Chapter 5: DIRECT SUPPORT MAINTENANCE INSTRUCTIONS

TM5-4120-383-14

CHAPTER 5

DIRECT SUPPORT MAINTENANCE INSTRUCTIONS

Section/Para

Repair Parts, Special Tools, TMDE, and

Support Equipment . . . . . . . . . . . . . . . . .

5-1

General . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting . . . . . . . . . . . . . . . . . .

5-2

Use of Troubleshooting Table . . . .

III

Maintenance Procedures . . . . . . . . . . . . . .

5-3

General . . . . . . . . . . . . . . . . . . . . . . . .

5-4

Fabric Cover . . . . . . . . . . . . . . . . . . . .

5-5

Top Covers . . . . . . . . . . . . . . . . . . . . . .

5-6

Screens, Guards, and Louvers . . . . . .

5-7

Information Plates . . . . . . . . . . . . . .

Evaporator Fan, Motor, and

5-8

Housing Repair . . . . . . . . . . . . . . . . .

Condenser Fan, Motor, and

5-9

Housing Repair . . . . . . . . . . . . . . . . . . . .

5-10

Refrigeration System Repairs General . . . .

5-11

Discharging the Refrigerant System

...

5-12

Purging the Refrigerant System . . . . . . . .

5-13

Brazing/Debrazing Procedures . . . . . . . .

5-14

Leak Testing . . . . . . . . . . . . . . . . . . .

5-15

Evacuating the Refrigerant System . . . . .

5-16

Charging the Refrigerant System . . . .

5-17

Refrigeration System Troubleshooting . . .

5-18

Overheating Checks . . . . . . . . . . . . . .

5-19

Refrigerant Pressure Check . . . . . . .

5-20

Evaporator Coil . . . . . . . . . . . . . . . . . . .

5-21

Expansion Valve (Primary) . . . . . . . . . . .

5-22

Expansion Valve (Quench) . . . . . . . . . . .

5-23

Solenoid Valves . . . . . . . . . . . . . . . . . .

5-24

Pressure Regulator . . . . . . . . . . . . . . . .

5-25

Actuating Cylinder . . . . . . . . . . . . . . . . .

5-26

Pressure Switches . . . . . . . . . . . . . .

5-27

Service (Charging) Valves . . . . . . . . .

5-28

Pressure Relief Valve . . . . . . . . . . . .

5-29

Condenser Coil . . . . . . . . . . . . . . . . . . . . .

5-30

Dehydrator (Filter/Drier) . . . . . . . . . . .

5-31

Liquid Indicator (Sight Glass) . . . . . . .

5-32

Compressor . . . . . . . . . . . . . . . . . . . . .

5-33

Tubing and Fittings . . . . . . . . . . . . .

5-1