5-43
MAINTENANCE
INSPECTING THE REFRIGERANT (GAS)
LEVEL (AC)
• 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.
• Keep flames away if the refrigerant gas
is leaking.
• The high-pressure pipes of the air
conditioner can be very hot (80 to 120°C
or 176 to 248°F). Be careful not to burn
yourself.
The cooling capacity decreases if the
amount of refrigerant is insufficient.
Inspect the refrigerant level using the sight
glass (2) on the top of the receiver drier (1).
EVERY 250 HOURS
1. Loosen the bolts and remove the cover
(3).
2. Inspect the places for the conditions
below.
Places for
inspection
Conditions
Cab door Fully open
Temperature control
dial
Set fully to the COOL
side
Fan speed High
Engine speed Maximum speed
Air conditioner
switch
ON
3. Inspect the refrigerant by watching the
flow of air bubbles through the sight glass
(2).
Refer to “Check list for refrigerant volume”
on page 5-44.
4. Tilt up the canopy.
Refer to “Tilting up the canopy” on page
5-61.
<TL8>
5. Check the temperature of the
compressor’s high pressure pipe (1) and
low pressure pipe (2).
Refer to “Check list for refrigerant volume”
on page 5-44.
<TL10/TL12>
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