TM 55-2210-223-34
TO 45A2-2-14-22
3-36. MAIN GENERATOR (cont)
CLEANING, INSPECTION, AND REPAIR (cont)
CAUTION
Do not paint gasket surfaces.
e.
Paint the following with gray gloss enamel:
(1)
Coupler assembly
(2)
Inside surface of pulley
(3)
Outside surface of main generator covers
(4)
Outside surface of stator frame cover
59.
Refer to table 3-3 for main generator data.
Table 3-3. Main Generator
ITEM
SPECIFICATION
Safe speed
1325 rpm maximum
Voltage
600 dc
Armature amperes
2600 amps
Main field amperes
100 amps
Number of brush arms
8
Brushes per arm
4
Brush size
1 x 1-1/2 x 2-3/4 inches (25.4 x 38.1 x
69.9 mm)
Brush pressure
7 to 8 pounds (3.2 to 3.6 kg)
Brush-to-holder thickness clearance
0.004 to 0.010 inch (0.10 to 0.25 mm)
Brush-to-holder width clearance
1/16 inch (1.5875 mm) maximum
TEST
60.
Perform the armature and stator megohmmeter test by the following:
NOTE
A minimum of 500 V at 1 megohm is required for this test.
a.
Place lead (1) of megohmmeter (2) on shaft or core of armature (43).
b.
Place lead (3) of megohmmeter (2) on one of the commutator bars. Note reading on megohmmeter. Contact
each successive bar around the commutator.
3-145