Frame and Field Assembly Procedure

SD-255 Components:

1. Assemble the frame and field assembly onto the armature.
- Clean the contact faces of the brushes and the commutator with a soft cloth.
- Push the brushes into the brush holders and hold them in place while installing the frame.
- Align the scribe mark on the frame with the scribe mark on the drive end frame.
- Release the brushes onto the commutator, making sure all four brushes move freely and contact the commutator.
2. Assemble the brake washer to the armature assembly.
3. Assemble the drain tube to the frame, if it was removed.
4. Assemble the drive end frame to the field frame.
- If the drive end frame bearing shows no lubrication or looks damaged, replace it.
- Recess the new bearing 2 mm (0.08 in) into the housing. The bearing is pre-lubricated. Do not add any lubricant.
5. Assemble the identification tag over the hole in the drive end frame with the fluted end around the bearing well.

NOTE: Refer to Fastener Notice in Cautions and Notices.

6. Assemble the through-bolts in their original locations

Tighten
Tighten the bolts to 8.5 N.m (75 lb in).

7. Assemble the motor field lead over the motor terminal on the solenoid.
8. Assemble the field lead attaching nut.

Tighten
Tighten the nut to 11 N.m (95 lb in).

9. Assemble the solenoid shield onto the protruding ends of the solenoid attachment screws.
10. Assemble the shield attaching nuts.

Tighten
Tighten the shield attaching nuts to 8 N.m (70 lb in).