It's been a while but I'm finally getting around to clean this monster up. It's the last machine in my shop that isn't usable. I have the Tarry & pick knobs turning freely but still have some problems left. I found the LL service manual but it won't be here until Monday.
1) When the adjustable table trip hits the table reverse lever, it doesn't flip it all the way and the table slowly starts moving back the other way. The right side trip works great and Tarry works on both left/right sides.
2) The pick isn't working either. The knob turns freely and I can hear the detents but no automatic infeed.
3) spindle site glass is leaking a little bit.
4) ID motor is smoked, the wiring is melted inside and needs a complete overhaul.
5) the coolant pump is stuck.
Jhruska, my machine might be different because the oil tag says it takes 3 different oils and it doesn't have rapids. Extreme Pressure 300-350 SUS for the ways, 145-155 SUS for the hydraulic system & 100-110 Sus for the spindle.
Way Oil 350 SUS = ISO 68 (Is ISO 68 considered an EP oil?)
Hydraulic system Oil 150 SUS = ISO 32
Spindle Oil 100-110 SUS = ISO 22
Way oil, non Vactra, ie; 68 hydraulic oil may have the same viscosity as Vactra but the waxes are stripped out.
The table trips (reversing dogs) left and right get a lot of wear to the point where they no longer contact the reverse lever properly.
That might be the problem.
The coolant tank is pretty deep and holds a lot of swarf along with the coolant. It's a nasty job to clean. Expect to remove buckets of swarf. This might be the pump problem if you are lucky. Before blaming the motor check the connections, switch, ect. I would bring an electrician over from the other side of the shop, not the dark side, and we would 'ring' the connections as a test.
there is a separate pump for the Wheel Head (spindle). If the pressure is not within limits the Wheel head will not start.
Do not toss out the ID parts/motor.
My parts manual is not handy at the moment but I recall a solenoid behind the front cover on the right side. If that solenoid is shot the pick feed will not function. The pick feed is hydraulically controlled and the solenoid is part of the system. The solenoid can be rebuilt with a new coil. The pick feed is a time saver but if it is not working you are the replacement pick feed. Did the machine come with a free standing electrical cabinet?
There is a publication from Cincinnati; publication No. G-674-1
It is for operators of "Cincinnati Filmatic 12" 14" and 18" Universal Grinding Machines (Model LL). Get this if you can. It covers general operating instructions, specs and initial machine set-up and some maintenance and adjustments.
Check the three oil filter cartridges. If you are lucky the name of the manufacturer will be on one of them.
Clean spindle oil is important. Yearly oil change is recommended for the three oils. I thought the retainer for the sight glass is threaded on the O.D and it just screws into place. Could be wrong as this was so many machines ago.
John