Kubota M5040, Workshop Manual

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10-S19
M5040, M6040, M7040, WSM CABIN
(3) Charging the Refrigerant
Charging an Empty System (Liquid)
This procedure is for charging an empty system through the HI
pressure side with the refrigerant in the liquid state.
CAUTION
• Never run the engine when charging the system through the
HI pressure side.
• Do not open the LO pressure valve when refrigerant R134a
is being charged in the liquid state (refrigerant container is
placed upside-down).
IMPORTANT
Q
• After charging the refrigerant in the liquid state with approx.
500 g (1.1 lbs) through the HI pressure side, be sure to
recharge the refrigerant in the vapor state to specified
amount through the LO pressure side.
1. Close the HI and LO pressure side valves (1) and (2) of manifold
gauge after the system is evacuated completely.
2. Connect the center charging hose (green) (5) to the can tap valve
(7) fitting, and then loosen the center charging hose (green) (5)
at the center fitting of manifold gauge until hiss can be heard.
Allow the air to escape for few seconds and tighten the nut.
3. Open the HI pressure side valve (2) fully, and keep the container
upside-down to charge the refrigerant in the liquid state from the
HI pressure side.
4. Charge the refrigerant in the liquid state with approx. 500 g (1.1
lbs) from the HI pressure side.
NOTE
Q
• If LO pressure gauge does not show a reading, the system
is clogged and must be repaired.
5. Close the HI pressure side valve (2) of manifold gauge and can
tap valve of refrigerant container.
W1018931
(1) LO Pressure Side Valve
(2) HI Pressure Side Valve
(3) Charging Hose (Red)
(4) Charging Hose (Blue)
(5) Charging Hose (Green)
(6) Refrigerant Container (R134a)
(7) Can Tap Valve
(A) Refrigerant Container “Upside”
(B) Refrigerant Container “Down
Side”
KiSC issued 06, 2008 A