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Hydraulic pressure
Item
Unload pressure
Boom relief pressure
Arm relief pressure
Bucket relief pressure
Swing relief pressure
Boom swing relief pressure
Blade RAISE relief
pressure
Blade LOWER relief
pressure
Travel relief pressure
Control circuit oil pressure
Outlet pressure of PPC
valve
LS differential pressure
PC88MR-10
Machine model
Measurement condition
Hydraulic oil temperature: 45 to
55°C
Engine: High idle
Power mode (P)
Hydraulic pump outlet pressure
with all control levers in
NEUTRAL position
Hydraulic oil temperature: 45 to
55 °C
Engine: High idle
Power mode (P)
Hydraulic pump outlet pressure
with all measurement circuits
relieved
Hydraulic oil temperature: 45 to
55 °C
Engine: High idle
Hydraulic pump outlet pressure
with all measurement circuits
relieved
Hydraulic oil
temperature: 45 to
55 °C
Engine: High idle
Oil temperature: 45
to 55 °C
Engine: High idle
a LS differential
pressure =
Pump
outlet
pressure
LS
pressure
Standard value
Unit
for new machine
MPa
{kg/
cm
2
}
MPa
{kg/
cm
2
}
MPa
{kg/
cm
2
}
Work
equipment
control
lever:
MPa
NEUTRAL
{kg/
Work
cm
2
}
equipment
control
lever: Full
stroke
All control
levers in
NEUTRAL
MPa
{kg/
Bucket
cm
2
}
CURL
Lever
moved
halfway
20 Standard value tables
Standard value table for machine
PC88MR-10
Repair limit
3.43 ± 0.98
3.43 ± 0.98
{35 ± 10}
{35 ± 10}
26.5 ± 0.98
26.5 ± 1.47
{270 ± 10}
{270 ± 15}
26.5 ± 0.98
26.5 ± 1.47
{270 ± 10}
{270 ± 15}
26.5 ± 0.98
26.5 ± 1.47
{270 ± 10}
{270 ± 15}
20.5 ± 0.98
20.5 ± 1.47
{210 ± 10}
{210 ± 15}
26.5 ± 0.98
26.5 ± 1.47
{270 ± 10}
{270 ± 15}
12.7 ± 0.98
12.7 ± 1.47
{130 ± 10}
{130 ± 15}
21.1 ± 0.98
21.1 ± 1.47
{215 ± 10}
{215 ± 15}
26.5 ± 0.98
26.5 ± 1.47
{270 ± 10}
{270 ± 15}
3.2 ± 0.5
3.2 ± 0.5
{33 ± 5}
{33 ± 5}
0
0
{0}
{0}
3.14 ± 0.5
3.14 ± 0.5
{32 ± 5}
{32 ± 5}
-
2.5 to 4.4
{-}
{25 to 45}
-
2.11 ± 0.1
{-}
{21.5 ± 1}
20-7
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