T.O. 35C2-3-442-2
P-8-627-34
TM 5-6115-457-34
TM-07464A-35
8-43. REASSEMBLY AND INSTALLATION.
b. Repair leaks in day tank by welding.
c. Recheck day tank for leaks after
Refer to Operator and Organizational
welding (para 8-41 b.)
Maintenance Manual. Reassemble and in-
stall day tank assembly.
d. Repair minor thread damage, using
a suitable chaser.
Section VII. OVERSPEED SWITCH
d. Remove rotor assembly (9) by re-
8-44. GENERAL.
leasing retaining ring (8) which secures
rotor assembly to body assembly (11).
The overspeed switch is mounted on
Retaining ring will come out with rotor
the tachometer drive and operates at one
assembly.
half engine speed. It is a three element
switch. Switch 1, disconnects starter and
8-47. CLEANING.
initiates field flashing of generator. Switch
2, permits 24 VDC to energize precise
CAUTION
governor. Switch 3, initiates shutdown se-
quence of generator set in the event engine
Do not immerse overspeed switch
speed increases to 2400-2450 RPM. Switch
in cleaning solvent.
3 must be manually reset when tripped, by
depressing the reset button.
a. Wipe outside of overspeed switch
with a clean cloth moistened with an ap-
8 - 4 5 . REMOVAL.
proved cleaning solvent and dry thoroughly.
Refer to Operator and Organizational
WARNING
Maintenance Manual and remove overspeed
switch.
Compressed air used for cleaning and
drying purposes can create airborne
particles that may enter the eyes.
DISASSEMBLY.
8-46.
Pressure shall not exceed 30 psig.
Eye protection is required.
Refer to figure 8-12 and disassemble
overspeed switch in the order of index num-
bers assigned. Pay particular attention to
b. Low pressure compressed air may
the following:
be used to remove any dust or dirt deposits
in switch assembly.
a. Remove lockwire (1) and remove
three screws (2). Mark three hole center
8-48.
INSPECTION .
location on cap and cover assembly (6) with
a. Inspect cap and cover assembly, and
scribe marks.
body assembly for cracks and loose hard-
b. Separate cap and cover assembly (6)
ware.
from body assembly (11).
b. Inspect rotor assembly (9) bearing
for freedom of rotation. Replace rotor
c. Remove cap and cover retaining
assembly if bearing is frozen.
screws (12) and lift cover from cover as-
sembly (6).
8-26
Change 8
