12 - 11
System Diagnosis (cont'd)
No Refrigerant Circulation
Gauge Readings:
Low Side Gauge -
Zero to negative.
High Side Gauge -
Low.
Other symptoms:
Receiver-Drier -
Frost or moisture on tubes before
and after receiver-drier.
Diagnosis:
Refrigerant flow obstructed by dirt, moisture or
gas leakage from expansion valve heat sensing
tube.
Correction:
1.
Evacuate A/C system.
2.
Check heat sensing tube at expansion valve.
Replace expansion valve if necessary.
3.
Remove expansion valve and attempt removal of
dirt. If dirt cannot be removed, replace expansion
valve.
4.
Replace receiver-drier.
5.
Charge system with R-134a.
6.
Operate system and check performance.
Insufficient Cooling of Condenser or Refrigerant
Overcharge
Gauge Readings:
Low Side Gauge -
High.
High Side Gauge -
High.
Other symptoms:
Sight Glass -
No bubbles visible even at lower engine
RPM.
Diagnosis:
Refrigerant overcharge, condenser cooling fins
clogged with dirt or cooling fans malfunctioning.
Correction:
1.
Clean condenser cooling fins.
2.
Check cooling fan operation.
3.
Evacuate A/C system.
4.
Charge system with R-134a.
5.
Operate system and check performance.
LOW SIDE (RED)
HIGH SIDE (BLUE)
Zero to negative
Low
Section B
Body & Framework
9803/6400
Section B
12 - 11
Issue 1
Air Conditioning
LOW SIDE (RED)
HIGH SIDE (BLUE)
High
High
LOW SIDE - -1.0 bar (-1.1 kgf/cm
2
)(-15 lbf/in
2
)
HIGH SIDE - 5.4 bar (5.5 kgf/cm
2
)(78 lbf/in
2
)
LOW SIDE - 3.0 bar (3.0 kgf/cm
2
)(43 lbf/in
2
)
HIGH SIDE - 22.1 bar (22.5 kgf/cm
2
)(320 lbf/in
2
)
50
40
30
30
0
10
20
60
70 80
90
100
110
120
350
150
100
500
0
50
200 250
300
350
400
450
50
40
30
30
0
10
20
60
70 80
90
100
110
120
350
150
100
500
0
50
200 250
300
350
400
450
Summary of Contents for JS 200 Series
Page 57: ...9 1 Section 3 Routine Maintenance 9803 6400 Section 3 9 1 Issue 2 Component Location Diagram...
Page 113: ......
Page 137: ...5 3 Section C Electrics 9803 6400 Section C 5 3 Issue 2 Pump Control FLOW CHART...
Page 201: ...10 7 Section C Electrics 9803 6400 Section C 10 7 Issue 1 CAPs II Diagnostic system K C...
Page 215: ...Section E Section E Hydraulics 9803 6400 Issue 2 3 2 3 2 Schematics...
Page 217: ...Section E Section E 9803 6400 Issue 2 3 3 3 3 Hydraulics Schematics...
Page 218: ...3 5 Section E Hydraulics 9803 6400 Section E 3 5 Issue 1 Schematics Shuttle Block JS200 JS240...
Page 232: ...10 1 Section E Hydraulics 9803 6400 Section E 10 1 Issue 1 Hydraulic Pump JS200 JS240...
Page 233: ...10 2 Section E Hydraulics 9803 6400 Section E 10 2 Issue 1 Hydraulic Pump JS200 JS240...
Page 234: ...10 3 Section E Hydraulics 9803 6400 Section E 10 3 Issue 1 Hydraulic Pump JS200 JS240...
Page 263: ...30 2 Section E Hydraulics 9803 6400 Section E 30 2 Issue 1 Control Valve JS200 JS240...
Page 264: ...30 3 Section E Hydraulics 9803 6400 Section E 30 3 Issue 1 Control Valve JS200 JS240...
Page 265: ...30 4 Section E Hydraulics 9803 6400 Section E 30 4 Issue 1 Control Valve JS200 JS240...
Page 266: ...30 5 Section E Hydraulics 9803 6400 Section E 30 5 Issue 1 Control Valve JS200 JS240...
Page 267: ...30 6 Section E Hydraulics 9803 6400 Section E 30 6 Issue 1 Control Valve JS200 JS240...
Page 268: ...30 7 Section E Hydraulics 9803 6400 Section E 30 7 Issue 1 Control Valve JS200 JS240...
Page 327: ...51 12 Section E Hydraulics 9803 6400 Section E 51 12 Issue 1 Solenoid Valve 8 spool...
Page 328: ...55 1 Schematic Section E Hydraulics 9803 6400 Section E 55 1 Issue 1 Shuttle Valve...
Page 330: ...55 3 Schematic Section E Hydraulics 9803 6400 Section E 55 3 Issue 1 Cushion Valves...
Page 481: ...7 15 Section F Transmission 9803 6400 Section F 7 15 Issue 2 Motor...
Page 482: ...7 16 Section F Transmission 9803 6400 Section F 7 16 Issue 1 Motor...