Generac Power Systems TXP User Manual
Page 57
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INSPECTION
1. Brush Holder & Brushes - The Brush Holder was removed along with
the Control Panel, and left attached to Control Panel wiring. Inspect
Brush Holder for obvious damage, cracks, etc. Replace, if damaged. In
spect brushes carefully. Replace if cracked, damaged or less than 5/16
inch long.
2* Rotor Bearing - Check bearing for freedom of rotation. Bearing must
spin freely on shaft. If bearing must, be replaced, use a bearing pull
er to remove, then press a new bearing over shaft.
3. Slip Rings - Inspect Slip Rings. If dirty, dull or tarnished, clean
until shiney with fine sandpaper..DO NOT USE EMERY CLOTH.
4. Rotor Windings ■ ? Inspect entire rotor for obvious damage. Set, VOM
to "+DC" and to "Rxl” scale, then zero the meter. Hold the Positive
(+) meter test probe into contact with slip ring ring nearest the rotor
bearing. Hold the second test probe against the other slip ring. Meter
needle should swing upscale and indicate approximately 13 Ohms. If the
meter does not swing upscale, rotor,windings are "open”. An INSULATION
BREAKDOWN TESTER.may be used to test the rotor windings. BE SURE TO
FOLLOW THE TESTER MANUFACTURER'S INSTRUCTIONS. DO NOT CONNECT TESTER
PROBES ACROSS THE SLIP RINGS. DO NOT EXCEED TESTER SETTING OF 500 VOLTS.
FLEXIBLE COUPLING
1. The Flexible Coupling is ret
ained to the Rotor with 3 bolts
and
flatwashers.
If
necessary
to
remove
the
Flexible
Coupling,
re
move the 3 bolts and washers. (LOC-
TITE was applied to threads of the
bolts during assembly.)
L
INSPECTION'
The Flexible Coupling should be rejected if bent, cut, gouged, or other
wise damaged. Any scratch, other than a surface scratch, should be cause
for
rejection.
The
coupling,
must
be
perfectly
flat.
Especially
note
the
condition of coupling mounting holes. Any damage caused by improper in
stallation
of
washers
is
cause
for
rejection.
Any
wear
or
out-of-round-
ness of mounting holes is .also cause for rejection. FOLLOW INSTRUCTIONS
IN THIS MANUAL CAREFULLY FOR INSTALLATION OF'THE FLEXIBLE COUPLING.
6.4
Issued 3-78