A Foreword – Reading instructions 9 page Function descriptions Function descriptions are schematic overviews that describe how a function works as well as which components and signals work to- gether. Function descriptions describe the function in a logical flow from in- put signal to desired output signal. Most functions require that pre- set conditions are fulfilled for the function to be activated. In these cases, the conditions are listed above the illustration. Function descriptions use symbols to illustrate components such as valves, sensors, etc.
Example of function description UDRF01.04GB Maintenance manual DRF 400–450 7 6 2 4 Bromsar – 4.3 Servobromssystem 5 B 13 D790-2 P T D D797-R D797-F 11 10 8 C 12 Pa C D D 9 4 Pa 3 7 ACC B 6 C P 2 1 B 004729 1. Bromsoljepump 8. Slutkontakt bromsljus (S216) 2. Bromsoljefilter 9. Brytkontakt bromsoljetryck (S204) 3. Ackumulatorladdningsventil 10. Reglerenhet ram fram (D797-F) 4. Ackumulatorer 11. Reglerenhet ram bak (D797-R) 5. Bromsventil 12. Bromsljus (H411L & H411R) 6. Bromscylindrar 13. Reglerenhet KIT (D790-2), Varningslampa bromstryck 7. Hjulbromsar Hydraulschema basmaskin UDRF01.04S Underhållamamual DRF 400–450 1 2 3 4 5 004899