Figure 5-30. Brush Wear Limits F10000RG-2

TM5-4110-234-14

TO 40R7-5-7-1

(8) Inspection of Brushes: When brushes are worn more than 0.3 inch, replace them. Figure 5-30 shows the

wear limit. See that the brushes move smoothly in the brushholders.

(9) Inspection for Brush Spring Tension: Measure brush spring tension with a tension meter (fig. 5-31). Push the

brush into its holder and take the reading just as the brush slightly projects from the brushholder. On a new brush the

spring tension should be 49 to 59 ounces (1.37-1.65 kPa).

Figure 5-31. Measuring Brush Spring Tension F10000RG-2

Compressed air used for cleaning purposes will not exceed 30 PSI (2.1 kg/cm2).

Do not immerse bearing equipped parts in cleaning fluid. Clean with a brush dipped in

mineral spirits. Do not immerse the overrunning clutch in cleaning solvent.

5-48