Electrical Component Inspection - TM-10-3930-631-120044

TM 10-3930-631-12

c. Cleaning and Inspection. Clean contacts with a

fine file to remove rough spots and erosion. Replace

contacts when inspection reveals silver facings are

almost-worn through.

CAUTION

Do not file or clean contacts while they

are installed in the contactor. Filings

could cause damage to the electrical

system.

d. Installation. Refer to figure 4-11 and install the

contacts.

4-29. Electrical Component Inspection

a. General. The following components should be

inspected periodically to maintain the truck in a

serviceable condition. Any damage, wear, or conditions

found that warrant replacement of the component should

be brought to the attention of direct and general support

personnel.

b. Drive Motor Brushes. Remove the drip pan,

and the floor plates. Remove the screws securing the

rear band and remove band from motor. Brushes will

appear through inspection hole in the field yoke (B, fig.

4-12). Inspect brush condition and commutator for wear

and damage. Check spring for cracks, damage, and

unserviceable conditions. Install rear band to motor.

Install drip pan and floor plates.

Figure 4-12. Brush location.

4-17