TM 11-5820-890-30-4
CAUTION
Steps marked with must be performed exactly as written. They are critical in maintaining
the nuclear hardness of the power supply adapter. Seals must not be damaged. All screws must
be torqued to the limits specified in the replacement procedures.
13-17. REPLACEMENT OF HEAT SINK ASSEMBLY (8A1).
Tools:
Flat tip screwdriver
Torque screwdriver
ITEM
ACTION
REMARKS
REMOVAL
a.
Power supply adapter (1)
b. 18 captive screws (3)
c.
Six screws on terminal
board TB1 (4) and wires
d. Heat sink assembly (2)
e.
Sealing gasket
f.
Heat sink assembly (2)
INSTALLATION
g.
h.
i.
j.
k.
Heat sink assembly (2)
Sealing gasket
Heat sink assembly (2)
Heat sink assembly wires
and six screws on termi-
nal board TB1 (4)
Heat sink assem-
bly and 18 captive screws
(3)
Set upside down on work surface with rear
toward you. See figure 13-2.
Use flat tip screwdriver. Fully loosen, and
inspect for damage. If damaged, obtain
replacement.
Use flat tip screwdriver. Remove and inspect
six screws securing wires to TB1. Disconnect
wires. If damaged, obtain replacement.
Remove heat sink assembly from power supply
adapter and set on work surface.
Remove and check for damage. If damaged,
obtain replacement.
Turn in defective heat sink assembly to supply
for disposition.
Obtain replacement heat sink assembly.
Place on replacement heat sink assembly.
Set on work surface so that wires
can be connected to TB1 (4).
Connect to TB1 (4). Wire labeled "1"
These were removed in
connects to TB1 terminal 1. Repeat
step c.
for all six wires. Use flat tip screwdriver.
Install and tighten six retained screws
securing wires to TB1.
Use flat tip screwdriver. Hold heat sink
assembly (2) in place on power supply
adapter (1). Install and hand tighten 18
captive screws. Use torque screwdriver.
Torque screws to 8 to 10 in-lb.
13-28
