30
Two or more hydraulic circuits operating
When two or more hydraulic systems operate, each
system will operate at a different pressure.
If pump flow to a specific system is not controlled,
the system requiring a lower operating pressure will
work faster than the system requiring a higher pres-
sure, because the flow will have to overcome less
resistance.
To prevent this situation, the pressure compensat-
ing valve regulates the oil flow directed to the sys-
tem operating at a lower load.
When two spools are operated simultaneously
pump pressure is applied to the metering element of
the pressure compensating valve in both valve sec-
tions.
Both metering elements therefore move upwards al-
lowing oil to flow to the load check valves. At the
same time the aperture in the spool portion of the
pressure compensating valve is uncovered to allow
operating pressure to be sensed in the load sensing
gallery.
Pump pressure will rise until it exceeds the pressure
of the check valve of the system operating at the
heaviest load and the pressure in the load sensing
line has a value similar to that of the high pressure.
The pressure required to operate the system with a
lower load is now too high and, if not limited, it will
result in this system operating instead of and faster
than the system with a higher load.
To compensate for this condition, the load sensing
pressure moves the metering element of the pres-
sure compensating valve in the system with a lower
load downwards and restricts the flow to the system.
This balancing of flow and pressure according to the
load ensures that both systems operate simultane-
ously and at a balanced flow rate.
Load sense relief valve operating
Pump pressure at 210 bar
Load sense pressure at 195 bar
Return to oil tank
1.
Load sense bleed orifice 1 l/min
2.
Load sense limiter (system relief valve)
3.
Return to oil tank
4.
Load sense line
5.
Pump flow balancer (unload) valve
6.
Pump flow IN
7.
To backhoe control valves
1
2
6
5
3
4
7
F29291
Copyright ©
Содержание 580SR
Страница 2: ...7 SPICER OFF HIGHWAY AXLE DIVISION 21199 www maskinisten net Copyright...
Страница 6: ...www maskinisten net Copyright...
Страница 13: ...580SR 580SR 590SR 695SR SECTION 00 SAFETY PRECAUTIONS www maskinisten net Copyright...
Страница 14: ...2 SECTION 00 SAFETY PRECAUTIONS www maskinisten net Copyright...
Страница 19: ...580SR 580SR 590SR 695SR SECTION 01 MAINTENANCE www maskinisten net Copyright...
Страница 20: ...2 SECTION 01 MAINTENANCE www maskinisten net Copyright...
Страница 24: ...2 SECTION 02 TECHNICAL SPECIFICATIONS 1 www maskinisten net Copyright...
Страница 54: ...32 SECTION 02 TECHNICAL SPECIFICATIONS NOTES www maskinisten net Copyright...
Страница 56: ...2 SECTION 17 TORQUE CONVERTERS www maskinisten net Copyright...
Страница 68: ...2 SECTION 21 TRANSMISSION www maskinisten net Copyright...
Страница 86: ...20 SECTION 21 TRANSMISSION Input Intermediate Output F29980 www maskinisten net Copyright...
Страница 87: ...SECTION 21 TRANSMISSION 21 NOTE 4WD shown www maskinisten net Copyright...
Страница 88: ...22 SECTION 21 TRANSMISSION NOTE 4WD version shown www maskinisten net Copyright...
Страница 89: ...SECTION 21 TRANSMISSION 23 1 8 TRANSMISSION 2WD COMPONENTS F27510 www maskinisten net Copyright...
Страница 90: ...24 SECTION 21 TRANSMISSION F27511 www maskinisten net Copyright...
Страница 92: ...26 SECTION 21 TRANSMISSION 1 9 TRANSMISSION 4WD COMPONENTS F27512 www maskinisten net Copyright...
Страница 93: ...SECTION 21 TRANSMISSION 27 www maskinisten net Copyright...
Страница 118: ...52 SECTION 21 TRANSMISSION Remove the bearing sleeve the synchro hub and the 2nd gear www maskinisten net Copyright...
Страница 184: ...118 SECTION 21 TRANSMISSION 1st speed reverse 2nd speed reverse F27734 F27733 www maskinisten net Copyright...
Страница 237: ...SECTION 21 TRANSMISSION 171 Remove the by pass plug the spring and the ball www maskinisten net Copyright...
Страница 248: ...182 SECTION 21 TRANSMISSION Remove the clutch piston assy www maskinisten net Copyright...
Страница 264: ...198 SECTION 21 TRANSMISSION Remove the clutch piston assy www maskinisten net Copyright...
Страница 270: ...204 SECTION 21 TRANSMISSION Remove the clutch piston assy www maskinisten net Copyright...
Страница 287: ...SECTION 21 TRANSMISSION 221 Remove the piston wear plate Remove the clutch piston assy www maskinisten net Copyright...
Страница 305: ...SECTION 21 TRANSMISSION 239 Remove the clutch hub locating ring from the shaft www maskinisten net Copyright...
Страница 312: ...246 SECTION 21 TRANSMISSION Press the forward low gear from the shaft www maskinisten net Copyright...
Страница 330: ...264 SECTION 21 TRANSMISSION 2 13 SPECIAL TOOLS P N CNH DESCRIPTION 380000676 Lifting tool www maskinisten net Copyright...
Страница 354: ...2 SECTION 25 FRONT AXLES www maskinisten net Copyright...
Страница 494: ...2 SECTION 27 REAR AXLE www maskinisten net Copyright...
Страница 578: ...2 SECTION 33 BRAKES SYSTEM www maskinisten net Copyright...
Страница 590: ...14 SECTION 33 BRAKES SYSTEM NOTES www maskinisten net Copyright...
Страница 595: ...SECTION 35 HYDRAULIC SYSTEM 5 1 2 HYDRAULIC DIAGRAM 2WS SIDESHIFT PILOT MODELS www maskinisten net Copyright...
Страница 597: ...SECTION 35 HYDRAULIC SYSTEM 7 1 3 HYDRAULIC DIAGRAM 4WS SIDESHIFT MECHANICAL MODELS www maskinisten net Copyright...
Страница 599: ...SECTION 35 HYDRAULIC SYSTEM 9 1 4 HYDRAULIC DIAGRAM 4WS SIDESHIFT PILOT MODELS www maskinisten net Copyright...
Страница 601: ...SECTION 35 HYDRAULIC SYSTEM 11 1 5 HYDRAULIC DIAGRAM 4WS CENTER PIVOT PILOT MODELS www maskinisten net Copyright...
Страница 605: ...SECTION 35 HYDRAULIC SYSTEM 15 MOUNTING SCREW TORQUE HYDRAULIC DIAGRAM www maskinisten net Copyright...
Страница 714: ...124 SECTION 35 HYDRAULIC SYSTEM NOTES www maskinisten net Copyright...
Страница 716: ...2 SECTION 39 CHASSIS www maskinisten net Copyright...
Страница 718: ...4 SECTION 39 CHASSIS CENTER PIVOT 4WS CHASSIS SIDESHIFT 2WS CHASSIS SIDESHIFT 4WS CHASSIS www maskinisten net Copyright...
Страница 728: ...2 SECTION 41 STEERING SYSTEM www maskinisten net Copyright...
Страница 760: ...34 SECTION 41 STEERING SYSTEM NOTES www maskinisten net Copyright...
Страница 762: ...2 SECTION 50 CAB HEATING AND AIR CONDITIONING www maskinisten net Copyright...
Страница 828: ...68 SECTION 50 CAB HEATING AND AIR CONDITIONING NOTES www maskinisten net Copyright...
Страница 837: ...SECTION 55 ELECTRICAL SYSTEM 9 ENGINE LINE DIAGRAM www maskinisten net Copyright...
Страница 839: ...SECTION 55 ELECTRICAL SYSTEM 11 SOLENOID VALVE LINE DIAGRAM www maskinisten net Copyright...
Страница 840: ...12 SECTION 55 ELECTRICAL SYSTEM LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 841: ...SECTION 55 ELECTRICAL SYSTEM 13 REAR LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 842: ...14 SECTION 55 ELECTRICAL SYSTEM WORK LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 843: ...SECTION 55 ELECTRICAL SYSTEM 15 WINDSHIELD WIPER WASHER LINE DIAGRAM www maskinisten net Copyright...
Страница 852: ...24 SECTION 55 ELECTRICAL SYSTEM ENGINE LINE DIAGRAM www maskinisten net Copyright...
Страница 854: ...26 SECTION 55 ELECTRICAL SYSTEM SOLENOID VALVE LINE DIAGRAM www maskinisten net Copyright...
Страница 868: ...40 SECTION 55 ELECTRICAL SYSTEM ENGINE LINE DIAGRAM www maskinisten net Copyright...
Страница 870: ...42 SECTION 55 ELECTRICAL SYSTEM SOLENOID VALVE LINE DIAGRAM www maskinisten net Copyright...
Страница 886: ...58 SECTION 55 ELECTRICAL SYSTEM ENGINE LINE DIAGRAM www maskinisten net Copyright...
Страница 887: ...SECTION 55 ELECTRICAL SYSTEM 59 SOLENOID VALVE LINE DIAGRAM www maskinisten net Copyright...
Страница 888: ...60 SECTION 55 ELECTRICAL SYSTEM SOLENOID VALVE LINE DIAGRAM www maskinisten net Copyright...
Страница 889: ...SECTION 55 ELECTRICAL SYSTEM 61 LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 890: ...62 SECTION 55 ELECTRICAL SYSTEM REAR LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 891: ...SECTION 55 ELECTRICAL SYSTEM 63 WORK LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 892: ...64 SECTION 55 ELECTRICAL SYSTEM WINDSHIELD WASHER WIPER LINE DIAGRAM www maskinisten net Copyright...
Страница 893: ...SECTION 55 ELECTRICAL SYSTEM 65 HEATER LINE www maskinisten net Copyright...
Страница 901: ...SECTION 55 ELECTRICAL SYSTEM 73 ENGINE LINE DIAGRAM www maskinisten net Copyright...
Страница 902: ...74 SECTION 55 ELECTRICAL SYSTEM SOLENOID VALVE LINE DIAGRAM www maskinisten net Copyright...
Страница 903: ...SECTION 55 ELECTRICAL SYSTEM 75 SOLENOID VALVE LINE DIAGRAM www maskinisten net Copyright...
Страница 904: ...76 SECTION 55 ELECTRICAL SYSTEM LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 905: ...SECTION 55 ELECTRICAL SYSTEM 77 REAR LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 906: ...78 SECTION 55 ELECTRICAL SYSTEM WORK LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 907: ...SECTION 55 ELECTRICAL SYSTEM 79 WINDSHIELD WASHER WIPER LINE DIAGRAM www maskinisten net Copyright...
Страница 908: ...80 SECTION 55 ELECTRICAL SYSTEM HEATER LINE www maskinisten net Copyright...
Страница 916: ...88 SECTION 55 ELECTRICAL SYSTEM ENGINE LINE DIAGRAM www maskinisten net Copyright...
Страница 917: ...SECTION 55 ELECTRICAL SYSTEM 89 SOLENOID VALVE LINE DIAGRAM www maskinisten net Copyright...
Страница 918: ...90 SECTION 55 ELECTRICAL SYSTEM SOLENOID VALVE LINE DIAGRAM www maskinisten net Copyright...
Страница 919: ...SECTION 55 ELECTRICAL SYSTEM 91 LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 920: ...92 SECTION 55 ELECTRICAL SYSTEM REAR LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 921: ...SECTION 55 ELECTRICAL SYSTEM 93 WORK LIGHT LINE DIAGRAM www maskinisten net Copyright...
Страница 922: ...94 SECTION 55 ELECTRICAL SYSTEM WINDSHIELD WASHER WIPER LINE DIAGRAM www maskinisten net Copyright...
Страница 923: ...SECTION 55 ELECTRICAL SYSTEM 95 HEATER LINE www maskinisten net Copyright...
Страница 924: ...96 SECTION 55 ELECTRICAL SYSTEM STEERING LINE DIAGRAM www maskinisten net Copyright...
Страница 967: ...SECTION 55 ELECTRICAL SYSTEM 139 www maskinisten net Copyright...
Страница 1028: ...2 SECTION 82 LOADER www maskinisten net Copyright...
Страница 1040: ...2 SECTION 84 BACKHOE www maskinisten net Copyright...
Страница 1045: ...SECTION 84 BACKHOE 7 www maskinisten net Copyright...
Страница 1047: ...SECTION 84 BACKHOE 9 www maskinisten net Copyright...
Страница 1049: ...SECTION 84 BACKHOE 11 www maskinisten net Copyright...
Страница 1051: ...SECTION 84 BACKHOE 13 www maskinisten net Copyright...
Страница 1068: ...30 SECTION 84 BACKHOE NOTES www maskinisten net Copyright...