10-S21
M108S, WSM
CABIN
(4) Checking Charge Refrigerant Amount
After charging the refrigerant, check for amount of charging
refrigerant as follows.
NOTE
■
• 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
1.28 to 1.66 MPa (13.0 to 17.0 kgf/cm
2
, 185 to 241 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 1.28 to 1.66 MPa (13.0 to 17.0
kgf/cm
2
, 185 to 241 psi), air bubbles which pass through the sight
glass (7) becomes as stated below depending on refrigerant
charged amount.
■
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.
■
Properly refrigerant charge
Air bubbles pass through the sight glass continuously when
pressure on the LO pressure side is within 59 to 98 kPa (0.60 to 1.0
kgf/cm
2
, 8.6 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 (0.60 to 1.0 kgf/cm
2
, 8.6 to 14 psi).
■
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
60 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 (Close)
(6) LO Pressure Side Valve (Close)
(7) Sight Glass
KiSC issued 06, 2007 A
Summary of Contents for M108S
Page 1: ...M108S WORKSHOP MANUAL TRACTOR KiSC issued 06 2007 A...
Page 8: ...6 M108S WSM SAFETY INSTRUCTIONS KiSC issued 06 2007 A...
Page 9: ...7 M108S WSM SAFETY INSTRUCTIONS KiSC issued 06 2007 A...
Page 10: ...8 M108S WSM SAFETY INSTRUCTIONS KiSC issued 06 2007 A...
Page 11: ...9 M108S WSM SAFETY INSTRUCTIONS KiSC issued 06 2007 A...
Page 15: ...13 M108S WSM DIMENSIONS DIMENSIONS KiSC issued 06 2007 A...
Page 16: ...G GENERAL KiSC issued 06 2007 A...
Page 94: ...1 ENGINE KiSC issued 06 2007 A...
Page 189: ...2 CLUTCH KiSC issued 06 2007 A...
Page 218: ...3 TRANSMISSION KiSC issued 06 2007 A...
Page 295: ...4 REAR AXLE KiSC issued 06 2007 A...
Page 296: ...CONTENTS MECHANISM 1 STRUCTURE 4 M1 KiSC issued 06 2007 A...
Page 308: ...5 BRAKES KiSC issued 06 2007 A...
Page 333: ...6 FRONT AXLE KiSC issued 06 2007 A...
Page 334: ...CONTENTS MECHANISM 1 STRUCTURE 6 M1 1 4 WHEEL DRIVE TYPE 6 M1 KiSC issued 06 2007 A...
Page 359: ...7 STEERING KiSC issued 06 2007 A...
Page 360: ...CONTENTS MECHANISM 1 STRUCTURE 7 M1 1 STEERING MECHANISM 7 M1 KiSC issued 06 2007 A...
Page 376: ...8 HYDRAULIC SYSTEM KiSC issued 06 2007 A...
Page 406: ...9 ELECTRICAL SYSTEM KiSC issued 06 2007 A...
Page 463: ...10 CABIN KiSC issued 06 2007 A...