AR (Acoustic Research) turntable Hurst motor service
Channel: elvisandmick
Date: 2018-11-17

Like most of my YouTube videos, this video is simply a record of what I did in the course of figuring out an issue.  You're advised to skim through the video to see if there's something there for you.  You may find yourself bored to tears if you're looking for a particular bit of information but you just watch the video from start to finish. You've been warned.

The executive summary is this:

 1 - Dismount the motor and remove the back cap.

 2 - Thoroughly spray out the motor from the back using electrical parts cleaner (I used CRC 03180 - other products may work but I know that this one did).

 3 -  Blow out the motor using compressed air (air in a can).

 4 - Use a q-tip and the electrical parts cleaner to thoroughly clean the top of the motor bearing at its outer perimeter.

 5 - Relubricate the motor bearing by applying oil to the top of the motor bearing while the motor is running; form a pool of oil that entirely covers the motor bearing at its outer perimeter; allow the motor to run for about 24 hours with the oil pooled; turn off the motor and wipe off all oil from the top of the motor.

 6 - Remount the motor to the turntable, place the pulley *part way* on the shaft, put Loctite blue in the pulley inner diameter and slide pulley up and down to coat the Loctite on the upper motor shaft, then set the pulley at the proper height (I tried to *avoid* coating the entire length of the motor shaft in Loctite because that seems to be more than needed and may make future disassembly difficult).

 7 - Wait for Loctite to cure then put belt in place and test.


CRC Industries 03130 QD Contact Cleaner 
(https://www.amazon.com/CRC-Industries-03130-Contact-Cleaner/dp/B000RY5D0G/)

Sewing machine oil in bottle with Luer-lock needle
(https://www.amazon.com/Liberty-Oil-Synthetic-Lubricating-Machines/dp/B008QNQ2VE/)

Loctite 242 ("Loctite blue")
(https://www.amazon.com/Loctite-Heavy-Duty-Threadlocker-Single/dp/B000I1RSNS)