Komatsu Galeo PC800-8, Shop Manual

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SEN01053-01 50 Disassembly and assembly
14
PC800, 850-8
[*4]
Hose insertion depth:
70 mm
3
Radiator hose clamp:
10.8 – 11.8 Nm {1.1 – 1.2 kgm}
[*5]
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
q
Filling air conditioner circuit with refrigerant
(R134a)
Fill the air conditioner circuit with refrigerant
(
R134a ).
a
Quantity: 1,330 ± 50 g
q
Refilling with compressor oil
a
If any air conditioner hose was replaced,
add compressor oil for R134a (DENSO:
ND-OIL8, ZEXEL: ZXL100PG (equivalent
to PAG46)) to the air conditioner compres-
sor by the following quantity. (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-OIL8, ZEXEL:
ZXL100PG (equivalent to PAG46) ]
: 45 m
l
(After replacement of hose between
compressor and condenser)
: 30 m
l
(After replacement of hose between
condenser and receiver drier)
: 21 m
l
(After replacement of hose between
receiver drier and air conditioner unit)
: 80 m
l
(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.
q
Refilling with oil
Add oil through the oil filler to the specified
level. Run the engine to circulate the oil
through the system. Then, check the oil level
again.
5
Hydraulic tank: 470
l
q
Refilling with coolant
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
q
Bleed air from the fuel system. For details, see
Testing and adjusting, “Bleeding air from fuel
circuit”.
Thread size Tightening torque
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}