Kubota WSM L3560, Workshop Manual

Page: 77 / 801

GENERAL
L3560, L4060, L4760, L5060, L5460, L6060, WSM
G-48
Checking Refrigerant (Gas)
WARNING
• 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. (See
page 10-S19.)

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).
9Y1210824GEG0096US0
Replacing Radiator Hose (Water Pipes)
1. Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking Radiator Hose and Hose Clamp". (See page
G-37.)
9Y1210824GEG0137US0
Replacing Fuel Hose
1. Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking Fuel Line". (See page G-35.)
9Y1210824GEG0138US0
Replacing Intake Air Line
1. Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking Intake Air Line". (See page G-36.)
9Y1210824GEG0139US0
Replacing Power Steering Hose
1. Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking HST Oil Line and Power Steering Oil Line".
(See page G-36.)
9Y1210824GEG0140US0
(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 03, 2016 A