TM 9-4120-407-14
3-32. RELAYS K1 AND K2 WITH DIODES CR2, CR3, AND SURGE ARRESTOR SA1 TESTING AND
REPLACEMENT. (Cont)
c. Installation.
(1) Relay (K1) Installation.
(a) Install relay (5) Figure 3-48, four screws (6), new lock washers (7), and flat washers (8).
(b) Connect wire leads and diode (4) to relay (5) terminals per tags and wiring diagram Figure 3-5.
Terminal lead nearest band on diode body must be connected to relay terminal Xl. Remove
tags.
(c) Install two terminal covers (3), four screws (1), and flat washers (2).
(2) Relay (K2) and Surge Arrestor (SA1) Installation.
(a) Install relay (1) Figure 3-49, four screws (7), new lock washers (8), and flat washers (9).
(b) Connect wire leads, diode (5), and surge arrestor (6) to relay (1) terminals per tags and wiring
diagram Figure 3-5. Terminal lead nearest band on diode body must be connected to relay
terminal X1. Remove tags.
(c) Install two terminal covers (4), four screws (2), and flat washers (3).
(d) Assemble and install electrical components bracket. See paragraph 3-28.
3-33. TERMINAL BOARDS REPLACEMENT.
This task covers:
b. Installation
a. Removal
INITIAL SETUP
Tools
Equipment Conditions:
Service Refrigeration Unit Tool Kit
Electrical components bracket removed and
disassembled as necessary to access terminal
Materials/Parts
a . Removal. The following procedures apply to both terminal boards and should be performed on each
one separately.
(1) Remove two screws (1), lock washers (2), flat washers (3), cover (4), and two posts (5). Discard
lock washers.
(2) Tag and disconnect capacitors (6) leads and wire leads from terminal board (7) terminals.
(3) Remove two screws (8), lock washers (9), flat washers (10), terminal board (7), and marker strip
(11). Discard lock washers.
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