TM5-6115-584-34
NAVFAC P-8-622-34
TO-35C2-456-2
CHAPTER 5
MAINTENANCE OF STARTING SYSTEM
Section I. DESCRIPTION AND FUNCTION
5-1. GENERAL
The engine is cranked by a 24 volt electric starter.
When the starter rotor solenoid is energized, the
solenoid core pulls in, shifting the pinion gear
into engagement with the engine flywheel ring gear.
The starting motor is protected from overspeeding
by an overrunning clutch. At the same time, con-
tacts in the solenoid close to provide a circuit
for the starter. Two 12 volt batteries in series
are used. The starting switch for this starting
circuit is located in the control cubicle.
Refer to the operator and Organizational Mainten-
ance Manual for starting and operating the set. A
blower wheel alternator is utilized to recharge
the batteries.
a. A new (Style II) gear-reduction electric
starter will be installed on engines manufactured
during 1990; and will be available as a replacement
when the original starter, (Style I) is no longer
available. The Style II starter are interchange-
able with the Style I starter.
Section II. MAINTENANCE
5-2.
a.
STARTER ASSEMBLY
Test on Equipment. Refer to the Operator and
Organizational Maintenance Manual.
b. Removal. Refer to the Operator and Organiz-
ational Maintenance Manual.
c. Disassembly; Style I (see figure 5-1)
(1) Remove nut (1) and lockwasher (2) from
solenoid (13). Remove nut (3) and lockwasher (4)
from brush assembly (21) terminal. Tag and remove
lead (5). Remove nut (6) and lockwasher (7) from
lower solenoid terminal, and loosen field coil
connector (8).
(2) Remove cotter pin (9) and pin (10) from
yoke (32). Remove screws (11), lockwashers (12)
and remove solenoid switch (13).
(3) Remove through bolts (14), lockwasher
(15) and remove back plate assembly (16) and
thrust washer (27). Remove nut (17) and lockwasher
(18) from brush assembly (21) terminal. Lift brush
springs (20) and remove brush assembly (21).
Remove the insulating washer set (19) from brush
assembly (21). With brush sprinq raised, remove
other brushes (26) from brush holder (24). Remove
screws (22), lockwashers (23) and remove brush
holder (24).
(4) Remove retainer (29), boot (30), pin (31
and separate pinion housing (28) and frame assem-
bly (25). Do not lose thrust washer (27).
(5) Remove yoke (32) and remove armature (33)
and drive assembly (35). Remove lock ring and stop
(34) by forcing stop toward armature until lock
ring becomes accessible. See figure 5-3. Remove
lock ring and stop(34), and drive assembly (35)
from armature (33). Do not disassemble drive
assembly.
(6) Remove bearing (36) by pressing from
pinion housing (28).
d.Disassembly; Style II (see figure 5-2)
(1) Remove nut (1) and lockwasher (2) from
Solenoid (5). Move lead terminal off solenoid
and swing it aside. Install nut and lockwasher
on solenoid threaded terminal for safe-keeping.
(2) Remove screws (3), spacer(s) (4) and
remove solenoid (5) from front bracket.
NOTE
Solenoid mounting screw removal may requ-
ire the use of a impact type driver.
(3) Remove nuts (6), flat washers (7) and
remove ground terminal bracket assembly (8).
NOTE
Disassembly of ground terminal bracket
assembly not required unless the terminal
threads have been damaged. Refer to the
repair parts manual for terminal components.
Change 7
5-1
