DEUTZ-FAHR FL35-70HP Series, Operation Manual

Page: 307 / 417

306
1 Park the tractor on flat ground
The engine must be closed and cooling liquid must be
adequately cooled.
2. Suitable vessel will be placed under the plug
screw.
3. Open the water drain valve
③
to discharge cooling
liquid
4. Re-close the water drain valve
③
, fill the circuit
with mixture of cleanser via the injection port on liquid
storage tank.
Fig. 8-55
5. Start the engine to make it under idle running for about half an hour.
Important:
When the engine is under operation, mixture of cooling liquid in the liquid storage tank has not been
reduced to the minimum limit.
6. Shut off the engine, exhaust the system and fill it with water; and then re-start the engine to reach about
1000rpm and operate for 5 minutes.
7. Re-exhaust the system
8. Cooling liquid will be used to fill the circuit so that the engine will be operated for several minutes. If
necessary, cooling liquid will be supplemented to the system.
Important:
1. In winter, frequently check the antifreeze concentration according to ambient temperature. If
necessary, timely recover to normal concentration.
2. As for the tractor that has not used anti-freezing solution, when water temperature is reduced
to below 70
℃
, water shall be discharged completely under the situation that the engine is under
idle running to prevent cooling water from freezing and damaging the engine.