Komatsu Galeo PC800-8 Shop Manual page 902

SEN01053-01
Installation
Carry out installation in the reverse order to
q
removal.
[*1]
a Install each hose so that it will not be twisted.
a When installing the air conditioner hoses, take
care that dirt, dust, water, etc. will not enter
them.
a When tightening each joint of the air condi-
tioner hose, check that O-ring (70) is fitted to it.
a Apply sufficient amount of compressor oil for
R134a [DENSO: ND-OIL8, ZEXEL: ZXL100PG
(equivalent to PAG46) ] to each O-ring.
3
Tightening torque for air conditioner refriger-
ant piping
Thread size
16 × 1.5 11.8 – 14.7 Nm {1.2 – 1.5 kgm}
22 × 1.5 19.6 – 24.5 Nm {2.0 – 2.5 kgm}
24 × 1.5 29.4 – 34.3 Nm {3.0 – 3.5 kgm}
Filling air conditioner circuit with refrigerant
q
(R134a)
Fill the air conditioner circuit with refrigerant
(R134a).
a Quantity: 1,330 ± 50 g
18
Tightening torque
50 Disassembly and assembly
Refilling with compressor oil
q
a If the air conditioner condenser was
replaced, add compressor oil for R134a
(DENSO: ND-OIL8, ZEXEL: ZXL100PG
(equivalent to PAG46)) to the air condi-
tioner compressor by 40 ml. (If the com-
pressor oil is added too much, the cooling
performance lowers. Take care.)
5
Air conditioner compressor: Compressor
oil for R134a [DENSO: ND-O IL8,
ZEXEL: ZXL100PG (equivalent to
PAG46), 40 ml]
a If any air conditioner hose was replaced,
add compressor oil for R134a (equivalent
to PAG46) (DENSO: ND-OIL8, ZEXEL:
ZXL100PG) to the air conditioner com-
pressor by the following quantity. (If the
compressor oil is added too much, the
cooling performance lowers. Take care.)
5
Air conditioner compressor: Compressor
oil for R134a [DENSO: ND-OIL8, ZEXEL:
ZXL100PG (equivalent to PAG46) ]
: 45 ml
(After replacement of hose between
compressor and condenser)
: 30 ml
(After replacement of hose between
condenser and receiver drier)
: 21 ml
(After replacement of hose between
receiver drier and air conditioner unit)
: 80 ml
(After replacement of hose between
compressor and air conditioner unit)
a Since the compressor oil for R134a
absorbs moisture very easily, put the cap
on the oil container to shut off air immedi-
ately after supplying the oil.
a The compressor oil for R134a can dissolve
acrylic resin and polystyrene. Take care.
PC800, 850-8