- Joined
- Jan 20, 2016
- Messages
- 173
I have a 70's Boyar Shultz Deluxe with the automatic lube pump. Have noticed that the pump does not seem to be lubing the machine like it used to be (no excess oil anywhere after I last cleaned it). Took all the guards off and the table to check the ways. Noticed that nothing coming out the top tube that drips on the top of the elevating bevel gear, nothing on vertical ways for spindle elevation, 2 of 4 holes on the V way for the table have oil, 1 of 3 on the table flat way has oil. Pulled the saddle off to check underneath. Does not seem to be any oil dripping down onto the cross screw/nut (supposed to collect at bottom of V way and drip on down another drain hole).
I started disconnecting the compression fitting oil lines and blowing them out with air to see if the lines are blocked. Appears that all of the lines are open, but the metering valves that screw to the machine may be blocked completely (can't force anything thru with air in either direction) or partially blocked. I managed to strip one of the 4-way rotated Tee cast aluminum (or zinc?) distribution fittings taking the compression sleeves off/on. Never saw anything that looked like it before, and sure enough nothing on the web to match. I am in the process of making a new one.
Can't figure out what to do with the pump to check it. No name, p/n or markings on the lube pump. I assume it was Bijour, but am just guessing. Can't find pictures of anything that looks like it on the web. Pump is full to top of sight glass with hydraulic oil, and shaft is turning in correct direction. I seem to remember that the little plunger would lift periodically (every couple of minutes) which would then force some minute amount of oil out. Nothing happened with the plunger for the 15 minutes I check ran it. Is there any way to adjust the frequency of the pump plunger lifts?
That Boyar Shultz design was copied by several others back in late 70s / early 80s (MSC, ENCO, Chevalier, Sharp, etc), so must be a fair amount of grinders with those pumps still out there. Anyone ever had the pump apart before? Anything to fix in there or is it toast?
Recommendations on cleaning or replacing the metering valves?
I started disconnecting the compression fitting oil lines and blowing them out with air to see if the lines are blocked. Appears that all of the lines are open, but the metering valves that screw to the machine may be blocked completely (can't force anything thru with air in either direction) or partially blocked. I managed to strip one of the 4-way rotated Tee cast aluminum (or zinc?) distribution fittings taking the compression sleeves off/on. Never saw anything that looked like it before, and sure enough nothing on the web to match. I am in the process of making a new one.
Can't figure out what to do with the pump to check it. No name, p/n or markings on the lube pump. I assume it was Bijour, but am just guessing. Can't find pictures of anything that looks like it on the web. Pump is full to top of sight glass with hydraulic oil, and shaft is turning in correct direction. I seem to remember that the little plunger would lift periodically (every couple of minutes) which would then force some minute amount of oil out. Nothing happened with the plunger for the 15 minutes I check ran it. Is there any way to adjust the frequency of the pump plunger lifts?
That Boyar Shultz design was copied by several others back in late 70s / early 80s (MSC, ENCO, Chevalier, Sharp, etc), so must be a fair amount of grinders with those pumps still out there. Anyone ever had the pump apart before? Anything to fix in there or is it toast?
Recommendations on cleaning or replacing the metering valves?