This instruction show you guide on how to bleed air from the fuel system for FENDT 900 Vario Tractor.
DANGER:
High-pressure lines must not be opened, as the common rail system is permanently pressurised and serious injuries may result.
Preparations:
Version I
Prime with the hand pump (A).
If necessary, bleed the low pressure circuit: vent plug (A)Unscrew
Prime with the hand pump until fuel is discharged without any air bubbles.
Close vent plug (A).
A
Vent plug
B Water drain plug
C Filter cap
Pump the hand pump (A) until strong resistance is felt,then continue pumping for a few more strokes.
Start the engine, allow to warm up for max. 30 seconds.
NOTE: Air in the high-pressure system may result in unacceptable pressure fluctuations in the common rail system.
Therefore, the tractor should be operated under low load for about 5 minutes.
Version II
Open bleed screw (A) for the fuel pre-filter.
Keep pumping with manual delivery pump (B) until strong resistance is felt; pump on for a few strokes after this.
Close the bleed screw for the fuel pre-filter.
Start engine.
NOTE: Air in the high-pressure system may result in unacceptable pressure fluctuations in the common rail system.
Therefore, the tractor should be operated under low load for about 5 minutes.
