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Nov 27, 2009 | 11:56 PM

Vinford

Thread Starter

Cargo Master

Joined: Aug 2004

Posts: 3,455

Likes: 8

From: Williams Lake B.C.

Need help or ideas

1979 F-250 4x4.
I broke the breather block off the rearend.
Its the block that screws into the rearend housung and the braklines also attatch to it.
I broke it off and drilled it out.
I cant seem to get another one?
Also Ive wrecked the threads in the hole I think. (cant seem to get a bolt stated in there)
What should I do?
Change the whole rear end?

Nov 28, 2009 | 12:40 AM

Riderman

Elder User

Joined: Jul 2003

Posts: 668

Likes: 2

Quote:

Originally Posted by Vinford

No, do not change out the rear end. Get a block from the junk yard or re-use yours. Number Dummy probably has a P/N for a new one waiting for you.

A couple of options that I'd try. 1. Run the proper size tap first, and reduce the mounting toque of the block with a new bolt. 2. Re-drill the hole to the next larger thread size and tap it, or 3. use a heli coil kit if you desire the original thread size. You can drill one size larger in your block with no issues. BTDT

Nov 28, 2009 | 01:22 AM

Fordworth

Laughing Gas

Joined: Dec 2007

Posts: 1,052

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From: Alvarado, TX

Drilling it out larger won't do much good because it needs to have the hollow fastener with the hose barb on it for ventilation. If you just stick a regular bolt in it the wheel seals will blow out. I would get the proper fastener and determine exactly what thread size and pitch it has before trying to force a standard bolt in the hole. I could be wrong (and I probably am) but I thought it was pipe thread which is different from course or fine thread bolts.

Nov 28, 2009 | 01:38 AM

mikeo0o0o0

Hotshot

Joined: Apr 2009

Posts: 14,333

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From: Stanley, VA

The thread size is 7/16"-20. P/N D6UZ-4022-A Axle vent, F250/350 1975-up from S/N W20,001

Nov 28, 2009 | 02:02 AM

Riderman

Elder User

Joined: Jul 2003

Posts: 668

Likes: 2

[QUOTE=Fordworth;8179206]Drilling it out larger won't do much good because it needs to have the hollow fastener with the hose barb on it for ventilation. If you just stick a regular bolt in it the wheel seals will blow out.

Ya got me there, I sure didnt mean a standard bolt. I was focused on thread size in my reply.