wsm M8540NARROW - Page 61

GENERAL
M8540Narrow, M9540Narrow, WSM
NG-39
Draining Clutch Housing Water
1. The tractor is equipped with drain plug (1) under the clutch
housing.
2. After operating in rain, snow or tractor has been washed, water
may get into the clutch housing.
3. Remove the drain plug (1) and drain the water, then install the
plug (1) again.
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Checking Refrigerant (Gas) (CABIN Model)
CAUTION
• Liquid contact with eyes or skin may cause frostbite.
• In the event of a leakage, wear safety goggles. Escaping
refrigerant can cause severe injuries to eyes.
• In contact with a flame, R134a refrigerant gives a toxic gas.
• Do not disconnect any part of the refrigeration circuit of the
air conditioning system.
A shortage of refrigerant impairs the air-conditioner
performance. Check the following points. If it is indicated that the
amount of refrigerant is extremely low, inspect and charge. (Refer
to "10. CABIN" service section.)
Q Checking Procedure
1. Run the air-conditioner in the following conditions.
• Engine speed: About 1500 min
−1
(rpm)
• Temperature control lever:
Maximum cooling position (leftmost)
• Fan switch: Highest blow (HI)
• Air-conditioner switch: ON
2. Look into the sight glass (1) to see if the refrigerant is flowing
through its circuit.
IMPORTANT
• Charge only with R134a not R12 refrigerant (gas).
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(1) Drain Plug (Water) [A] ROPS Model
[B] CABIN Model
(1) Sight Glass (A) Proper: Little or no air bubbles in
the refrigerant flow.
(B) Low: Lots of air bubbles in the
refrigerant flow (air bubbles or
foam passing continuously).
(C) Overfull or no refrigerant:
Colorless and transparent.
KiSC issued 07, 2013 A