TM 1-1520-238-23
9-75
9.20.
DC BUS ISOLATION DIODE REMOVAL/INSTALLATION – continued
NOTE
The following step is typical for bus isola-
tion diodes CR1, CR2, CR3, and CR4.
c. Install diode (1) on conductor (2). Torque nut
(3) to 92 INCH-POUNDS.
(1) Apply a thin coat of silicone compound to
diode mounting surface. Use silicone
compound (item 185, App F).
(2) Position diode (1) on conductor (2).
(3) Install flat washer (5), lockwasher (4), and nut
(3).
(4) Torque nut (3) to 92 INCH-POUNDS. Use
crowfoot and torque wrench.
(5) Wait 20 to 30 MINUTES.
(6) Retorque nut (3) to 92 INCH-POUNDS. Use
crowfoot and torque wrench.
d. Perform
electrical
bond
check
(TM 55-1500-323-24).
(1) Bond shall be 0.0025 OHM or less. Use
ohmmeter.
e. Inspect (QA).
f. Install electrical power distribution box cover
(para 9.9).
g. Perform DC power generation maintenance
operational check (TM 1-1520-238-T).
END OF TASK
2
M04-1417-7
3
4
1
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