Removal And Installation Of Floor Frame Assembly - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02641-02
Removal and installation of floor
frame 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 radiator 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
(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. Accordingly, put
on protective goggles while you are collect-
ing 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 the operator's cab assembly by refer-
ring to "Removal and installation of operator's
cab assembly".
4. Remove cover (1).
22
conditioner refrigerant
°
.
50 Disassembly and assembly
5. Disconnect ground (2).
6. Disconnect the following PPC hoses from the
travel PPC valve. The color of the band is;
(3): Red
q
q (4): No color
q (5): Green
(6): Blue
q
a Prepare an oil sump.
7. Disconnect top and bottom of connector (7).
Top: P09
Bottom: P10
PC300, 350-8