Herb Berger
08-01-2009, 8:46 PM
:confused:I am currently restoring a 1980's vintage Powermatic 66 TS. I completely disassembled the machine. Stripped, sanded, and repainted all of the castings. Reassembled the castings. Installed new arbor bearings. Installed a new Lesseon 3 HP 1 PH 240 Volt Motor. Three new Power Twist Belts. Had the tables resurfaced. New start switch. Powder coated the cabinet.
I have the saw assembled to the point that I have put power to it. In doing so I have found that the arbor pulley, the arbor housing, arbor shaft and the motory pulley get verry warm. (At least I think it is very warm) After a 5 minute run with a blade in place the arbor housing, and arbor shaft rises in temperture from 75 degrees F to 120 degrees F.
I checked the pulley alignment and found the alignment to be dead on. The arbor assembly is a bit stiff, but not what I feel to be overly stiff. (Feels like what I believe new bearing would feel like. Smooth turning with just a bit of a drag.) The arbor has no play in any direction. I put the table top on and checked the arbor run out. It is less then one thousandth of an inch. The belts are not excessively tight. 3/8 inch or more deflection on both sides of the belt.
Does anyone know if this condition is normal? If it is not, any idea what may be causing the problem. I'm thinkning maybe the new belts need time to wear in.
I have the saw assembled to the point that I have put power to it. In doing so I have found that the arbor pulley, the arbor housing, arbor shaft and the motory pulley get verry warm. (At least I think it is very warm) After a 5 minute run with a blade in place the arbor housing, and arbor shaft rises in temperture from 75 degrees F to 120 degrees F.
I checked the pulley alignment and found the alignment to be dead on. The arbor assembly is a bit stiff, but not what I feel to be overly stiff. (Feels like what I believe new bearing would feel like. Smooth turning with just a bit of a drag.) The arbor has no play in any direction. I put the table top on and checked the arbor run out. It is less then one thousandth of an inch. The belts are not excessively tight. 3/8 inch or more deflection on both sides of the belt.
Does anyone know if this condition is normal? If it is not, any idea what may be causing the problem. I'm thinkning maybe the new belts need time to wear in.