221
OPTIONS
Air Conditioner
CAUTION
The high pressure pipe becomes hot (80
to 120°C (176 to 248°F)), so be careful not
to burn yourself when inspecting the
refrigerant level.
4. Open the engine hood.
5. Tilt up the cab.
Refer to page 154 “Tilting Up the Platform”.
6. Also check the temperature of the
compressor’s high pressure pipe (1) and
low pressure pipe (2). Refer to page 222
“Condition of the refrigerant.”
Off-Season Inspection
Even off season, run the cooler for 3 to 5
minutes at least once a week to maintain oil
in the various parts of the compressor.
Inspecting the Refrigerant (gas)
Level
WARNING
Exposure of the eyes or hands to the
cooler’s refrigerant could result in
blindness or frostbite. Never touch the
refrigerant or loosen the parts of the
cooling circuit.
Should the refrigerant gas leak, keep
flames away.
The cooling capacity will decrease if the
amount of refrigerant is insufficient.
Inspect the refrigerant level using the sight
glass (2) on the top of the receiver drier (1).
1. Open the rear cover.
2. Inspect under the following conditions:
• Cab door ........... Fully open
• Temperature control dial
......................... Fully to the COOL side
• Air strength ....... High
• Engine speed .... 1500 rpm
• Air conditioner ... On
3. Inspect by watching the flow of air bubbles
in the refrigerant through the sight glass
(2). Refer to page 222 “Condition of the
refrigerant”.
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