Emco Compact 5 Leadscrew Bush Slipping

[Simon FriendParticipant @simonfriend59221]

[Simon FriendParticipant @simonfriend59221]

Hi,

I'm currently trying to restore an Emco Compact 5 that had been stored out in the garage and needed de-rusting etc. I'm having problems with the leadscrew slipping. When you turn the handwheel, the bush rotates out of the back (see pic). Even if you tighten the grubscrew to the point of almost no movement, this still happens. Any ideas?

[Ady1Participant @ady1]

there may be 2 grubscrews

[Jouke van der VeenParticipant @joukevanderveen72935]

Is there a supporting ring between the bronze bushing and the bottom of the hole in the bed casting?

Please, have a look in the Emco C5 manual with exploded view in the spare parts chapter.

The exploded view shows the assembly.

Regards,

Jouke

Edited By Jouke van der Veen on 22/11/2022 18:50:23

[Simon FriendParticipant @simonfriend59221]

I can't find any more screws, and the manuals are no help. The only other thing I can come up with is that maybe there is supposed to be a part to lock the leadscrew from moving forward at the other end.

[Ady1Participant @ady1]

Drill a dimple into the bush and screw the grub into it?

[Jouke van der VeenParticipant @joukevanderveen72935]

There should be some but minimal play between bushing and handwheel, otherwise you clamp the bushing and rotate it together with lead screw and handwheel.

[Simon FriendParticipant @simonfriend59221]

Problem solved with a bit of elbow grease

The bush was stuck (accumulated detritus) to the handwheel so it was rotating when you turn the wheel. Tightened the grubscrew right up and applied some reasonable force to the handwheel and it came free. Seems fine now.

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