TM 9-4120-407-14
3-32. RELAYS K1 AND K2 WITH DIODES CR2, CR3, AND SURGE ARRESTOR SA1 TESTING AND
REPLACEMENT.
a. Removal
This task covers:
b. Testing
c. Installation
INITIAL SETUP
Tools
Materials/Parts
Service Refrigeration Unit Tool Kit
a . Removal.
(1) Relay (K1) and Diode (CR2) Removal.
(b) Remove four screws (1) Figure 3-48, flat washers (2), and two terminal covers (3).
Figure 3-48. Relay (K1) and Diode (CR2)
(c) Tag and disconnect wire leads and diode (4) from relay (5) terminals.
(d) Remove four screws (6), lock washers (7), flat washers (8), and relay (5). Discard lock
washers.
(2) Relay (K2). Diode (CR3). and Surge Arrestor (SA1) Removal.
(a) Remove electrical components bracket and disassemble as necessary to access relay (1)
(b) Remove four screws (2), flat washers (3), and two terminal covers (4).
(c) Tag and disconnect wire leads, diode (5), and surge arrestor (6) from relay (1) terminals.
(d) Remove four screws (7), lock washers (8), flat washers (9), and relay (1). Discard lock
washers.
3-116