Harrison M250 Restoration

[R-D-R]

Thanks @Carl I’ll wing the clutch like you. I got an hour in early this morning before the family woke.

Screw, drive bar and saddle gearbox all back on and seems nice and smooth (no Lubrication yet) I then started rebuilding the side change wheel area.

 

[Dieselman 63]

Shocking masking with the red paint on the changewheel area :P

Otherwise very nice!

 

[R-D-R]

LOL its been sorted :-) came off pretty easy I left the masking tape on whilst I was on holiday which I regretted too! noticed the bleeds and the square bit this morning. Theres a few other bits elsewhere and the red in the bridges on the bed needed bringing close up under the ways I had masked too low down.

 

[R-D-R]

Also got to sort the light rusting inside the main spindle, plan is to run it low speed and brush it out. Want to try and get the motor on tomorrow if I have time and run it low speed dry briefly to make sure no bloopers then I can fill with oil.

 

[R-D-R]

motor components rebuilt and motor mounted this morning

temporary wire I have some appropriate wire archived somewhere along with some steel kopex and glands

pulley and new belt on, that large red pulley wheel is bugging me it was in decent condition so I left it but clearly the red isn't the same as the other red!

 

[Carl Wilson]

Looks fantastic. If you need some 4 core cable for your motor, I have lots. Let me know.

 

[R-D-R]

Thanks I should have some cable somewhere I just need to dig it out I’ll let you know :-)

Got another hour in today, I now have more bits on the lathe than the workbenches :-)

Fired it up dry, all ran smoothly and functioned as should so I’ve filled the gearboxes. I need some more oil the manual says 1L for the main box but that’s know where near, it was about an inch off the bottom of the sight. I’ve put 2 litres in and it’s still not registering so will order another 2.

Just sizing up toolpost above need to attatch it to the lathe somehow with what I have in order to machine a proper fix.

 

[Dieselman 63]

Is there a splash guard for the motor like on mine? Stops the motor getting sprayed with oil off the changewheels and fits the profile of the guard. I see some locating holes, and it wouldn’t be too much work to make on yourself.

 

[R-D-R]

Not as such there’s another assembly to go on that covers some of the Motor which uses those holes. It’s for one of the interlock assembly’s.

 

[R-D-R]

Here you go some photos I took before stripping

It kind of protects it if you look from the back

 

[R-D-R]

Built up a bit more this morning

More of the change wheel area

Cover rebuilt and interlock adjusted, need to machine a knob to hold it on. Using a temporary bolt.

Next job clean gasket on top of the gearbox so lid sits nice and neat.

 

[R-D-R]

Got the tool posted mounted with a modified fencing bolt, couldn't resist having a go I made a round thing rounder :-)

 

[R-D-R]

Quick video of it cutting

 

[slim_boy_fat]

Well done, looks like it's giving a good finish .

 

[R-D-R]

Foot stop back on that was a git, you know when somethings so simple it becomes difficult this was it for me took 3 goes to get it right!

 

[Carl Wilson]

It's looking really good now. Fantastic to see it running. They are brilliant lathes. You are going to get your money's and time's worth out if it, no doubt.

Next is the DRO!

 

[R-D-R]

Thought I would start assessing the lathes accuracy as I'm conscious I have had it in bits and there are many areas you can tweak and calibrate the Lathe. The one thing I haven't touched is the Spindle so thought best to check that first then work from there. I am no expert and I'm guessing on how to check for problems, any pointers or checks I can do please chip in.

I setup a indicator in a tool holder and ran it against the spindle. Immediately I realised I need to clean the crud off and polish it up as the crud's tweaking the needle along with the scratches but as far as I can see its not running out significantly (dial is 0.002mm graduations) I need to remove chuck and do it on the face too I guess.

Before I get to the ways I need to get the feet on the lathe, I have some standard m12 250kg feet at the moment I may look or some proper machine feet. I then need to move it off the garage flooring to its home where it will sit directly on the concrete. I can level it up and then check the Ways for accuracy.

I still have to sort the electrics but have a bunch of components on back order (braking unit for VFD and some switches) so thought I would do this whilst waiting oh and clean up the spindle and restore the chuck!

 

[Seadog]

No video

 

[addjunkie]

Dont go getting too technical.

Put a piece of steel in the chuck, sticking out about 2 inches. The take a cut on power feed. Mic both ends of the cut and check the difference.

If its not bad, park your machine and level it up and try again. Better or worse.

If its miles out time to start investigating and asking for help

 

[R-D-R]

Thanks @addjunkie I'll give that a go. I may be over complicating it, seeing the way the slides work with all the calibration adjustments that I pulled apart I guess i'm just looking to get it back to as best it can be but any quick and easy methods ill take !

@Seadog the video should work now, I hadn't hit publish.