Case CX130 - Page 249

HYDRAULIC PRESSURE SETTINGS
7 - 13
CASE TRAINING CENTER
AUGUST 2000
Main relief valve (A)
Test
1. Display the screen "CHK1".
2. With the engine at full speed, select mode "S".
3. Operate and hold in position the dipper retracting
control (against cylinder stops).
4. Read the pressure on the diagnostic screen:
When the dipper cylinder is against the stops, the
pressure is the standard value for 2 seconds, then
at the higher pressure - 2-stage relief value for 8
seconds before falling back to standard pressure.
NOTE: To read the higher pressure - 2-stage relief
level again, the control lever should be released, then
operated against the cylinder stops.
Adjusting the higher pressure -
2-stage relief
CX130
CS00E551
1. Loosen the lock nut (2) and turn the valve
adjusting screw (1) until the higher pressure -
2-stage relief level is reached.
Tighten the screw (1) to increase pressure.
Untighten the screw (1) to reduce pressure.
2. Tighten the lock nut (2) while holding the adjusting
screw (1) in position.
3. When the adjusting screw has been tightened,
check the pressure again and make sure there are
no leaks.
Pump
Standard
pressure
Higher
pressure level
CX130 P2
343±3 bar
(34.3±0.3 MPa)
363±5 bar
(36.3±0.5 MPa)
2
1