TM 11-5820-890-30-4
4-70. REPLACEMENT OF POWER CONTROL CHASSIS O-RING GASKET.
Tools:
Cross tip screwdriver
Flat tip screwdriver
Expendable Supplies:
Sealing compound, grade H
Adhesive, cyanoacrylate
References:
Paragraph 3-24 and 3-25 for repair instructions and removal
threaded screw inserts.
Silicone compound
and installation of
Paragraph 4-62 for removal and installation of circuit breaker CB1.
ITEM
ACTION
REMARKS
REMOVAL
a. Mounting adapter
b. Side access cover
c. Terminal block
TB2 (19)
d. Screw (18)
Set on work surface with left side toward
you .
(16)
Remove and retain.
Refer to paragraph 4-62
for removal procedures.
Tag wires on terminal block TB2 (19).
See figure 4-19.
Using flat tip screwdriver, remove and
retain four screws securing wires to
terminal block TB2 (19).
Tag terminal lugs. Using cross tip screw-
driver, remove and retain screw (18), flat
e. Relay K1 (15)
f.
Four hex screws (11 )
and flat washers (12)
g. Four screws (2)
h. Two screws (1) and
flat washers (2)
i.
O-ring gasket (4)
washer, Iockwasher, and insulating washer
securing two terminal lugs to terminal
block TB2 (19).
Tag terminal lugs. Using cross tip screw-
driver, remove and retain screw (16)
securing two terminal lugs to relay K1.
Using hex wrench, remove and retain four
See figure 4-20.
screws (11) and flat washers (12) securing
power control chassis to power supply
chassis.
Using cross tip screwdriver, remove and
See figure 4-19.
retain four screws (2) securing side panel
(6) to power control chassis.
Using cross tip screwdriver, remove and
See figure 4-20.
retain two screws (1) and flat washers (2)
securing bottom shelf to power control
chassis. Remove and retain power control
chassis.
Inspect, remove, and replace as required.
See figure 4-21.
Clean case channel of all debris.
4-186
