Clausing 4904 refresh

[DeadGuyAle]

Started disassembly of the apron

Exterior parts cleaned up and ready for paint removal



Apron comes off with four bolts from the top of the saddle. There are two locating pin's also.
Lead screw can be pulled through from the left to remove now.

Lots of cleaning ahead

 

[DeadGuyAle]

Lightly worked some of the raised areas on the cross slide with Arkansas stones.
Overall surface is in much better shape so good enough for no.

 

[DeadGuyAle]

Apron is apart and cleaned up


Cataloged everything and matched up the assemblies

Down to the last parts

 

[DeadGuyAle]

Few notes on the various apron assemblies
The pin on the end of the cross feed engagement lever is mushroomed at end to retain it.
No way to disassemble with out creating a bit of additional work. I just let it be and taped around things.


There were thrust washers that were not on the parts diagram so attempted to document and keep together in the correct order.



Nut holding the clutch plates together were slightly beyond finger tight so reasonably easy to get apart for cleaning.

 

[DeadGuyAle]

Worm bearing

Worm, worm bushing and casting.
Worm, worm bushing and worm bearing have seen better days. Collectively there is about .012 of play on both ends.


Clausing has the worm and bearing, bushing is discontinued.
tech support provided a copy of the original drawings for the bushing.




Got a 3" length of 660 bronze along with other needed bushings from McMaster-Carr

 

[DeadGuyAle]

New Worm, worm bearing and key from Clausing. Need to turn the new bushing then start reassembly.

Onto the next phase of refurbishment Cabinet, motor, mount and c-drive assembly


c-drive bearings were shot and NOS sourced from e-bay
Cleaned up with new bearings installed.

 

[DeadGuyAle]

4904 model was 3 phase from Clausing. At some point (1999) it was retrofitted with a single phase Leeson as a point of reference


Cabinet interior, there are two guide pins that align the door when closing. You can see one on the bottom right with a rusty foam pad. Frame is tapped for these.


Motor mount assembly

 

[DeadGuyAle]

More cleaning, paint work on the motor cabinet and parts. Pulled the badging and scrubbed the cabinet down.





Various mount and drive parts ready to go back together
And more to be painted

 

[DeadGuyAle]

Finished turning the worm bushing and got the assembly back together.
New worm and worm bearing from Clausing



Inset the bushing a couple thousands to take up for wear on the end of the housing that the worm rides against. Other than that came out like new!

 

[Ben17484]

I’ve enjoyed following your progress. Looking good. Do you have a plan as to when you want it useable by?


Sent from my iPhone using Tapatalk