TM 55-1680-320-23 & P
TABLE 3-1. INTERMEDIATE PREVENTIVE MAINTENANCE CHECKS AND SERVICES (cont)
lTEM TO BE
D W M A H
Broken wires, strands, bird caging, kinks or flat
spots are cause for cable replacement. Replace cable
in accordance with Task 2-60.
Visually inspect for evidence of overheating or
shorting. Check electrical comector for bent, broken
or tissing pins. Check electrical wiring for frayed
or broken insulation. Check motor installation for
security. Inspection shall be in accordance with Task
2 - 4 9.
Visually inspect for cuts, tears or deterioration.
Replace in accordance with Task 2-50.
Limit Switch Drive
Visually inspect for cracks, nicks, corrosion. Check
electrical wiring for frayed or broken insulation.
Check earns for excessive play. Check sprocket for
wear, nicks, burrs and chipped spline teeth.
Inspection shall be in accordance with Task 2-53.
Check adjustment of switch. Adjust limit switch in
accordance with Task 2-54.
Test limit switch circuit using limit switch tester in
accordance with Task 3-39. Check clearance
between cam (not cam lobe) and actuator roller.
Clearance should be 0.045 inch (0.112 cm). Adjust
clearance in accordance with Task 3-38.
Refer to the illustration on page 2-127. Remove
screws (11 ) and plate (8). Visually inspect for cracks,
dents, nicks. Inspect drum grooves for distortion or
abnormalities and uneven wear. Check cable kicker
for loose rivits.