Removal And Installation Of Air Conditioner Unit - Komatsu WA250-6 Shop Manual

700 Cab and its attachments

Removal and installation of air conditioner unit

Removal and installation of air
conditioner unit
Removal
k
Stop the machine on a level ground and set
the lock bar to the frame to fix the front and
rear frames.
k
Lower the work equipment to the ground,
stop the engine, apply the parking brake,
and put chocks under the tires.
k
Disconnect the cable from the negative (–)
terminal of the battery.
Precautions for handling refrigerant
q
k
Collect refrigerant (R134a) beforehand.
a Ask professional traders for collecting
and filling the refrigerant (R134a).
a Never release the refrigerant (R134a)
to the atmosphere.
k
If the refrigerant (R134a) gets inside
ones eyes, it may cause blindness.
Therefore, make sure to wear protec-
tive glasses when collecting or filling
the refrigerant. Collecting and filling
work must be conducted by a qualified
person.
k
If the radiator coolant temperature is
high, you may scald yourself with the
hot coolant when disconnecting the
heater hoses and draining the cool-
ant. Wait until the coolant is cooled,
and then drain the coolant.
1. Recover the refrigerant (R134a).
2. Loosen the radiator cap to drain the coolant.
6
Radiator: 22 l
WA250, 250PZ-6
3. Pull out each switch from panel cover (1) on
the left side of the operator's seat and discon-
1
nect the following connectors.
(2): CN-L10
q
(3): CN-L11
q
(4): CN-L09
q
a Different
switches and connectors.
4. Pull out each switch from panel cover (1) on
the right side of the operator's seat and discon-
nect the following connectors.
(5): CN-L19
q
(6): CN-L07
q
(7): CN-L08
q
(8): CN-L06
q
a Different
switches and connectors.
[*1]
SEN03858-00
specifications use
CPW11631
specifications use
CPW11631
different
different
15
50-700