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Unread 08-17-2013, 07:54 PM   #1
MuddyWJ
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a-arm bolt dilemma!

I went to put my spacer in for my a-arm and got it all disassembled and now one bolt won't go in straight! I never really cranked on it but obviously it's threaded diagonally. Question is how the hell do I fix this fiasco, besides replacing my pumpkin? At the moment I removed the spacer and have 2 of the bolts in.

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Unread 08-17-2013, 07:56 PM   #2
SENECA
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Put a jack under the pinion and jack it slightly until it lines up enough to thread the bolts in the diff.
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Unread 08-17-2013, 08:12 PM   #3
MuddyWJ
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The diff is threaded diagonally from the bolt not going in straight. I tried putting it in without the arm attached and it goes then leans after a half turn.
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Unread 08-17-2013, 08:22 PM   #4
SENECA
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I bolted the a arm loosley at each end with the spacer and bolts all lightly in place and then just jacked the output shaft up until it lined up,then tightened the ends and the three bolts at the diff.
This was done with the wheels on the ground as well.
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Unread 08-17-2013, 08:37 PM   #5
skain8
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Drill and tap it (straight this time). ;-)
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Unread 08-17-2013, 08:40 PM   #6
MuddyWJ
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Drill and tap it (straight this time). ;-)
My guess is it's a PITA? Do I have to drop the axle? Son of a *****! I hate aluminum.
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Unread 08-17-2013, 08:48 PM   #7
SENECA
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Ok I see one is diagonal ,yikes .i would just back it out and put it in straight and hope it finds its way ,otherwise tap the threads straightLol
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Unread 08-18-2013, 10:55 AM   #8
Tollmtn
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Quote:
Originally Posted by MuddyWJ View Post
I went to put my spacer in for my a-arm and got it all disassembled and now one bolt won't go in straight! I never really cranked on it but obviously it's threaded diagonally. Question is how the hell do I fix this fiasco, besides replacing my pumpkin? At the moment I removed the spacer and have 2 of the bolts in.
If you just bought the bolts it could be that the lead thread on the offending bolt was damaged causing it to cross thread. The other possibility is the bolt was in the wrong bin in the hardware store and it is the wrong thread pitch, it could even be an inch bolt instead of a metric bolt.

I would get a nut the same pitch as the threads in the diff and see if the bolt will screw in by hand. If the bolt is OK shine a light in the threaded hole in the diff and see how many threads look damaged, if it is only a few threads you may be able to use an 82* countersink to remove the first few damaged threads without risking damaging the deeper threads.

If worse comes to worse and you have to chase the threads with a tap buy a 4 fluted tap. They tend to have a long tapered lead in so they go in straighter when hand tapping or cleaning up existing threads than a two fluted tap.
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Unread 08-18-2013, 06:40 PM   #9
MuddyWJ
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I've looked at home depot and several auto parts stores and can't find the damn tap That's the right size. Nothing bigger than 1/2" or 12 for the metric size. Anyone know where to find such an item off hand? Or the bolt specs so I can order one?
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Unread 08-18-2013, 07:12 PM   #10
fast540
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Harbor freight in Santa Rosa. It'll be cheap quality but for a one time use it'll be fine and if u need a tap handle lemme know I'm in Marin all day tomorrow
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Unread 08-18-2013, 07:49 PM   #11
MuddyWJ
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Harbor freight in Santa Rosa. It'll be cheap quality but for a one time use it'll be fine and if u need a tap handle lemme know I'm in Marin all day tomorrow
Thanks. HF just moved into San Rafael so I'll go after work.
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Unread 08-18-2013, 08:18 PM   #12
narnwv
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HF didn't have one big enough when I had to do it.

I mis-threaded one too, drove around for 2 years with only 2 bolts in it (I DONT RECOMMEND THIS AT ALL!!!!)

I finally found one at Fastenal.

BTW-- It's M14x1.75
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Unread 08-18-2013, 08:44 PM   #13
MuddyWJ
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Originally Posted by narnwv View Post
HF didn't have one big enough when I had to do it.

I mis-threaded one too, drove around for 2 years with only 2 bolts in it (I DONT RECOMMEND THIS AT ALL!!!!)

I finally found one at Fastenal.

BTW-- It's M14x1.75
Thank you Narn! Guess I'll be ordering one tonight.
Edit: nevermind there's one 3 miles from my house. Ha-ha
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Unread 08-19-2013, 10:39 AM   #14
Tollmtn
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Originally Posted by MuddyWJ View Post
Thank you Narn! Guess I'll be ordering one tonight.
Edit: nevermind there's one 3 miles from my house. Ha-ha
The factory bolts I have and the bolts I.R.O. shipped with their spacer are 14mm coarse 2.0mm pitch as near as I can tell. You may want to bring a bolt with you and check that out.
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Unread 08-19-2013, 11:08 AM   #15
narnwv
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Yes, take a bolt with you. I could be mistaken.
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