Clausing Colchester oil pump belt

[Defender92]

Is there any reason Colchester used this “rope” like belt?? And is there any reason why I shouldn’t replace it with this accu-link belt???

The old belt was barely hanging on. Hopefully it’s not supposed to be loose for a reason.




Also…. My coolant pump isn’t pumping anything. I can’t tell if it’s actually running or not when I turn the switch on. Does it need to be primed? Is there a fuse??

Any recommendations on a coolant or cutting fluid to replace with??

 

[markba633csi]

It should make some sound- check for power
The pump could be gunked up and frozen

 

[mksj]

I would use a good quality notched belt, like the Gates Tri-Power. They wrap well around pulleys and do not shed belt fragments, and for that matter I would replace the drive belts as they are probably stiff and glazed. You need to determine where the coolant pump is and it is an easy enough process to check if it is getting voltage with a voltmeter. They often will freeze up over time from rust and neglect, as a hobbyist almost nobody uses them. There is also a coolant contactor which should latch close when the coolant pump switch is activated. Last but no least, coolant pumps can be single or 3 phase, so check the motor plate. They also may not run well off a static converter.

If you have a pressurized lube system, then you probably have a filter that also needs to be replaced, and probably want to flush the hole system and make sure the bearings are getting oil to them. On a car I sometimes use and oil flush (I believe is kerosene) which is added to the oil to rum the vanishes and gums, you run it a short time and then empty the oil. I have used in in cars and it works well. I would go through the hole lathe include the carraige oil pump to the ways which these often have. I have them on mine and use Way oil #2 in the carriage.

 

[Janderso]

Oops,
Coolant pump not oil pump.
Disregard my comments.
You’re not getting any oil flow up top?
The site glass should show instant oil presence when turned on.
The pump will work either direction.

 

[Defender92]

Oops,
Coolant pump not oil pump.
Disregard my comments.
You’re not getting any oil flow up top?
The site glass should show instant oil presence when turned on.
The pump will work either direction.

Oh yeah I’m getting good oil presence when turned on. I was just wondering if Colchester used a loose belt on the oil pump intentionally. Like it was designed to slip or something under a heavy load? I’ve never seen a rope belt like that before. The accu-link belt I installed is nice and snug. I was worried it wasn’t designed to be.

 

[mksj]

It shouldn't slip. There is a nice discussion of oil changes and oils to use in the link below, appears some versions have a tensioning unit for the oil pump belt. You might check the manual, and/or get one. Evidently some versions have different oil distribution systems in the headstock and it takes some time for everything to get the oil distributed to the gears, so one recommendation was to get the oil flowing before engaging the headstock.

 

[Defender92]

It shouldn't slip. There is a nice discussion of oil changes and oils to use in the link below, appears some versions have a tensioning unit for the oil pump belt. You might check the manual, and/or get one. Evidently some versions have different oil distribution systems in the headstock and it takes some time for everything to get the oil distributed to the gears, so one recommendation was to get the oil flowing before engaging the headstock.

Thanks! And I do need to get a manual. I did see a drawing with a tensioner pulley but not on mine. I will sick with the accu-link belt

 

[Janderso]

It shouldn't slip. There is a nice discussion of oil changes and oils to use in the link below, appears some versions have a tensioning unit for the oil pump belt. You might check the manual, and/or get one. Evidently some versions have different oil distribution systems in the headstock and it takes some time for everything to get the oil distributed to the gears, so one recommendation was to get the oil flowing before engaging the headstock.

I agree,
After starting the motor, it taks a good 45-60 seconds for the cool headstock oil to feed to the main spindle bearing.
I enjoyed watching your video a couple years ago.