housing (C, fig. 16) and install items
(6) For armature and field coil test, refer
(l-5, D, fig. 16) in reverse of the
to TM 5-764.
numerical sequence.
(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
secure with screws (1, C, fig. 16) and
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
as illustrated on B, figure 16.
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.
a. Reassembly.
( 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
sequence as illustrated on E, figure 16.
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-
and 6-18, D, fig. 16) in reverse of the
c u r e with bolt (1) and washers (2).
numerical sequence.
b. Installation. Install the engine starting
( 3 ) Insert the armature and drive assem-
motor (TM 5-3820-205-20/l).
bly (D, fig. 16) in the motor drive
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
57. General
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
clockwise one-sixteenth
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
engine.
( 2 ) above.
(5) Connect the throttle control cable (TM
5 8 . Overspeed Governor Assembly On-
5-3820-205-20/l).
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
governor.
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).
(TM 5-3820-205-20/l).
( 2 ) Start the engine and increase the en-
c. Disassembly. Refer to figure 17, and dis-
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)
before
removing the body assembly (31).
ter reading 1,530 rpm.
AGO 8498A