A Foreword – Reading instructions 11 Symbol explanation function descriptions The following symbols are used in function descriptions, the sym- bols are based on standard symbols used in wiring and hydraulic di- agrams. 1 2 3 4 1. Electric control signal 2. Electric force 5 6 3. Hydraulic control signal 4. Hydraulic force 7 8 M 5. Hydraulic motor 6. Hydraulic oil pump with variable displacement 7. Hydraulic oil pump with fixed displacement 8. Electric motor 9 10 9. Accumulator 10. Disc brake 11 12 11. Filter D790-1 12. Radiator 13. Bulb 13 14 D797-F 14. Control system, two control units with CAN-buss 15. Restriction 15 16 16. Adjustable restriction 17 18 17.
Inductive position sensor 19 20 18. Electrically controlled servo valve 19. Thermal by-pass valve 20. Temperature-controlled switch 21 22 Pa 21. Temperature sensor 23 24 Pa 22. Pressure sensor 23. Pressure-controlled switch 25 24. Hydraulic cylinder 25. Double-acting hydraulic cylinder 26. Spring brake cylinder 26 27 27. Valve block 28. Shuttle valve 28 29 000523 29. Non-return valve UDRF01.04GB Maintenance manual DRF 400–450