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Figure 4-19. Junction box, partially removed.
4-51. Testing
Refer to schematic wiring diagram and test
components for continuity after disconnecting
leads. Check coils of armature relays for continuity
then actuate the coil with a 24 volt dc source and
check across contacts that should be closed ac-
cording to the schematic wiring diagram. Check
circuit breaker in open and closed position.
4-52. Disassembly
a.
General. Disassembly is limited to
replacement of individual components. Tag and
disconnect leads from component to be removed.
b. Heater and Compressor Motor Relays. To
remove the heater and compressor motor relays
refer to figure 4-20 and remove relays as follows:
(1) Remove four screws (1), nuts (2), and
washers (3). Remove compressor motor relay (4).
(2) Follow same procedure to remove heater
relay (5).
c. Condenser Fan Relay. Refer to figure 4-20 and
remove relay as follows:
(1) Remove two screws (6) from side of
junction box. Remove relay and bracket from
junction box.
(2) Remove three nuts (7) and flat washers (8)
to separate bracket (9) from condenser fan relay
(10).
4-30
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