Case CX130 - Page 251

HYDRAULIC PRESSURE SETTINGS
7 - 15
CASE TRAINING CENTER
AUGUST 2000
Adjustment
CI00E508
1. Loosen the lock nut (1) and turn the adjusting
screw (2) of the valve concerned until the correct
pressure is reached.
2. Tighten the lock nut (1) while holding the adjusting
screw (2) in position.
3. When the adjusting screw has been tightened,
check the pressure again and make sure there are
no leaks.
4. Reset the secondary relief valve (A) to its original
pressure (refer to "Setting the standard
pressure").
Swing secondary relief valves
(I, J)
Test
CD00E143
1. Disconnect the swing cancellation solenoid valve
connector (green).
2. Display the diagnostic screen "CHK1".
3. Start the engine and select the "S" mode.
4. Operate the swing brake control on the instrument
panel (indicator lamp ON).
5. Slowly operate the swing lever to the right, then
gradually increase engine speed to full speed to
ensure that the swing is locked.
6. Repeat Step 5 for the LH swing, the pressures
should be:
Note the pressures if they are not correct to find the
number of shims needed for adjustment. One 0.1 mm
shim corresponds to 5 bars of pressure.
Function CX130
Boom raising P1
383±5 bar
(38.3±0.5 MPa)
Boom lowering P1
383±5 bar
(38.3±0.5 MPa)
Dipper
retracting
P2
383±5 bar
(38.3±0.5 MPa)
Dipper
extending
P2
383±5 bar
(38.3±0.5 MPa)
Bucket opening P1
383±5 bar
(38.3±0.5 MPa)
Bucket closing P1
383±5 bar
(38.3±0.5 MPa)
1
2
Function CX130
RH swing P2
279±4 bar
(27.9±0.4 MPa)
LH swing P2
279±4 bar
(27.9±0.4 MPa)