Komatsu PC88MR-10 Shop Manual page 1226

50 Disassembly and assembly
Cab and its attachments
a Check that the O-ring is installed for the air
conditioner refrigerant hose connection before
installation.
a Check that the O-ring is not damaged or
deteriorated.
When connecting the air conditioner refrigerant
hose, apply compressor oil (DENSO: ND-OIL8,
VALEO THERMAL SYSTEMS: ZXL100PG
(equivalent to PAG46)) for refrigerant (R134a) to
O-ring.
[*2]
a See "REMOVE AND INSTALL OPERATOR
CAB ASSEMBLY", since the floor frame
mounting bolts are tightened together with the
operator's cab assembly.
a Tighten front and rear mounting bolts (58) on the
front and rear left sides to the specified torque
from the bottom side.
Mounting bolt (58):
235 to 309 Nm {24 to 31.5 kgm}
Refill with oil (Hydraulic tank)
Refill it with oil to the specified level through the
oil filler port. Run the engine to circulate the oil
through the piping. Then check the oil level
again.
Hydraulic oil:
56 l l (specified capacity: 100 l l )
Refill with coolant
Refill it with the coolant to the specified level
through the coolant filler port. Run the engine to
circulate the coolant through system. Then
check the coolant level again.
Coolant:
10 l l
Filling of refrigerant (air conditioner gas: 134a)
Refill the air conditioner circuit with refrigerant
(air conditioner gas: R134a).
a Filling: 730 ± 50 g
50-198 PC88MR-10