DCE80-100E
Technical Handbook
Main hydraulics
Service
16
P.Group 70
TDCE01
04GB
Checking the pressures and settings
1. Open the accumulator evacuating valve 42 and start the en-
gine.
2. Stop the engine to check that the stopping device is working.
When making the following tests, use a manometer with a
hose of suficcient length so as the reading can be made from
inside the operator’s cab.
3. Start the engine and let it run at approximately 1200 r/min.
4. Close the accumulator evacuating valve 42.
5. Servo pressure on test point 8. The pressure should be 35±5
bar and it cannot be adjusted.
6. Steering pressure on test point 15. Allow the engine to run in
the mid-speed range and turn the steering wheel to full lock
in one direction. Pressure setting, see hydraulic plate. Cor-
rect with adjusting screw 2 as required.
7. Accumulator charging pressure on test point 10. Pressure
setting, see hydraulic plate. Correct with adjusting screw 1.
8. Main hydraulic pressure on test point 9, and lifting section
pressure on test point 14. The pressure of each output shall
be equal.
The pressure is set individually for each truck and is stated
in the delivery specification and the hydraulic plate.
The pressure should be set equally on adjusting screws 12
and 13 so that the truck can only just lift its rated load at the
appropriate load centre.
The adjusting screw must be sealed after making any adjust-
ment.
42
The numbers corrspond to the hydraulic diagram
1. Adjusting screw, accumulator charging pressure
2. Adjusting screw, steering system pressure
7. Test point, brake system cooling circuit,
max. 1 bar
8. Test point, servo pressure, not adjustable
9. Test point, main hydraulics
Shall be same pressure as 14
10. Test point, accumulator charging
12. Adjusting screw, main pressure limiting valve
Set the same as 13
13. Adjusting screw, main pressure limiting valve
Set the same as 12
14. Test point, separate lifting section
Shall be same pressure as 9
15. Test point, LS-signal from steering valve
Test and adjusting points for valve
block and main valve
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