ARMY TM 9-6115-673-13&P
AIR FORCE TO 35C2-3-512-1
(9)
While supporting rotor (21), tap on rotor yoke casting using a brass drift and hammer. Tap with yoke
parallel to work surface until rotor (21), with fan (23) attached, separates from engine shaft.
(10) Remove capscrew (19) from engine shaft.
(11) Remove bolts (24), lockwashers (25), washers (26), and adapter plate (27) from engine.
c. Inspection.
(1)
Inspect all components for cracks, corrosion, stripped threads, and other damage.
(2)
Inspect fan for damaged vanes.
(3)
Inspect bearing bracket o-ring. If o-ring is damaged or missing, replace bearing bracket.
CAUTION
If there is any unusual wear to bearing (29, Figure 5-39), or if bearing bracket
(16) does not meet minimum dimension stated in step 4, the bearing bracket
must be replaced.
(4)
Measure diameter of shaft on bearing bracket [minimum of 0.7868 in. (20.2 mm)].
(5)
Inspect rotor windings for damage and slip rings for grooves and pitting.
(6)
Inspect stator windings for damage and signs of overheating (discolored or burned windings).
(7)
Replace damaged or worn parts.
d. Testing.
(1)
Rotor:
(a)
Using a multimeter, measure resistance across the windings. Resistance should be 13-14
ohms. Replace rotor if resistance is not as stated.
(b)
Using a multimeter, check for continuity from each slip ring to ground. If continuity is indicated,
rotor is defective and must be replaced.
e. Disassembly.
(1)
Inspect alternator brushes, refer to paragraph 4.12.4.b.
(2)
Remove bolts (22, Figure 5-39), washers (34), and fan (23) from rotor (21).
(3)
Remove thru bolts (28) from adapter plate (27).
(4)
If necessary, using suitable puller, remove bearing (29) from rotor (21).
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