Warn High mount

[trump]

Just after some advice in how people have drilled and tapped the shaft on a high mount to remove the circlip that holds the brake on.

I know people will say use a drill. I have had it in a lathe and it didnt scratch it tried a drill real slow with heaps of cutting compund still no luck.

I have searched before people say go down that path with no luck, the bloody things harder than a cats head.

Any help would be apreciated.

Trump

[AndrewT]

SG Leslie + sons in Melbourne.
Ask for Mal.

[turps]

We used a drill bit in a cordless drill, while lying on the ground under a very muddy GU ute with a mid-mount Himount winch at last yrs OBC.
I will ask Juzza if it was any fancy drill bit.

[giantracing]

We used a drill bit in a cordless drill, while lying on the ground under a very muddy GU ute with a mid-mount Himount winch at last yrs OBC.
I will ask Juzza if it was any fancy drill bit.

no way.............

[nastytroll]

use an oxy torch and anneal the end of the shaft only, done heap this way. Use a CoHSS drill bit also.

We used a drill bit in a cordless drill, while lying on the ground under a very muddy GU ute with a mid-mount Himount winch at last yrs OBC.
I will ask Juzza if it was any fancy drill bit.

This wold work on the old brake shafts.

[trump]

Thanks guys for the responsers will heating the end of the shaft weaken it.

I was thinking of this but was a little unsure of the effect this would have on the shaft in the long run. I would asume that sinse the brake its self dosent come into contact with the end it should be OK?????

[bigcam]

i searched for hours on this.. without any luck..

the solution is pretty easy.

grind about 10 thou (1/4mm) off the end of the shaft this will go past the case hardening, then get a masonry drill bit and regrind the tip so it is sharp, you can buy sharp masonry TCT bits for drilling bricks without a hammer drill but i couldn't find them.

use a drill press or lathe, low speed lots of pressure, then tap, getting the tap to bite is a bit of a headache, use a good quality tap! once it gets started it will tap fine.

[turps]

We used a drill bit in a cordless drill, while lying on the ground under a very muddy GU ute with a mid-mount Himount winch at last yrs OBC.
I will ask Juzza if it was any fancy drill bit.

no way.............

Whoops, you are right. I was thinking of another bit. I read it as the free spool thingo.

[bigcam]

you can drill through the freespool lever (to pin it) with a 3.5-4mm normal HSS drill bit, that shaft is not hardened.

[giantracing]

We used a drill bit in a cordless drill, while lying on the ground under a very muddy GU ute with a mid-mount Himount winch at last yrs OBC.
I will ask Juzza if it was any fancy drill bit.

no way.............

Whoops, you are right. I was thinking of another bit. I read it as the free spool thingo.

thought so ........... there is no way any one can do that....

[trump]

Thanks guys for the response i will try the grinding trick i had through about that or heating with OXY but was a little unsure if this would be the way to go.

[trump]

Got stuck into this last night ground a bit of the face and sharpen up a masonry bit and it worked a treat. I must have sharpend the drill about 20 times to get therough the hard facing but once through that the material wasnt that hard. Took about 1 1/2 hours but got it all finished. Tapping the tread was a pain but once tap started to cut it was easy.

Thanks Big Cam for that tip would have never entered my mind to yse a masonry drill. will keep that in the memory thats for sure.

[bigcam]

no worries..

glad to help.

[GUte]

Cobalt drill bits for the tough stuff.

Al.

[nastytroll]

You can use ARTU drills for hardened steel but if its that hard a tap will not usually touch it.

When sharpening masonary bits use a dust mask, the dust is very bad for you, it can give silicosys wich is simiar to aspestosys.