Komatsu Galeo PC800-8 Shop Manual page 1101

50 Disassembly and assembly
12. Remove mounting bolt (24) and connector
(25).
13. Disconnect heater hoses (22) and (23) and air
conditioner hose (26).
a Put tags to the disconnected hoses and
tubes to prevent a mistake in re-connect-
ing them.
14. Remove the 7 mounting bolts and air condi-
tioner unit assembly (27).
a (18): Removed controller.
PC800, 850-8
Installation
[*1]
Carry out installation in the reverse order to
q
removal.
[*1]
[*1]
a When installing the air conditioner circuit
hoses, take care that dirt, water, etc. will
not enter them.
a When connecting each air conditioner
hose, check that the O-ring is fitted to the
joint.
a Check that each O-ring is free from flaw
and deterioration.
a Coat the O-ring with compressor oil for
R134a (DENSO: ND-OIL 8, ZEXEL: ZXL
100 PG (PAG 46 or equivalent)) and
tighten the nuts with 2 spanners.
3
Hose clamp (M6 bolt):
3
Hose screw of M16 x 1.5:
3
Hose screw of M22 x 1.5:
3
Hose screw of M24 x 1.5:
Filling air conditioner circuit with refriger-
q
ant (R134a)
Fill the air conditioner circuit with refrigerant
(R134a).
a Quantity of refrigerant: 1,330 ± 50 g
Refilling with coolant
q
Add coolant through the coolant filler to the
specified level. Run the engine to circulate the
coolant through the system. Then, check the
coolant level again.
5
Coolant: 100 l
SEN01060-01
7.84 – 11.8 Nm {0.8 – 1.2 kgm}
11.8 – 14.7 Nm {1.2 – 1.5 kgm}
19.6 – 24.5 Nm {2.0 – 2.5 kgm}
29.3 – 34.3 Nm {3.0 – 3.5 kgm}
3