MAINTENANCE OF THE GENERATOR
The generator housing is directly coupled to the
Military Standard engine. The generator is a direct
drive alternator type, single phase, fully inclosed
with fan type cooling and sealed bearings.
10-2. On-Equipment Testing
On-Equipment electrical test procedures may
provide a basis for determining the necessity and
extent of generator repair. Take into consideration
the test instrument used, test lead resistance, and
the ambient temperature at the time of the test. If
more precise measurements are required, use an in-
strument such as a Kelvin Balance or a Wheatstone
Bridge and make comparative measurements be-
tween the suspected component and a like item that
is known to be good.
Clean all parts in a well-ventilated
area. Avoid inhalation of solvent
fumes and prolonged exposure of skin
to cleaning solvent. Wash exposed
skin thoroughly. Dry cleaning solvent
(Fed. Spec. P-D-680) used to clean
parts is potentially dangerous to per-
sonnel and property. Do not use near
open flame or excessive heat. Flash
point of solvent is 100° to 138OF. (38° to
a. Removal and Diasassembly.
(1) Remove engine-generator from carrying
frame (para. 8-2).
(2) Remove control panel assembly (para. 9-2).
(3) Disconnect fuel line from fuel pump (fig.
(4) Remove screws securing control panel
bracket to generator housing and remove bracket
from generator (fig. 6-3).
(5) Remove screws and washers securing the
upper and lower fuel tank brackets to the generator
housing and remove brackets.
(6) Remove screws (1, fig. 6-4) from end cap
(2) and remove end cap.
(7) Remove motor drive machine bolt (3).
(8) Remove nuts (4), bolts (5), and washers (6)
securing the generator housing and stator (7) to the
engine end bell and remove housing and stator.
(9) Remove bearing (8) from end of engine
(10) Insert special tool (table 5-1) into out-
board end of rotor and thread in until rotor assem-
bly becomes free of shaft and remove rotor (9).
(11) Remove fan (10) from rotor.
(12) Remove bolts (11) securing engine end
bell (12) to engine housing and remove end bell.
(1) Clean the adapter, fan, and outside surface
of the generator housing with a cloth dampened in
cleaning solvent, Fed. Spec. P-D-680, and dry thor-
(2) Clean stator and rotor using dry low pres-
sure compressed air.
c. Inspection and Repair.
(1) Inspect bearing for a binding or sticking
condition and for excessive wear. Replace defective
(2) Inspect adapter and fan for cracks or
breaks. Replace defective adapter or fan.
(3) Inspect rotor and stator for damaged coils,
faulty insulation and for evidence of overheating.
Replace defective rotor or stator.
d. Assembly and Installation.
(1) Install engine end bell (12, fig. 6-4) to the
engine housing with bolts (11).
(2) Thread fan (10) onto rotor (9) and install
fan and rotor on engine shaft.
(3) Install bearing (8) on engine shaft.
(4) Position housing and stator (7) in place on
end bell and secure with washers (6), screws (5), and
(5) Install motor drive machine bolt (3).
(6) Install end cap (2) to generator housing
with screws (1).
(7) Install control panel mounting on the gen-
(8) Install the upper and lower fuel tank
brackets to the generator housing.
(9) Attach fuel line (fig. 4-30).
(10) Install control panel assembly (para. 9-2).
(11) Install engine-generator in carrying