbed
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Old 02-21-2004, 10:09 PM   #6
mocwon
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You can blast the rear as a whole unit. Any sand blaster worth a crap can and will protect the front pinion seal area and end axle tube areas with no problem. I pulled axles, seals and bearings (I was planning on replacing bearings, races and seals) and made plastic plugs for axle tubes which hammered in place. I left the ring and pinion with yoke and cover in place.
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Old 02-21-2004, 11:09 PM   #7
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I have done them both ways. From experience, it is hard to
get all of the sand and residue cleaned out. I prefer having
everything in place.

I will take string and tightly wind it around the seal and yoke
ends until it is built up enough to cover the areas. I then try
to blast away from the areas as much as possible. When
finished I either unwind or cut away the string with a sharp
knife. I am much more confident doing it this way.

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