Cross threaded wishbone bush bolt?

[COLVERT]

Originally Posted by Andy_with_a_screwdriver

I tried to find a long 18mm spanner today without success, but did buy a six sided 18mm socket.
I had a go with it on the long breaker bar and had a small moment of success this evening, although i nearly put my shoulder out in the process

This time, without the socket slipping I managed to tighten the stubborn bolt about 1/12 of a turn, fortunately i then undid it the same amount. I did this twice and then gave up as it was getting too dark.

I gave it yet another soaking with penetrating oil, ready for tomorrow's attempt.

Take it easy and not too much at a time. You are on the road to success so don't ruin it by losing patience.---

[T16]

For this type of thing, I have a mini blowtorch.

Its a Portasol 220 I think, small enough flame to heat the head of normal bolts ONLY, without damaging paint/anyhing else in the local vicinity.

Works absolute wonders if you are patient and heat cycle things a few times and use penetrating fluid too.

Patience is a virtue with stuck bolts, and since applying the mini blow torch, everything has been a synch so far..(touches wood)

Ive seen how garages use oxy torches, the flame is too big and they end up burning everything within a 20 mile radius, not that they care.

Pic:-

[Andy_with_a_screwdriver]

I've borrowed a long 18mm ring spanner from my friendly snap on salesman.
Now up to 1/8 of a turn after another 15 mins grunting and bleeding! I'll keep going got a head torch today.
Slow going job this, we've got to catch a ferry to france on saturday night!

[wullie480]

Originally Posted by Andy_with_a_screwdriver

I've borrowed a long 18mm ring spanner from my friendly snap on salesman.
Now up to 1/8 of a turn after another 15 mins grunting and bleeding! I'll keep going got a head torch today.
Slow going job this, we've got to catch a ferry to france on saturday night!

Are you using a combination spanner? You can use another combination or ring spanner over the open end to give you extra leverage.

[Andy_with_a_screwdriver]

Originally Posted by wullie480

Are you using a combination spanner? You can use another combination or ring spanner over the open end to give you extra leverage.

Yes I've tried this, it's a bit of a longwinded process though as I can only move it a short way, has occasionally slipped off and there are quite a few sharp edges under there!
I've had to keep repeating the movement back and forth as it works loose, I'm at about 1/4 turn now so it is improving Just takes ages because of exhaust pipe etc in the way
No work tomorrow so will try and finish it, hopefully

[Mike Noc]

Mmmm if you are only able to move it a bit and it is still just as tight then it has either picked up, or as you first thought it has cross threaded.

Hopefully once it is out you can run a tap down it and clean up the threads. Don't forget to blow out the swarf.

If not then either a helicoil, or drill it out and fit a longer bolt and a nut. You can drill up from underneath, but if you helicoil it then the subframe will have to be dropped.

[Andy_with_a_screwdriver]

NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- piece of rusty NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- pain in the NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-!!!

Another hours back and forth with a breaker bar doing 1/6 turns and a knackered shoulder later and it's out. Coffee and clean up time now.
And it's a lovely sunny day.

[kaiser]

The picture is not good, but the thread looks in good shape?

[trikey]

A lot of rust in that hole judging by the state of the bolt, I’d run a tap down there before refitting.

[Andy_with_a_screwdriver]

Originally Posted by kaiser

The picture is not good, but the thread looks in good shape?

It's not too bad, cleaned it up with a wire brush and a needle file, it's a little bit pitted in places.

Originally Posted by trikey

A lot of rust in that hole judging by the state of the bolt, I’d run a tap down there before refitting.

Yes I drilled a small hole underneath the thread a couple days ago to spray penetrating oil in. I've just filled the bolt hole a couple times with it and loads of brown rusty junk drained out.


Don't think I have a tap that size but I've run the bolt fully in and out 3 times and it seems pretty free now.
Just about to change the bush now.