10-S21
M8540, M9540, WSM
CABIN
(4) Checking Charge Refrigerant Amount
After charging the refrigerant, check for amount of charging
refrigerant as follows.
NOTE
Q
• The pressure on the following checking is the gauge
indications at ambient temperature 30 °C (86 °F), so it should
be noted that the pressure will differ some what with the
ambient temperature.
1. Disconnect the
1P
connector (3) of magnetic clutch.
2. Start the engine and set a approx.
1500 min
-1
(rpm)
.
3. Connect the
1P
connector (3) of magnetic clutch to battery
directly, and then set the blower switch to
HI
position.
4. Leave the system for approx.
5 minutes
until the refrigerant cycle
becomes stable, keeping pressure on the
HI
pressure side from
1.27 to 1.66 MPa (13 to 17 kgf/cm
2
, 185 to 242 psi).
5. When the refrigerant cycle is stabilizer, turn off the blower switch
and let the compressor alone to run. Then pressure on the
LO
pressure side gradually drops. At this time, if pressure on the
HI
pressure side is maintained from 1.27 to 1.66 MPa (13 to 17 kgf/
cm
2
, 185 to 242 psi), air bubbles which pass through the sight
glass (7) becomes as stated below depending on refrigerant
charged amount.
Q
Insufficient refrigerant charge
Air bubbles pass continuously the sight glass when pressure on
the
LO
pressure side is over 99.0 kPa (1.01 kgf/cm
2
, 14.4 psi). In
this case, charge the refrigerant from the
LO
pressure side.
Q
Properly refrigerant charge
Air bubbles pass through the sight glass continuously when
pressure on the
LO
pressure side is within 59 to 98 kPa (0.6 to 1.0
kgf/cm
2
, 9 to 14 psi).
If the charge refrigerant amount is proper, no air bubble is
observed on the sight glass at pressure on the
LO
pressure side
over 99.0 kPa (1.01 kgf/cm
2
, 14.4 psi) when the blower switch is
turned on. When the blower switch is turned off, bubbles pass
through the sight glass in case pressure on the
LO
pressure side is
within 59 to 98 kPa (0.6 to 1.0 kgf/cm
2
, 9 to 14 psi).
Q
Excessive refrigerant charge
Air bubbles pass through the sight glass time to time or no air
bubble is observed when pressure on the
LO
pressure side is under
59 kPa (0.6 kgf/cm
2
, 9 psi).
In this case, discharge excessive refrigerant gradually from the
LO
pressure side.
W1019604
(1)
LO
Pressure Gauge
(2)
HI
Pressure Gauge
(3)
1P
Connector
(4) To Battery
(5)
HI
Pressure Side Valve
(6)
LO
Pressure Side Valve
(7) Sight Glass
KiSC issued 09, 2008 A
Summary of Contents for M9540
Page 1: ...M8540 M9540 WORKSHOP MANUAL TRACTOR KiSC issued 09 2008 A...
Page 8: ...6 M8540 M9540 WSM SAFETY INSTRUCTIONS KiSC issued 09 2008 A...
Page 9: ...7 M8540 M9540 WSM SAFETY INSTRUCTIONS KiSC issued 09 2008 A...
Page 10: ...8 M8540 M9540 WSM SAFETY INSTRUCTIONS Q CABIN Model KiSC issued 09 2008 A...
Page 11: ...9 M8540 M9540 WSM SAFETY INSTRUCTIONS KiSC issued 09 2008 A...
Page 12: ...10 M8540 M9540 WSM SAFETY INSTRUCTIONS KiSC issued 09 2008 A...
Page 16: ...14 M8540 M9540 WSM DIMENSIONS DIMENSIONS ROPS Model KiSC issued 09 2008 A...
Page 17: ...15 M8540 M9540 WSM DIMENSIONS CABIN Model KiSC issued 09 2008 A...
Page 18: ...G GENERAL KiSC issued 09 2008 A...
Page 103: ...1 ENGINE KiSC issued 09 2008 A...
Page 203: ...2 CLUTCH KiSC issued 09 2008 A...
Page 219: ...3 TRANSMISSION KiSC issued 09 2008 A...
Page 322: ...4 REAR AXLE KiSC issued 09 2008 A...
Page 323: ...CONTENTS MECHANISM 1 FEATURES 4 M1 KiSC issued 09 2008 A...
Page 336: ...5 BRAKES KiSC issued 09 2008 A...
Page 374: ...6 FRONT AXLE KiSC issued 09 2008 A...
Page 401: ...7 STEERING KiSC issued 09 2008 A...
Page 402: ...CONTENTS MECHANISM 1 STEERING MECHANISM 7 M1 2 STEERING CYLINDER 7 M2 KiSC issued 09 2008 A...
Page 420: ...8 HYDRAULIC SYSTEM KiSC issued 09 2008 A...
Page 473: ...9 ELECTRICAL SYSTEM KiSC issued 09 2008 A...
Page 554: ...10 CABIN KiSC issued 09 2008 A...