TM 9-4120-408-14
CHAPTER 4
UNIT MAINTENANCE INSTRUCTIONS
INDEX
PAGE
Lubrication Instructions ....................................................................
Repair Parts; Special Tools; Test, Measurement, and Diagnostic
Equipment (TMDE); and Support Equipment ...................................
Common Tools and Equipment ....................................................................
Special Tools, TMDE, and Support Equipment .............................................
Repair Parts ..................................................................................................
Service Upon Receipt ......................................................................
Unpacking .....................................................................................................
Checking Unpacked Equipment ....................................................................
Processing Unpacked Equipment .................................................................
Installation .....................................................................................................
Unit Preventive Maintenance Checks And Services (PMCS) ...........
General .........................................................................................................
Unit Troubleshooting Procedures .....................................................
Unit Troubleshooting .....................................................................................
Unit Maintenance Procedures ...........................................................
Access Panel Maintenance ...........................................................................
Condenser Side Panel Maintenance .............................................................
Data Plate and Spring Clip Replacement ......................................................
Roadside Lifting Ring Replacement ..............................................................
Condenser Foot Replacement ......................................................................
Upper Condenser Protective Grille and EMI/RFI Ventilation
Panel Maintenance ...........................................................................
Condenser Wiring Harness Maintenance ......................................................
Condenser Electrical Lead and Diode Assemblies Maintenance ...................
50 Amp Relay Maintenance ..........................................................................
Condenser Terminal Board Maintenance ......................................................
Control Module Top Panel Maintenance .......................................................
Mode Selector Switch (S1) Maintenance ......................................................
Light Emitting Diode (LED) Assembly Maintenance ......................................
Thermostat Maintenance ..............................................................................
Control Module Wiring Harness Maintenance ...............................................
Control Module Electrical Lead, Diode, and Resistor
Assemblies Maintenance .................................................................
Control Module Bus Connector and Single Row Terminal
Board Maintenance ...........................................................................
Control Module Housing Maintenance ..........................................................
4-28
Return Air Filter Mounting Bracket Replacement ..........................................
Front (Air Inlet) Evaporator EMI/RFI Ventilation Panel
Maintenance ....................................................................................
Differential Pressure Switch Test ...................................................................
Section VII. Preparation for Storage or
Shipment ............................................................
Special Instructions for Administrative Storage .............................................
4-1