Removal And Installation Of Air Conditioner Unit Assembly - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02642-02
Removal and installation of air
conditioner unit assembly
Removal
k
Disconnect the negative (–) terminal from
battery.
k
In the case that you do not drain the cool-
ant, if you disconnect the heater hose
when the coolant temperature in the radia-
tor is high, you may be scalded. In this
case, wait until the coolant temperature
lowers and then disconnect the heater
hose.
k
Collect the air conditioner refrigerant
(R134a) from air conditioner circuit in
advance.
a Ask professional traders for collecting and fill-
ing operation of refrigerant (R134a).
a Never release the refrigerant (R134a) to the
atmosphere.
k
If refrigerant gas (R134a) gets in your
eyes, you may lose your sight. Accord-
ingly, put on protective goggles while you
are collecting the refrigerant (R134a) or
filling the air conditioner circuit with the
refrigerant (R134a). Collecting and filling
work must be conducted by a qualified
person.
1. Turn the upper structure by 90
2. Drain the engine coolant.
6
Coolant: Approx. 36 l
3. Remove front window (1).
4. Remove step plate (2).
5. Remove floor mat (3).
6. Remove covers (5) and (6).
2
7.
8.
9.
°
.
50 Disassembly and assembly
Pull down opening and closing lever (8) of the
outside air filter cover.
Remove outside air filter (9).
Remove rear covers (10) to (13).
PC300, 350-8