ARMY TM 9-6115-464-34
AIR FORCE TO 35C2-3-445-2
NAVY NAVFAC P-8-624-34
CHAPTER 3
ENGINE AND GENERATOR REPAIR INSTRUCTIONS
Section I. MAINTENANCE OF ENGINE ELECTRICAL SYSTEM
3-1. GENERAL.
The engine electrical system consists of a starting circuit, a battery charging circuit, and protective and
monitoring devices. Electrical power for cranking the engine is supplied by two 12 volt, 100 amp-hour lead-acid
type batteries connected in series. A slave receptacle facilitates external connection to the batteries. The starter
assembly is a 24 volt, heavy duty unit consisting of a starting motor, a solenoid, and a drive assembly. The
battery charging alternator with integral voltage regulator and diode rectifier recharges and maintains the
batteries in a fully charged condition after starting.
3-2. BATTERIES.
Refer to the Operator and Unit Maintenance Manual for battery maintenance procedures.
3-3. SLAVE RECEPTACLE.
Refer to the Operator and Unit Maintenance Manual for slave receptacle maintenance procedures.
3-4. STARTER ASSEMBLY.
a. Removal. Refer to the Operator and Unit Maintenance Manual for starter removal procedures.
b.Disassembly.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
Remove nut (1, figure 3-1), Iockwasher (2) and terminal lead (3).
Remove screws (4) to remove solenoid assembly (5) from starter assembly.
Remove nut (6), flat washer (7), and insulating washer (8).
Remove nut (9), Iockwasher (10), nut (11), flat washer (12) and insulating washer (13).
Remove screws (14) and flat washers (15) to remove cover (16) and gasket (17) from frame
assembly (18). Discard gasket.
Remove nuts (19), Iockwashers (20), nuts (21), flat washers (22), and insulating washers (23) to
remove terminal studs (24 and 25) and contact strip (26).
Remove spring (27) and contact assembly (28).
Remove plug (29), retaining ring (30), pin (31) and boot clamp (32) to remove plunger (33).
Remove retaining ring (34) to remove spring retainer (35), spring (36), boot (37), spring retainer (38),
washer (39), and retaining ring (40) from plunger (33).
Remove bolts (41) to remove commutator end frame (42), packing (43) and spacer washer (44).
Remove plug (45) and oil wick (46).
Do not remove bushing (47) unless inspection reveals defective parts.
Remove pin (48) to remove brush spring (49) and brushholders (50).
Remove screws (51), electrical leads (52) and brushes (53) from brushholders (50).
CAUTION
Use care when removing armature to prevent damage to windings. Failure to observe
this caution could result in equipment damage.
Slide armature (54) from housing (55).
3-1
