Figure 35. Rotor Assembly Current Draw Test Circuit.

TM 5-6115-465-34

NAVFAC P-8-625-34

TO 35C2-3-446-2

TM 06858B/06859D-34

NOTE

70° to 80°F (21 .1° to 26.7°C).

The brushes are excessively worn if 3/16 inch or less

(d) High current reading on ammeter indicates low

extends beyond the bottom of the holder.

resistance or a shorted rotor warning.

(14) Check brush spring tension. A force of 4 to 6

(e) Using an ohmmeter, check resistance across slip

ounces should move brush against spring.

rings. Resistance should be 7.5 to 8.0 ohms at an am

(15) Using an ohmmeter, test brushholder assembly

bient temperature of 70° to 80°F (21 .1° to 26.7°C).

as follows:

(10) Replace rotor assembly if inspection and test

(a) Attach one test lead to brushholder and touch

requirements are not met.

other lead to each terminal and each brush. There should

(11) Inspect voltage regulator connector, cover

be no indication of continuity between brushholder and

assembly, and voltage adjust for cracks, corrosion, and

any terminal or brush.

evidence of shorting or other damage.

(b) Check for continuity between each terminal and

(12) Inspect fuse holder for cracks, corrosion, and

its respective brush.

other damage. Check fuse for burned out condition.

(16) Replace brushholder assembly if inspection and

Check fuse for continuity if in doubt.

test requirements are not met.

(13) Inspect brush assembly for corrosion and ex-

(17) Inspect pulley for excessive wear at pulley

cessive wear.

groove, cracks, corrosion. and other damage.

US. GOVERNMENT PRINTING OFFICE : 1995 0 - 388-421 (02499)

3-10

Change 10

PIN:

013547-010