4 hours ago, rum4mo said:

 

I think what he was meaning was to apply high strength (green) Loctite to the Helicoil external thread and using the fitting tool fit the Helicoil fully into the hole and probably snap off the tang, then fit the proper bolt into the new thread in the hub but make sure that it has a coating of grease on it to avoid it picking up any green Loctite and locking onto the Helicoil.  One thing though, I don't know the length of the Helicoil inserts relative to the material thickness of the hub area, after fitting the Helicoil full depth into the hub, there might be some length of Helicoil left out of the hub, cut this use flush with the hub surface, ideally the insert would be just short of the full thickness of the material when fitting into a through hole so that you don't distort/disturb the end of the Helicoil when fitting the bolt in.

 

Edit:- the plan with temporarily fitting the bolt greased is to force the Helicoil out as far as it will be in use before the Loctite has set, after that remove and clean grease off the inside of the fitted Helicoil and the calliper bracket bolt, after refitting the calliper bracket fit the new bolts with blue Loctite.

 

Exactly so.

9 hours ago, rum4mo said:

 

Maybe not for some people, but these Time Serts don't seem to have any built in locking element, so I'd expect anyone not wanting any trouble in the future, to use some strong retaining stuff.  In fact, at work, if we used TeeSerts, which are same as Time Serts but without the increased diameter at the top end, we always removed the hard nylon locking pellet and cleaned them up and applied a strong Loctite product for that job of locking them in.  On aluminium or mag alloy blocks, we used inserts that had 4 wedges to lock them in place - called KeenSerts.

 

I think that the timesert installation tool deforms the insert into the thread you have just created creating immense friction, this is the locking element in this case. I don't see any harm in covering it with green Loctite if you want to though, it would make me feel better I think

Edited 28 September, 20187 yr by SuperbTWM

Double post

Edited 28 September, 20187 yr by SuperbTWM

tripple post

Edited 28 September, 20187 yr by SuperbTWM

Thanks all.

 

Timesert, with green loctite it is. Web is littered with forums, all side with timesert but state helicoil is good, particularly if bolt is unlikely to be touched again.

 

I'll report back on success or not. 

Update

Was about to buy time sert kit and the FAQ stated that the insert cannot be cut down, at neither end. The length of insert exceeds the hub housing bolt threads. 

I'm going to buy a new hub housing.

45 minutes ago, bmbmdmb said:

Update

Was about to buy time sert kit and the FAQ stated that the insert cannot be cut down, at neither end. The length of insert exceeds the hub housing bolt threads. 

I'm going to buy a new hub housing.

 

That's understandable really as if you reduce the length of the insert or the thickness of the material in which its going into its not going to have the same strength so the manufacturer will not condone it.