(6) For armature and field coil test, refer
to TM 5-764.
(7) T e s t t h e i n s u l a t e d b r u s h h o l d e r f o r
(4) I n s e r t t h e a s s e m b l e d m o t o r d r i v e
short circuits or grounds using a test
housing and the armature and drive
l a m p and test probes. Place the test
assembly in the starter frame and
probe on the brush holder and the
other on the frame. If the lamp lights,
w a s h e r s (2).
t h e r e is a short circuit and the starter
( 5 ) Reassemble the brush holder assembly
must be replaced.
in reverse of the numerical sequence
5 6 .S t a r t i n g M o t o r R e a s s e m b l y
(6) R e a s s e m b l e items (10-21, A, fig. 16)
a n d Installation
in reverse of the numerical sequence.
( 7 ) Install the brush and holder assembly
(B, fig. 16) on the end bell and reas-
(1) Reassemble the field coils, frame, and
s e m b l e items (4-9, A, fig. 16) in re-
pole shoes in reverse of the numerical
verse of the numerical sequence.
( 8 ) Install the assembled commutator end
(2) Reassemble items (3-11, C, fig. 16
frame on the starter frame and se-
c u r e with bolt (1) and washers (2).
b. Installation. Install the engine starting
( 3 ) Insert the armature and drive assem-
motor (TM 5-3820-205-20/l).
S e c t i o n V I . OV E R S P E E D GOV E R N O R ASSEM B L Y
(3) L o o s e n screws (1, fig. 17) and turn
the cap clockwise until the engine
The overspeed governor assembly is mounted
shuts-down, turn the cap counter-
on the side of the engine and is attached to the
inch a n d
t a c h o m e t e r . The governor is a flyweight-type,
tighten the screws, push reset button
incorporating a sensitive switch. As the speed
and adjustment is complete.
of the governor increases, the flyweights move
( 4 ) If the overspeed governor fails to stop
outward against the tension of the springs.
t h e engine at 1,650 rpm, loosen the
W h e n the engine speed reaches 1,650 rpm, the
screws (1) and turn the cap (12)
plunger in the flyweight assembly contacts and
c o u n t e r c l o c k w i s e to decrease speed.
actuates the sensitive switch stopping the
R e p e a t the procedure as described in
( 2 ) above.
(5) Connect the throttle control cable (TM
5 8 . Overspeed Governor Assembly On-
E q u i p m e n t Testing, Adjustment,
(6) If proper adjustment cannot be at-
Removal, and Disassembly
tained, repair or replace the overspeed
a. On-Equipment Testing and Adjustment.
b . Removal. Remove the overspeed governor
( 1 ) Disconnect the throttle control cable
a s s e m b l y (TM 5-3820-205-20/l).
( 2 ) Start the engine and increase the en-
gine speed until the engine speed gov-
assemble the overspeed governor assembly.
error limits the engine to a tachome-
Note. Release the retaining ring (22, fig. 17)
removing the body assembly (31).
ter reading 1,530 rpm.