SR 4 GENERATOR DISASSEMBLY AND ASSEMBLY
GENERATOR BEARING
(OUTSIDE BEARING TYPE RFA)
INSTALL GENERATOR BEARING
7551-12
NOTE: If the armature of the exciter
has
been
removed,
press
the
replacement armature on the rotor
shaft using a pipe with approximately
an I.D. and O.D. of the rotor shaft
O.D.
and
armature
winding
I.D.
respectively. The rotor shaft has a
taper and keyway.
1.
Heat the bearing in oven to a maximum
temperature of 225 F (107 C).
2.
Install bearing (1) on the shaft.
3.
Install the ring that holds the bearing on the
shaft.
4.
Install two guide bolts with 1/2"-13 NC threads,
10 in. (250 mm) long, in the generator. Install
the cover assembly on the two guide bolts.
Slide the cover into position over the bearing.
NOTICE
Do not damage the exciter fields and
armature when cover is installed.
5.
Install the bolts that hold the cover on the
generator.
6.
Install retainer's (2) and bolts that hold the
bearing in the cover.
7.
Connect the two field wires F1 and F2 to the
regulator assembly terminal strip.
8.
Remove the cardboard or sheet metal that was
used to keep the rotor off of the stator.
9.
Fill the bearing chamber with lubricant. See
Lubrication and Maintenance Guide.
10.
Install the louvers in the end of the generator
frame. Install the panel in the frame.
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