TM 9-4110-254-14
4-36. POWER DISTRIBUTION BLOCK TB2 REPLACEMENT.
This task covers:
a. Removal
b. Installation
INITIAL SETUP
Materials/Parts
Equipment Conditions
Lock Washers (4)
Refrigeration unit shut down (para 2-7) and power
13, Appendix G
disconnected.
Self Locking Nuts (4)
Right side door open
14, Appendix G
Enclosure assembly door open
Marker Tags (9)
7, Appendix E
General Safety Instructions:
WARNING
High voltage and exposed rotating parts are
used m the refrigeration unit. Personal injury
can result If power is connected
a. Removal.
(1)
Be sure power has been disconnected at the source and tag wire leads (1).
NOTE
Terminal hardware is supplied with power distribution block.
(2)
Remove screw (2), lock washer (3), and disconnect wire leads (1)
(3)
Be sure wire leads (1) are disconnected then pull wires from strain relief bushings (4) Loosen bushings as
necessary
(4)
Remove four bolts (5), lock washers (6), flat washers (7) and enclosure (8) Discard lock washers.
(5)
Remove four self locking nuts (9), screws (10) and power distribution block (11) Discard self locking nuts.
(6)
Remove two lock nuts (12) and strain relief bushings (4)
b. Installation
(1)
Install two strain relief bushings (4), and lock nuts (12)
(2)
Install power distribution block (11), four screws (10), and new self locking nuts (9).
(3)
Install enclosure assembly (8), four flat washers (7), new lock washers (6), and bolts (5).
(4)
Push wire leads (1) through strain relief bushings (4) Tighten bushings.
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