- You troubleshoot the spindle lubrication system.
- You have a Bijur Mechanical or minimum lubrication spindle oil-pump.
- You plan to install a replacement spindle.
Make collection bottles from empty 16-ounce (473 ml) water bottles.
Make sure the inside of the water bottles are dry. Make sure there are no cracks or leaks in the bottle.
Drill a 1/4" hole  and a 1/16" vent hole  in the cap of the water bottles.
Insert the spindle oil tube  through the 1/4" hole in the bottle caps .
Loosely wrap a cable-tie  around the tubing approximately 3" (76 mm) from the end of the tube . This makes sure the tube does not fall out.
For the Bijur mechanical-oil pump lubrication systems, make sure that (6-10) drops of oil are visible in the drip-sight glass for each pump cycle
For the minimum lubrication oil pump systems, make sure that (3-5) drops of oil are visible in the drip-sight glass for each pump cycle
After 4 hours, look at the bottles.
If the spindle-lubrication system operates correctly, oil is in the bottom of the collection bottles.
Compare your results to the image shown here.