Baldor Motor Repair

Modified on 2009/01/13 00:26 by joewells — Categorized as: Electrical

Here's some pics of digging into a Baldor motor to repair a bad centrifugal switch posted by Bob Vaughan {Reference:http://owwm.org/viewtopic.php?t=31506|http://owwm.org/viewtopic.php?t=31506}. In this example, the contacts were damaged and needed repair.

Remove the fan cover

Remove the fan cover


Remove the fan (be careful here)

Remove the fan (be careful here)


Remove the fan (be careful here)

Remove the fan (be careful here)


Remove the motor bolts

Remove the motor bolts


Mark where the end bells line up

Mark where the end bells line up


Knock loose the rotor from this direction

Knock loose the rotor from this direction


Here's what you should see inside. Note charred contact points

Here's what you should see inside. Note charred contact points


Knock loose the back end bell (Ok, ok, so its a different motor shown)

Knock loose the back end bell (Ok, ok, so its a different motor shown)


Here's the end bell

Here's the end bell


Here's the points that need filing, sanding, and otherwise smoothing out. Be careful not to bend the copper springs.

Here's the points that need filing, sanding, and otherwise smoothing out. Be careful not to bend the copper springs.


Set the motor upright on two blocks and insert the spring washer into the bearing housing

Set the motor upright on two blocks and insert the spring washer into the bearing housing


Carefully put the rotor back in

Carefully put the rotor back in


Carefully put the rotor back in

Carefully put the rotor back in




Gentle pounding should seat things

Gentle pounding should seat things


Tap on a stick to rotate end bells for proper alignment and assemble motor

Tap on a stick to rotate end bells for proper alignment and assemble motor