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    1970 Modular Drive 10EE Electrical Problem - overspeeding

    OK, I'm not all that familiar with Modular drives or tube electronics, but I have a question. You say: "The FL relay has been replaced with an Automation Direct 120 VAC ice cube relay." What's the part number of the relay and is it actually an AC relay? (The shunt field is a DC circuit.) The...
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    Resurrecting 1960 10EE with 460V Sabina drive

    That gear is on the end of the threading output shaft of the headstock. It sticks into the back side of the end-gear housing. You won't be able to remove the gearbox with that gear in place.
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    Van Norman #26, mounting Bridgeport J-head

    1-1/2" seems like overkill for the vertical plate, but if you have some on hand, why not? However, any thickness you add to the front of the ram will move the J-head's spindle farther from the column. You'll want to make sure that there's enough Y-axis on the table to have some useful work envelope.
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    Van Norman #26, mounting Bridgeport J-head

    I did some searches for Comet J-heads and all I came up with were Comet knee mills, which appear to be a Bridgeport clones. It sounds like you may have the head from one of those machines. There are several sellers on eBay that have Comet manual copies. This item (link), the manual for a Comet...
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    Van Norman #26, mounting Bridgeport J-head

    Is this just the head off of a Comet milling machine, or did Comet sell a J-head clone? What type of mounting setup does the head have? Photos please.
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    10EE Apron oiling. What parts are missing and why is this broken?

    The missing Bijur valve is a pressure relief valve (15PSI, IIRC), not a metering device like the rest of the Bijur fittings. Monarch should be able to provide you with the correct valve.
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    Van Norman 2RQ overarm arbor support won't move

    Stay away from hammers. Try the bar clamp first.
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    lever on 10EE?

    No, not particularly rare. What you have is a nice example of an ELSR machine: The horizontal control rod through the apron, the levers, the up/down motion of the levers causing the control rod to move sideways, that's all the same as the MLSR machine in the first post. But what happens when...
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    Monarch 10ee sight glass installation

    This post has a diagram that shows the stack up: https://www.practicalmachinist.com/forum/threads/headstock-flush-with-kerosene-sight-glass-removal.194750/post-1259379
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    lever on 10EE?

    No, this is NOT an ELSR (Electric Lead Screw Reverse) machine. It has the very rare Mechanical Lead Screw Reverse (MLSR) option. Whereas ELSR simply turned off the spindle motor when the lever was moved (either by the operator's action or by hitting one of the stops), this option leaves the...
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    Van Norman 2RQ overarm arbor support won't move

    I've never seen one of these in person, so I can't be a lot of help. The parts drawing on page 19 doesn't show a rack mechanism, like the overarm, nor does it show a gib. My guess is that it's stuck in position from sitting too long without moving. You might try backing off the binder bolts...
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    Van Norman 2RQ overarm arbor support won't move

    Here's a link to a manual for the 2R: http://vintagemachinery.org/pubs/detail.aspx?id=15191 There are two binders and a shaft for the crank that runs the rack gear to move the ram. They are located at the top of the column, on the left side and above the electrical access panel. The same hand...
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    Cincinnati-Bickford 9-3 Electrical Diagram RAD.

    You don't have a "common" or neutral wire coming into the machine: You have three incoming "hot" wires, which I assume come from the RPC and some ground wires that aren't connected. It's dangerous to use the ground wires for "common", so I hope that's not what you wound up doing. It should be...
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    First Lathe: 1942 Monarch 14C

    You can get a copy of the issue containing the article with all the photos and drawings from the publisher for $8.50: https://secure.villagepress.com/store/items/detail/page/4/item/2400
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    First Lathe: 1942 Monarch 14C

    Yes, sadly, Harry has passed away. He wrote a nice article that includes dimensioned drawings for three different sizes of follower rest, using the same design. Here's a link that includes photos and information about the article...
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    Cincinnati-Bickford 9-3 Electrical Diagram RAD.

    There's not really very much going on here: You have two 3-phase motor starters (one for forward, one for reverse), with some sort of interlock to keep them both from operating at the same time. An industrial electrician doesn't need a wiring diagram to understand what's going on here. Can't...
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    Old style 10EE single point follow rest dimensions

    That's not a part number. It's probably the serial number of the 10EE that it was shipped with. Where did you find the number?
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    Flat Belt Replacement

    Flat belts for the main drive were an option, but I don't think that Monarch ever went to them as their standard belt type.
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    10ee Spindle weep hole leaking / revisit....

    Thanks Zap. I've annotated one of your photos from post #28: Can you verify the following: Hole #1 (circled in red) is the one and only overflow from the front bearing cavity into the center of the headstock, coming out in the general vicinity of the tachometer gear. Hole #2 (circled in blue)...
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    10ee Spindle weep hole leaking / revisit....

    Dave, Did either of those machines have a single-reservoir headstock? I specifically asked Zap about the oil passage in post #27. In post #28, he posted a photo of a straw in the 6 O-clock oil passage: This is what the drawing shows. Here's another one of his photos from post #28, showing the...
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