TM 9-4110-254-14
4-48. SOLENOID VALVE L2 (DEFROST LINE) TESTING AND REPAIR
This task covers
a. Testing
b. Removal
c. Installation
INITIAL SETUP
Materials/Parts
General Safety Instructions
Marker tags (2)
7, Appendix E
WARNING
Equipment Conditions
High voltage and exposed rotating parts are
used in the refrigeration unit Personal injury
Refrigeration unit shut down (para 2-7) and power
can result if power is connected
disconnected
Right side door open
Front bottom door open
a. Testing (See Figure 1-4)
(1)
Tag and disconnect tabs (1)
(2)
Using multimeter set to measure continuity, check coil (2) continuity between tabs (1) Continuity should
be indicated If no continuity was indicated, replace coil.
(3)
Using multimeter set to measure continuity, check coil (2) continuity between each tab (1) and coil (2)
metal case No continuity should be mdlcated If continuity was indicated, replace coil
(4)
If no failure was indicated check tabs (1) and tab housing (3) If damaged, repair or replace per
(5)
Using tags and wiring diagram (fig 1-4) connect tabs (1) Remove tags
NOTE
The only authorized repair to the solenoid valve is coil replacement The
coil can be replaced without opening the refrigeration pressure system
b. Removal.
WARNING
Do not attempt any disassembly of the solenoid valve other than coil
removal with a refrigerant charge m the system Refrigerant will be
sprayed out dangerously if the screws that attach the tube and plunger
assembly to the valve body are loosened.
(1)
Tag and disconnect tabs (1)
4-101
