Trouble Shooting - Cub Cadet 8454 Service Manual

F. OIL
- Checking of compressor oil
The oil used to lubricate the compressor shall be
supplemented when the components in the sys-
tem need to be replaced or a large amount of gas
leaks as the compressor is circulated into the sys-
tem during operation.
The amount of compressor oil: 265 cc
- How to handle the oil
• The humidity, dust, metal pieces are not allowed
to enter into the oil.
• The mixing with oil is not allowed.
• After using the oil, you should cover the vessel
as the moisture shall be absorbed to the oil if the
oil is left in the air for a long time after using.
G. CHECKING OF REFRIGERANT LEAKAGE
When you doubt the leakage of refrigerant or disas-
semble the connection assembly, it is required to carry
out the leakage test with a leakage detector.
- Check the torque of connection assembly and
tighten the loosened part and then check the leak-
age of gas with a leakage detector.
- If the leakage continues after tightening the con-
nection assembly, it is required to emit the refriger-
ate and remove the connection assembly to check
the damage of contact surface and if found a dam-
age, change it with the new one.
H. DISASSEMBLING AND ASSEMBLING
a. Disconnect air conditioner hose 3 and 4 connected
between air conditioner assembly, compressor,
and receiver drier.
b. Disconnect two-drain hose wiring connected to air
conditioner assembly.
Disengage two M6 nuts and remove air conditioner
assembly and air conductor in a body. Disengage 6
damping screws and remove air conductor.
c. Disconnect air conditioner hose 1 between com-
pressor and capacitor and hose 2 between capaci-
tor and receiver drier.
d. Loosen M8 bolt and nut to remove receiver drier.
Loosen 4 M10 washer-holding bolts to remove
capacitor.
e. Remove two setting nut for air conditioner and wir-
ing and then disconnect air conditioner assembly
in a body.
f. Disconnect duct and ventilation hole from air condi-
tioner assembly.
g. Remove setting bolt and disconnect compressor.
h. Disconnect hose cover in cabin and disconnect air
conditioner hose 3 and 4.
D569-W02 May-2003
K&T Saw Shop 606-678-9623 or 606-561-4983
www.mymowerparts.com
I. AIR CONDITIONER CONTROL
Air conditioner switch consists of air flow and tempera-
ture control switches. Airflow control switch is oper-
ated in three stages of LOW, MIDDLE and HIGH. Turn-
ing temperature control switch clockwise enables to
select the highest temperature.
Air conditioner ventilating grill can be controlled freely
in left, right, front and rear.
Air conditioner can be operated only with start switch
ON.
J. CHECKING OF THE AIR-CONDITIONING
If air conditioner operated, make sure it operates ef-
fectively and properly.
a. Compressor: Check it for setting state, belt tension,
b. Capacitor: Check if set and if foreign matters stuck

3.2 TROUBLE SHOOTING

You can find the troubles simply during the daily check-
ing and season-in checking by the naked eyes and
audio, and the early finding of troubles and proper re-
pair enable to extend the life time of each machine.
A. TROUBLE SHOOTING BY AUDIO/VISUAL
a. The noise caused by the loosened V-belt
b. Abnormal noise near the compressor
c. Abnormal noise from the compressor
d. Mud and dust adhered to the condenser
e. Pollution of piping connection section or com-
SYSTEM
and oil level.
to capacitor pin. If having foreign matters, clean ca-
pacitor pin.
In case the V belt is loosened or worn out, the sliding
sound is generated. In this time, adjust the tension
of V belt. In case of wearing, change with new one.
Check whether the compressor or mounting bracket
bolt is loosened and if loosened, tighten it more.
The abnormal noise inside the compressor results
from the broken suction valve. Disassembling, re-
pair or replacement is needed.
As the mud or dust reduce the radiation effect re-
markably which affects the cooling capacity, it is re-
quired to wash the mud or dust etc. with water. In
this case, care shall be taken not to occur the dam-
age or distortion of the condenser fan.
pressed section by oil
The place contaminated by oil means that the re-
frigerant is leaked with the compressor oil from the
inside cycle by a certain cause. If found the con-
taminated place, check the leakage of gas with a
leakage detector and tighten it strong or change the
components. Check the gasket and O-ring of the
compressor, and sealed part of shaft carefully.
CABIN SYSTEM
9-13