Tri leva grease and bar removal help

[choochoo_balooParticipant @choochoo_baloo]

Evening chaps. I need some Myford Tri-Leva assembly help.

1)Can someone recommend a replacement grease that was living on the recess around a roller bearing for the belt tensioner wheels (see photo 1). I have: {lithium, copper, machine tool, silicon, water proof} grease to hand.

I read somewhere that old (this must be a good 40 years old) grease should be replaced. Am I right?

2) How do I remove the round bar that pivots the belt tensioner arms. I removeda a grub screw fro the casting. It wont easily give. The dings on the big end (photo 3) suggest it's hammered in? I wanted to check so as not to crack the aluminum casting!

Thanks in advance.

Edited By choochoo_baloo on 27/03/2019 21:52:48

[choochoo_balooParticipant @choochoo_baloo]

[mechman48Participant @mechman48]

I would use high temp/pressure Lithium grease… wheel bearing grease would suffice, my 2p worth.

George.

[Ian S CParticipant @iansc]

When a fitting is held in place with a grub screw, check down the hole for a second one, the top one may be just locking the one that is actually doing the work. (I have not got one) I have heard of this situation on Myford lathes.

Ian S C

[Cornish JackParticipant @cornishjack]

Choochoo – have you got the Trileva manual diagram? If not I can copy and post here, if it helps?

rgds

Bill

[V8EngParticipant @v8eng]

I am less far into the process than yourself but looking at the assembly there is also a grub screw on the first locking collar/spacer, I think there may also be a flat on the shaft where that screw tightens on it (not 100% sure yet).

the large end on your Tri Lever shaft does look like it has suffered a bit.

Couple of photos here, one showing the grub screw in the collar plus one of the shaft end in fairly good condition.

Sorry about the odd pictures and text order!

Edited By V8Eng on 28/03/2019 19:23:28

Edited By V8Eng on 28/03/2019 19:29:03

Edited By V8Eng on 28/03/2019 19:48:54

[V8EngParticipant @v8eng]

Well I got a bit further with this today, pleased to say that there is vey little wear.

The shaft was knocked out using a soft (ish) drift slightly smaller than the shaft diameter with a central pimple to locate in the shaft end recess.

obviously plenty of support is needed under the casing I used a piece of old very hard wood with a suitably sized hole in it to allow the big end to go through.

A press of some sort might have been safer but I do not have ready acces to one.

have to say that the experience was rather nerve wracking knowing the the chance of getting a replacement housing would be pretty slim.

I have put up a photo of the shaft this shows the flats that the grub screws seat onto.

As the old saying goes all is entirely at your own risk and I am not to be blamed if it goes wrong!!!

 

Edited By V8Eng on 30/03/2019 19:55:14

Edited By V8Eng on 30/03/2019 20:03:41

[choochoo_balooParticipant @choochoo_baloo]

Posted by Cornish Jack on 28/03/2019 11:08:23:

Choochoo – have you got the Trileva manual diagram? If not I can copy and post here, if it helps?

rgds

Bill

Yes I have thanks Bill. According to that I have removed the only retaining screws. V8Eng has vindicated the removal – will have to knock it out after all.

Thanks for the offer though.

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