Help with removing CV joint / steering knuckle

Help with removing CV joint / steering knuckle

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M4cruiser

Original Poster:

4,461 posts

165 months

Sunday 9th June 2024
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My DIY skills are struggling with this one:
Need to remove a CV joint (to replace the reluctor ring, see different thread) and having trouble undoing the strut bolts.
Any help appreciated. I have a 2ft breaker bar, which has worked on the hub nut, and the steering tie rod nut, but I can't seem to shift these two, like the ones in this picture (below). Any merit in heating them up? Would I break something if I jump on the breaker bar? They are basically stuck with a couple of decades of rust.

TooLateForAName

4,887 posts

199 months

Sunday 9th June 2024
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penetrating oil.
Longer bar. could try jack handle slotted over breaker bar.

you are working on the nut not the bolt head yeah?

M4cruiser

Original Poster:

4,461 posts

165 months

Sunday 9th June 2024
quotequote all
HI
Yes, the nut. Expecting the whole thing to turn at some point so another socket on the bolt head, but at the moment nothing's moving.
I shall add some more double T. Perhaps leave it overnight?



Master Of Puppets

3,671 posts

77 months

Sunday 9th June 2024
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Are you sure those nuts aren't captive spot welded on?, might be worth trying to loosen the bolts rather than the nuts,
but give the visible thread a wire brush and penetrating oil on both sides.

M4cruiser

Original Poster:

4,461 posts

165 months

Sunday 9th June 2024
quotequote all
Master Of Puppets said:
Are you sure those nuts aren't captive spot welded on?, might be worth trying to loosen the bolts rather than the nuts,
but give the visible thread a wire brush and penetrating oil on both sides.
Hello, that's an interesting thought, thank you. I'll clean them better and have a closer look. I don't think they come as part of the strut (when I viewed an ebay replacement strut for comparison, I couldn't see nuts on it), so more likely to be separate, but another check seems a good idea!


Mercdriver

3,000 posts

48 months

Sunday 9th June 2024
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Try moulding plasticine around them and filling it with your favourite releasing oil, please, not WD40!

Leave it to soak in, it should be drawn into the threads if you get a good seal on the plasticine

Good lucksmile

E-bmw

11,086 posts

167 months

Sunday 9th June 2024
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Heat will make it MUCH easier, obviously just keep the heat away from the rubber parts in the area and concentrate it on the nut.

Smint

2,390 posts

50 months

Monday 10th June 2024
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Have you marked the bolt head position so they can eventually go back exactly as now, its entirely possible one or both the bolts themselves are eccentric for camber adustment, no harm done if they prove to be standard bolts.

Plus gas or similar releasing fluid over a period of time to allow soak in.
You do have 6 sided sockets?

Sometimes a rattle gun is handy, the hammer effect can help break the rust seal when you resort to leverage.

The strut nuts heads came undone easily on my 16 year old Forester but the bolts themselves were well embedded, spent some time twisting the bolts only a tiny fraction each way before attempting to remove them.

One other suggestion, would there be enough room to get the drive shaft out if you undo the bottom ball joint and steering knuckle instead and pull the strut towards you?

Edited by Smint on Monday 10th June 07:23

TallPaul

1,523 posts

273 months

Monday 10th June 2024
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Be careful when trying to undo those bolts with a long breaker bar, which is what I would use if you dont have access to an impact gun, its surprisingly easy to lift the car off the axle stands!

GiantEnemyCrab

7,818 posts

218 months

Monday 10th June 2024
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Get a mate / neighbour with a rattle gun.

M4cruiser

Original Poster:

4,461 posts

165 months

Monday 10th June 2024
quotequote all
E-bmw said:
Heat will make it MUCH easier, obviously just keep the heat away from the rubber parts in the area and concentrate it on the nut.
Ok, I tried more freeing oil, as suggested above, then a blow-torch. After that I was able to turn it, but found that the whole bolt was turning, so I wasn't undoing it!
Better than it was though. Now it looks like I need another breaker bar and another hex socket on the bolt head (they are the same size), and perhaps supporting one of them on an axle stand.... this is getting worse.!! My 2ft breaker bar is bending a lot.


GreenV8S

30,884 posts

299 months

Monday 10th June 2024
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You usually only need a breaker bar on one side. Try to hammer on a ring spanner that you can jam against some nearby piece of the suspension to stop the bolt turning. Use a socket and T-bar or ratchet bar if you don't have a suitable ring spanner. If it isn't working straight away, be prepared to get creative about using jack handles, other tools, pieces of wood etc in the right place to block the spanner from turning.

9xxNick

1,059 posts

229 months

Monday 10th June 2024
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They're not cheap (from £500 or so) but an induction heater's brilliant at shifting seized fasteners such as these.

M4cruiser

Original Poster:

4,461 posts

165 months

Monday 10th June 2024
quotequote all
9xxNick said:
They're not cheap (from £500 or so) but an induction heater's brilliant at shifting seized fasteners such as these.
I've seen Mike Brewer's mechanic use one of these on "Wheeler Dealers". At that price I think I'll stick to a blow torch!



richhead

2,546 posts

26 months

Thursday 13th June 2024
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They dont look that seized, nothing a rattle gun and a breaker bar on the other end should struggle with.
If all else fails grind the nuts off with an angle grinder, make sure you have new nuts and bolts first tho.