Here is the instruction show you guide on how to replace purge valve for Fendit 900 Vario COM III tractor.
Preparations:
Preparatory work:
Drain off transmission oil (approx. 87l), unscrew the screw plugs on the underside of the trans-mission.
Dismantle the 2V5 =purge valve using a socket wrench(SW 22)

Only replace the O-ings if they are damaged. Check the position of the support rings. The support rings face to-wards each other.Tighten the 2V5 = purge valve to 250 +20 Nm, tighten the screw plugs to 100 Nm

IMPORTANT: If the purge valve (2V5) was dismantled for inspection, the transmission must be topped up using the external filling station!

Top up the transmission oil
During normal maintenance work, e.g. transmission oil change and/or filter change, top up transmission oil at rear left.Observe instructions for oil type and quantity.First filling approx.87
Refilling approx. 67

Topping up the oil is always necessary when:
1 Replacing the transmission unit (ML transmission)
2 When high-pressure unit is empty, e.g. after removalof high-pressure valves or the discharge valve (purge valve)

1 Suction hose from oil reservoir
2 Vacuum gauge
3 Pump
4 230 V AC electric motor drive
5 Microfilter with filter monitor
6 Pressure hose to tractor
7 Pressure hose to the oil cleaner of the ser-vice hydraulics (does not operate when ex.temal oil filler function is in use)

NOTE:Using the external oil filler unit prevents the hy-draulic pump and hydraulic motors from running dry.
More topics for Fendt tractor,please refer to Fendt tractor trouble repair.