Here is how I open the Pyro motor to replace bearing.
The same can be used to replace the motor shaft.
1. First thing you need to remove the circlip (c-clip) with a spring clip plier.
2. Then you need to remove a few shims (there may be 3 to 5 pieces), follow by a spring spacer.
3. Next, to pull the motor can (rotor) away from the stator (the winding block).
To make thing easier, I slide in two screwdrivers into the stator (be careful not to damage the motor winding)
and place the motor near the table edge (see picture below).
I then hold the two screwdrivers with one hand and hold and pull the motor can away with the other hand.
4. Once you pull the stator and rotor apart , you can then remove the bearings on the stator.
You can knock out the bearings using a screwdriver from the inside.
For the bottom bearing, you need to remove the two screws nearby.
Main Bearing: 6900ZZ
ID = 10mm
OD = 22mm
Thickness = 6mm
Bottom Bearing: 6800ZZ
ID = 10mm
OD = 19mm
Thickness = 5mm
5. To remove the motor shaft, you need to knock out the locking pin at the bottom of the rotor.
The same can be used to replace the motor shaft.
1. First thing you need to remove the circlip (c-clip) with a spring clip plier.
2. Then you need to remove a few shims (there may be 3 to 5 pieces), follow by a spring spacer.
3. Next, to pull the motor can (rotor) away from the stator (the winding block).
To make thing easier, I slide in two screwdrivers into the stator (be careful not to damage the motor winding)
and place the motor near the table edge (see picture below).
I then hold the two screwdrivers with one hand and hold and pull the motor can away with the other hand.
4. Once you pull the stator and rotor apart , you can then remove the bearings on the stator.
You can knock out the bearings using a screwdriver from the inside.
For the bottom bearing, you need to remove the two screws nearby.
Main Bearing: 6900ZZ
ID = 10mm
OD = 22mm
Thickness = 6mm
Bottom Bearing: 6800ZZ
ID = 10mm
OD = 19mm
Thickness = 5mm
5. To remove the motor shaft, you need to knock out the locking pin at the bottom of the rotor.