PRESSURE TESTING
7 - 5
CX EXCAVATORS
CX240
PRESSURE TESTING
PRESSURE SPECIFICATIONS
Name:
PIN #
Condition
CX240
Work mode
S : Standard Mode
Hydraulic oil temperature
45
~
55 ° C
113
~ 131
°F
Full Throttle Loaded engine
revolutions in:
H Mode
2150 r.p.m.
(H Mode)
Part Name Set
Pressure
Measuring
Method
Reading
Main
STANDARD
4970 ± 45 psi
Arm Circuit
* P1 or P2
Relief POWER
BOOST
5410 ± 45 psi
Arm Circuit and Power
Boost button
* P1 or P2
Boom Circuit
UP
✸
5685 ± 70 psi
Boom Up Circuit
* P2
Relief DOWN
✸
3555 ± 70 psi
Boom Down Circuit
* P2
Bucket Circuit
Relief
OUT
IN
✸
5685 ± 70 psi
Bucket Circuit
* P2
Arm Circuit
Relief
OPEN
CLOSE
✸
5685 ± 70 psi
Arm Circuit
* P1
Swing Motor
Crossover Relief
LEFT
RIGHT
4055 ± 70 psi
Swing Motor Crossover
* P1
travel Crossover
Relief
LEFT
RIGHT
5120 ± 70 PSI Travel Crossover
* P1 & P2
Pilot Circuit
570
± 45 psi
Pilot Test Port
* P3
✸NOTE:
Circuit pressures are listed for reference only. Listed values are low flow settings and
are not accurate when high flows are applied. However if adjusting secondary relief becomes
necessary for service. Over set the main relief and run the engine at very low rpm’s. less than half
throttle.
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