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TM 9-4120-367-14
TM 07592B-14/1
5.8 RELAYS K4 (AND K5 ON MODEL MHP-20-4-08.). This task covers removal, testing and installation.
INITIAL SETUP
Applicable Configurations:
Special Environmental Conditions:
All
None
Test Equipment:
Multimeter
Stop watch
28 Vdc power supply
Special Tools:
None
Material/Parts:
Heat-shrink Tubing
Solder
Solvent P-D-680)
Detergent
Cleaning Cloths
Equipment Descriptions:
Power OFF; installed in shelter
General Safety Instructions:
See WARNING page
References:
None
Troubleshooting References:
None
Personnel Required:
Unit Maintenance
Location/Item
Removal
NOTE
Removal and testing proccedures apply to both relays K4 and K5.
Action
a.
b.
c.
d.
e.
Disconnect power supply.
Remove screws, and carefully pull junction box
from the frame. Use care to avoid breaking the
sensing line.
Remove two screws from the side of the junction
box frame.
Remove three nuts and washers.
Tag and unsolder or cut leads at relay.
Remarks
High voltage can kill.
Sensing line connects TEM-
PERATURE SELECTOR to
sensing bulb which is behind
return air louver.
Bracket and relay can be lifted
from frame.
Relay can be lifted from brack-
ets.
5-17
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