jcb JS300 Service Manual page 397

connected. Take care not to kink the hoses. Do not allow
the condenser to hang on the hoses unsupported.
Removal of the condenser matrix will require the
assistance of a refrigeration engineer or suitably trained
person since the refrigerant needs to be drained from the
system.
!M
WARNING
The air conditioning system is a closed loop system
and contains pressurised refrigerant. No part of the
system should be disconnected until the system has
been discharged by a refrigeration engineer or a
suitably trained person. You can be severely
frostbitten or injured by escaping refrigerant.
4-3-4-1_2
!M
CAUTION
Do not operate the air conditioning system when there
is no refrigerant in the system, otherwise the
compressor will be damaged.
4-3-4-4
!M
WARNING
Do not carry out welding operations close to the air
conditioning refrigerant circuit. A poisonous gas is
produced when refrigerant comes into contact with
naked flames. Do not smoke or allow naked flames
close to the refrigerant circuit.
BF-1-9
Removal
1 Prepare the machine.
Maintenance, Maintenance Positions.
2 Let the engine cool down.
3 Open the cooling pack compartment cover. Refer to
Section 2 - Access
Topics ( T B-26)
4 Disconnect the binary switch electrical connector 7
from the harness.
5 Put a label on the hoses 5 and 6 before disconnecting
to aid identification when replacing.
B-28
Refer to Section 2,
K Related
Apertures.
9813/5100-1
Section B - Body and Framework
Air Conditioning Condensor
6 Disconnect the air conditioning hoses 5 and 6 from
the condenser. Plug the hose ends to prevent ingress
of dirt and loss of fluid.
Note: To prevent damaging to the condenser when
removing or installing the hoses, it is necessary that the
hexagon flats on the pipe stubs must be held with a
spanner whilst loosening or tightening the hose nuts.
When removing components or hoses, retain any
lubricant within the component/hose and fill the
system with the same amount of clean lubricant (PAG
Oil).
7 Support the condensor 3.
8 Remove the bolts and nuts 1.
9 Remove the condensor 3 from the bracket 2.
Replacement
Replacement is the opposite of the removal procedure.
During the replacement procedure do this work also:
– After replacement recharge the system.
– Operate the air conditioning and check the hose
connections for leaks. In the cab, set the air
conditioning to maximum cooling and check that
cooled air comes from the vents.
– Torque tighten the hose connectors 5 and 6.
K Table 2. Torque Settings ( T B-28)
Table 2. Torque Settings
Item Nm
5 33 - 39
6 14 - 20
Removal and Replacement
kgf m lbf ft
3.3 - 4.0 24.3 - 28.7
1.4 - 2.0 10.3 - 14.7
B-28