CONTROL AND REGULATION OF PRESSURE IN THE
HYDRAULIC CIRCUITS
(PC12R)
20-37
TESTING AND ADJUSTMENTS
CONTROL AND REGULATION OF PRESSURE
IN THE HYDRAULIC CIRCUITS (PC12R)
.
The control valve consists of the spools that command:
Command
Ports
Arm (Open - Close)
A1 - B1
Swing (Right - Left)
A2 - B2
Engine travel to the left
(Backwards and Forwards)
A3 - B3
Engine travel to the right
(Backwards and Forwards)
A4 - B4
Boom (Raise - Lower)
A5 - B5
Bucket (Curl - Dump)
A6 - B6
Blade (Lower - Raise)
A7 - B7
Boom swing (Right - Left)
A8 - B8
Hammer (Throw)
B9
PC12R-8 PC15R-8
RKP04891
DIESEL
P1
TANK
COOLER
2
1
3
4
P2 P3
RKP04870
A
B
3
2
1
4
5
6
7
8
RKP04880
A
9
B
2
H
Test conditions:
.
Engine: at working temperature.
.
MIN and MAX. engine speeds: within permissi-
ble limits
.
Hydraulic oil: 45 ± 55 ëC.
Before removing the plugs in order to measure the
pressures, release the residual pressures in the
circuits (see «ELIMINATION OF THE RESIDUAL
PRESSURES IN THE CIRCUITS AND IN THE
TANK») and put the safety-engagement levers into
their locked positions.
After having connected the pressure gauges, pres-
surise the tank. For details, see «PRESSURISA-
TION OF THE TANK».
Summary of Contents for PC12R-8 MISTRAL
Page 1: ......
Page 2: ...40 28 PC15R 8 ...
Page 4: ...00 2 PC12R 8 PC15R 8 ...
Page 17: ...GROUP 10 ...
Page 18: ...40 28 PC15R 8 ...
Page 30: ...10 12 PC12R 8 PC15R 8 PAGE INTENTIONALLY LEFT BLANK ...
Page 32: ...10 14 PC12R 8 PC15R 8 PAGE INTENTIONALLY LEFT BLANK ...
Page 34: ...10 16 PC12R 8 PC15R 8 PAGE INTENTIONALLY LEFT BLANK ...
Page 36: ...10 18 PC12R 8 PC15R 8 PAGE INTENTIONALLY LEFT BLANK ...
Page 38: ...10 20 PC12R 8 PC15R 8 PAGE INTENTIONALLY LEFT BLANK ...
Page 40: ...10 22 PC12R 8 PC15R 8 PAGE INTENTIONALLY LEFT BLANK ...
Page 42: ...10 24 PC12R 8 PC15R 8 PAGE INTENTIONALLY LEFT BLANK ...
Page 44: ...10 26 PC12R 8 PC15R 8 PAGE INTENTIONALLY LEFT BLANK ...
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Page 133: ...GROUP 20 ...
Page 134: ...40 28 PC15R 8 ...
Page 158: ...20 24 PC12R 8 PC15R 8 PAGE INTENTIONALLY LEFT BLANK ...
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Page 199: ...GROUP 30 ...
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Page 283: ...GROUP 40 ...
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