16 replies to this topic

[cjdillonnz]

Hey guys. I’ve looked at all the threads on here to get the 1.5” nut off the gearbox mainshaft. I’ve used the pipe extension but broke 2 ratchets. Lucky they were old ones. Any other suggestions? Should I use heat? Unfortunately I’ve used a rattle gun but found info to not use it. Time will tell if something is a paper weight. Thanks.

[imack]

I use either a flat ball joint spanner with a length of tube slipped over the handle, or a socket with a sliding T bar and length of tube

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Edited by imack, 26 May 2019 - 06:27 AM.

[unburntfuelinthemorning]

As above, ratchets aren't meant to be used like that.   I would have thought a rattle gun would be alright unless somebody knows otherwise.  Don't do it back up with one as you don't know how much torque is being applied.

[cjdillonnz]

I thought so too with a rattle gun but several people have said it damages gear teeth.

[alex-95]

How are you holding it? I just use a 1 1/2 or 2 foot long breaker bar, If you don't have one it's worth getting one, it gets used more than you'd think.

[cjdillonnz]

Blocks of timber under my work bench.

[dodge44]

Could try using a sliding 'T' handle breaker bar (Often come with socket sets as well as a ratchet) and give it a wallop with a copper & hide mallet. Not that I'm advocating hitting tools generally but the 'shock' element sometimes shifts what a long breaker can't move. Ideally you want to be using a black impact series socket as Chrome Vanadium have a tendency to crack when subjected to shock. There is always a risk if the gearset bearings are really worm that a geartooth might break somewhere as the teeth are not meshing evenly but this could also happen with a breaker bar so it's a risk whatever. No matter what though it's crucial the box is held down firmly or you will loose energy if it moves. Personally I put the box face down on a sheet of hardboard and then manoeuvre a railway sleeper size length of timber level on top of it, which I then stand or sit on before going into action. A long breaker bar usually shifts them but have heard others resorting to using an angle grinder but you are also likely to loose the pinion in the process (and the mainshaft, if you are not careful) so best avoided...

[Stu1961]

This is how I have done it. If your work bench is sturdy enough, turn the box upside down and bolt it down through two pre drilled holes in the bench top, then I have a piece of 6" x 2" timber with a hole drilled through it that the extension bar will go through this sits on end on the work bench top and acts as a support for the extension bar and also keeps the socket square on the nut. Attach either a sliding tee with an extension tube or long breaker bar. I have found this method works well as you have both hands available to grasp the tube/breaker bar without having to worry about the socket slipping off.   

[mini13]

You need a proper breaker bar, somthing like this,

Halfords Advanced Breaker Bar Drive https://g.co/kgs/zEDe6e

Also you need to have the gearbox locked in 1st and 4th as this combination minimised breaking teeth off

[cjdillonnz]

Thanks everyone. I’ll have another go with a breaker bar.

[phillrulz]

Sorry, is this the flywheel bolt ? I have the verto 30mm one and got it off with a 18" bar from halfords. Wasnt too bad. 

[unburntfuelinthemorning]

Sorry, is this the flywheel bolt ? I have the verto 30mm one and got it off with a 18" bar from halfords. Wasnt too bad. 

No it's the mainshaft nut which holds the diff pinion on.

[phillrulz]

 

Sorry, is this the flywheel bolt ? I have the verto 30mm one and got it off with a 18" bar from halfords. Wasnt too bad. 

No it's the mainshaft nut which holds the diff pinion on.

 

 

Sweet, ignore me then 

[cjdillonnz]

So I got a large breaker bar and it still won’t budge. Has anyone used heat?

[DeadSquare]

Are you in Wellington Herefordshire ?