Figure 3-79. Receptacle (slave) electrical connector,
Figure 3-78. Starter motor brush replacement
removal and installation.
(3) If engine shuts down before tachometer
(3) Throttle spring tension is adjusted in a
indicates 1,920 RPiM, overspeed governor requires
similar manner by adjusting screw on back side of
adjustment.
overspeed governor. Tighten adjusting screw against
d. Adjustment.
bracket to increase tension, backoff screw from bracket
to decrease tension.
(1) If engine shuts down before tachometer
3-95. Wiring
indicates 1,920 RPMI, increase distance between head
of the adjusting screw (fig. 3-83) and microswitch arm
a. General. Crane electrical system consists of
by turning adjusting screw counterclockwise then
wiring of varied types, including harness, single wires,
moving adjusting nut toward throttle lever. Repeat
and conduit protected circuits between junction boxes.
adjustment, by trial and error, until engine shuts down at
Caution:
Keep all wiring free of
1,935 + 15 RPIM.
grease, oil, and accumulations of
dust and dirt. Grease and oil will
(2) If engine does not shut down when
cause
rapid
of
tachometer indicates more than 1,950 RPM, decrease
insulation, and excessive dust
distance between head of adjusting screw and
accumulations will speed grounding
microswitch arm by backing off adjusting nut, turn
at cracked insulation of electrical
adjusting screw clockwise, then move adjusting nut
leads.
toward throttle lever. Repeat adjustment, by trial and
b. Testing. Individual electrical leads may be
error until engine shuts down at 1,935 t 15 RPM.
tested for continuity by use of a multimeter or
3-92
