10EE Oil Pump Operation and Flow????

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Will McRay

Aluminum

Joined

Dec 31, 2017

• Jun 8, 2019

• #1

I have a 10EE 1947 MG Lathe. I pulled the gear head cover off and saw two oil lines that feed the top gear which I believe are the threading gears. Whether in the feeds or threads position, i don't get any flow to the gears. I beleive there is also an oil feed system for the cross slide. How does this work? I can't seem to find anything on this forum with what I chose to search with.

Can someone explain to me where the oil pump is, how it works and what it sends oil lubrication to please?

Thanks for all this groups help in advance!

Will

 

J

Jaymce

Aluminum

Joined

Jan 6, 2013

Location

New England

• Jun 8, 2019

• #2

Look for some posts on carriage rebuilding. I think that's where I saw some info about it.
Apparently it is common for these to fail from clogged oil tubes, pump failure or pump cam failure.
If memory serves me the pump is located at the bottom of the carriage
Perhaps drain the oil from that location and make sure it is the proper weight.

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rakort

Hot Rolled

Joined

Apr 27, 2011

Location

Central Wisconsin

• Jun 8, 2019

• #3

Oil pump is located in the bottom of the apron.

There is no forced / pumped oil in the headstock...its all splash / sling supplied

Here is about where I started rebuilding my apron and lube system.

New to me Monarch 10EE just arrived!

 

H

hitandmiss

Titanium

Joined

Jul 31, 2010

Location

Rochester, NY USA

• Jun 8, 2019

• #4

I posted pictures at post #9 on this thread when replacing the units on my round dial.

https://www.practicalmachinist.com/...task-gotten-any-better-314397/?highlight=lube

Bill

 

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Will McRay

Aluminum

Joined

Dec 31, 2017

• Jun 9, 2019

• #5

thank you everyone for the replies. I am still baffled on the two copper lines in the head stock then that feed the feed gears. I am going to sit down and do a buch more reading and try to find a suitable replacement for the belts as well.

Thanks again.

W

 

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Will McRay

Aluminum

Joined

Dec 31, 2017

• Jun 9, 2019

• #6

Great information on the belts. I will pull the cover off again and get a picture of the two lines in the head stock.

 

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Will McRay

Aluminum

Joined

Dec 31, 2017

• Jun 9, 2019

• #7

Here are some pictures. This is a 1947 square dial 10EE model with MG.

 

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Will McRay

Aluminum

Joined

Dec 31, 2017

• Jun 9, 2019

• #8

50 to 2500 rpm. Nothing special that I can see. The piping seems to be all factory installed.


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C

Colt45

Hot Rolled

Joined

Nov 27, 2004

Location

SLC, UT

• Jun 9, 2019

• #9

Rakort is right on- the factory headstock lubrication is oil slingers and splash-might take a few minutes of running the spindle to get the system primed and oil coming out. Could also be that you have some clogged oil lines. The pump in the apron feeds the carriage and cross slide. .
Piping and bracket looks like factory square dial oil system fittings to me.

 

Last edited: Jun 10, 2019

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Cal Haines

Diamond

Joined

Sep 19, 2002

Location

Tucson, AZ

• Jun 10, 2019

• #10

Will McRay said:

Here are some pictures. This is a 1947 square dial 10EE model with MG.
...View attachment 258436

Click to expand...

I think what's going on is that the little L-shaped piece on the left side of your photo (above) is part of a reservoir that collects oil splashed up by the gears and directs it to the three tubes that run away from it. You can verify that by using a wire to probe the end of the tube that goes to the rear bearing. If you fill the L-shaped reservoir, you should see it drain down. It looks like the end of the tube over the shifter is open, so I would expect to see oil drip out there.

FWIW, my '43 round-dial has a 4000 RPM spindle and not provision to lubricate the sleeve bearings.

Cal

 

D

donie

Diamond

Joined

May 17, 2003

Location

Walla Walla Wine and Wild Turkey

• Jun 11, 2019

• #11

In the second photo, the tubes are coming from a tray shaped casting that has a sharp edge against the tach drive gear, seen at left-photo2.
Oil climbs up the side of the drive gear and is scraped off by the sharp edge of the tray, then flows down the tubes.
So, there is some control on how much oil by how far the gears side is from the sharp edge on the tray, or, if the gap between the tach drive gear and the edge of the tray is too much, it will not get oil.

 

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Will McRay

Aluminum

Joined

Dec 31, 2017

• Jun 11, 2019

• #12

I certainly have some plying to do and see if I can get some flow from these lines. Would be nice to understand just how this works.

Thanks all!




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rakort

Hot Rolled

Joined

Apr 27, 2011

Location

Central Wisconsin

• Jun 11, 2019

• #13

Well I think you got your answer........sling, fling, splash, climb, etc the oil should get up there and drain down the lines. Likely old gravity drain lines may need some attention to continue draining especially if the ends have been pinched off to regulate flow between the available drain paths.

Will McRay said:

I certainly have some plying to do and see if I can get some flow from these lines. Would be nice to understand just how this works.

Thanks all!




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Click to expand...