10 replies to this topic

[ac427]

When i removed the idler bearing for the transfer gear from my gearbox casing. I didn't use a blowlamp, just the old 2 sockets and a length of studding method.

 

Is heat definitely required?

 

Have i knackered my gearbox casing removing the bearing this way?

Edited by ac427, 13 March 2023 - 09:04 PM.

[lildeucecoop72]

Regarding your case - probably best to post a pic if you can?

 

I have not used heat for the idler bearings, only first motion bearing race, but I guess that could work.

 

A puller is best, home made like the one you describe, or the even better very rare special BL tool made by V.L. churchill in the 60s if you can get your hands on one. 
 

The other method if you have a steady hand, are feeling brave and replacing the bearings anyway (which is reccomended) is to very carefully cut it out with a tool like the dremel, taking care not to cut into the transfer case itsfelf. This is a last resort though. The bearing case is fairly soft and bendable so you can 'help' it out with pliers, small drifts etc. 

 

If you are doing the one on the gear box side, remember to remove the circlip first if there is one..!!
I forgot to do this once using a puller, not seeing the circlip. I forced the bearing through the circlip making a right mess, nearly wrecking my gearbox case in the process.

 

[Spider]

A puller is all that's needed for the Idler Gear Bearing in the Gearbox case, I wouldn't advocate using any heat here.

In regards to the Transfer Case, the factory explicitly caution against using heat here;-

 

 

[lildeucecoop72]

A puller is all that's needed for the Idler Gear Bearing in the Gearbox case, I wouldn't advocate using any heat here.

In regards to the Transfer Case, the factory explicitly caution against using heat here;-

 

 

Wow, this is interesting - seems to be a lot og info and videos showing the heating method...(even from proffesional gearbox builders) and that seemed to be the way to do it.

 

Is this a case of that so many have done it this way, that its become 'accepted/normal' ?

[KTS]

i must admit to using a steam wallpaper stripper to heat up the casing to help get it out.

 

an alternative to a puller is to push it out using hydraulic action - Nicklouse posted that a while back

[floormanager]

When i removed the idler bearing for the transfer gear from my gearbox casing. I didn't use a blowlamp, just the old 2 sockets and a length of studding method.

 

Is heat definitely required?

 

Have i knackered my gearbox casing removing the bearing this way?

You been watching videos on Youtube showing using heat?  I used a stud and socket method.  The video used a hammer and socket.

[Spider]

Is this a case of that so many have done it this way, that its become 'accepted/normal' ?

 

It's never been acceptable as far as I am aware and I have had to rectify - or try to - cases that have been distorted from having been heated.

[ac427]

A puller is all that's needed for the Idler Gear Bearing in the Gearbox case, I wouldn't advocate using any heat here.

In regards to the Transfer Case, the factory explicitly caution against using heat here;-

 

Thanks Spider, I thought this was the case.

[bpirie1000]

Hammer time...

Keep away from the heat there... to many delecate bits in there

[Kevybmini]

But off topic but when you set the idler gear end float - when you do the final assembly would using gasket sealer then effect this tolerance or is gasket sealer not required on the transfer case.

[KTS]

assuming normal application, use of gasket sealer shouldn't make any measurable difference