III-86
1. Purging Air From Gauge Set Hoses
Environmental regulations require that all service hoses have a shutoff valve
within 12 inches of the service end. These valves are required to ensure only a
minimal amount of refrigerant is lost to the atmosphere. R-12 gauge set hoses
have a valve near the end of all three hoses. R-134a gauge sets have a combina-
tion quick disconnect and shutoff valve on the high and low sides. The utility
(center) hose also requires a valve.
The initial purging is best accomplished when connected to recovery or re-
cycle equipment. Figure 8-3 illustrates the gauge set connections for purging and
refrigeration recovery.
Note:
The manifold gauges read system pressure when the hand valves
are closed if the hose end valves, and the stem type service valves
(if included) are open.
2. Adding Refrigerant to the System
Now that the gauges are connected, you may need to add some refrigerant to the
AC system before you can do an effective performance inspection. However, if
leaks are obvious they should be repaired prior to adding refrigerant.
Note:
Loss of some refrigerant is not unusual over an extended period
of time. Adding refrigerant is a typical procedure when the AC
system is maintained on a regular basis.
When adding refrigerant to the system, connect the center hose from the mani-
fold gauge set to the refrigerant dispensing valve on the container. Figure 8-4
illustrates this connection.
Manifold Gauge Set Installation
Figure 8-3
The purging setup for
manifold gauge set and
compressor service valves
are shown here.
Содержание TL150
Страница 1: ...TL150 Track Loader BOOK No CT7E901 WORKSHOP MANUAL Serial No 21500004...
Страница 4: ...0 4...
Страница 5: ...I 1 I GENERAL...
Страница 18: ...I 14 GENERAL...
Страница 19: ...II 1 II SPECIFICATIONS...
Страница 44: ...III 1 III MACHINE CONFIGURATION...
Страница 94: ...III 51 MACHINE CONFIGURATION ELECTRICAL SYSTEM ELECTRICAL SYSTEM ELECTRICAL WIRING DIAGRAM...
Страница 122: ...III 79...
Страница 146: ...MACHINE CONFIGURATION III 103...
Страница 147: ...IV 1 IV HYDRAULIC UNITS...
Страница 152: ...IV 6 HYDRAULIC UNITS HST PUMP 1 Plug 2 Plug 3 Plug 4 Screw 5 Seal Nut 6 Plug Pump Assembly 4 4...
Страница 189: ...IV 43 HYDRAULIC UNITS GEAR PUMP INSPECTION AND ADJUSTMENT IV 36 38 TROUBLESHOOTING IV 39...
Страница 230: ...IV 84 HYDRAULIC UNITS PILOT VALVE INSPECTION AND ADJUSTMENT IV 79 TROUBLESHOOTING IV 80...
Страница 254: ...IV 108 HYDRAULIC UNITS CYLINDERS Corrective Jig E MATERIAL STKM13C Unit mm Corrective Jig E A B Arm 90 75 Bucket 90 75...
Страница 261: ...IV 115 HYDRAULIC UNITS TRAVEL MOTOR DISASSEMBLY AND ASSEMBLY Special tools...
Страница 263: ...IV 117 HYDRAULIC UNITS TRAVEL MOTOR...
Страница 282: ...IV 136 HYDRAULIC UNITS TRAVEL MOTOR...
Страница 283: ...V 1 V TROUBLESHOOTING...