Hydraulic Engines - Grillo FD 2200 4WD Manual De Instrucciones

RADIATOR BLEED
Caution! Danger: hot liquid under pressure.
In order to let the engine cool down correctly, there should be no air in the cooling circuit. Make sure that
the clamps on the water muffs are well tight and that no air can get into the circuit from the outside.
Make the air bleed in the following way:
1)Caution! For this operation always wear suitable working gloves.
2)With the liquid in the reservoir at the right level, start the engine and bring it to working temperature (to
make sure the engine thermostatic valve is open).
3)With the engine at minimum, open the engine cooling liquid refilling reservoir.
4)Unscrew the plug for the bleed on the upper part of the radiator (fig. 36).
5)With the plug open, accelerate to medium speed and slow down several times until plain liquid comes out.
6)Tighten the screw.
7)Accelerate again for some minutes.
8)Unscrew the bleed plug again and repeat the steps 5-6-7 four or five times until plain liquid comes out.
9)At the end, re-establish the liquid level in the reservoir and close the cap.

HYDRAULIC ENGINES

Check the level in the reservoir with cold engines (fig. 4). If more oil is needed, add hydraulic oil OSO 46
(total quantity: 36 litres, fig. 6, ref. B). Carry out this control periodically.
Caution! Change the hydraulic oil in the hydraulic engines the first time after 500 hours and then every 1000
hours.
The oil must be changed before the first 500 hours if:
- the oil is black;
- the oil has a whitish colour (it is contaminated with water);
- there is black residue (partial oil deterioration).
To remove the oil undo the lower oil reservoir plug (fig. 20). To fill it in, unscrew the upper cap (fig. 6, ref. B).
Pay attention to possible impurities, which may get into the circuit, causing serious problems to your
machine.
When you change the hydraulic oil, you must also change the two oil filters (fig. 46, ref. B); pay attention to
the filtration level of each filter (10 and 60 micron) and not to mix the filters up. On the dashboard there is a
warning light connected to the filter blocking sensor that shows when the filter has to be replaced.
Do not increase the drive wheels hydraulic system pressure over 280 bar; the hydraulic pump and the
hydrostatic engines on the wheels may be damaged. To regulate the cutting deck and the grass catcher
hydraulic pressure you must work on the screw with jam nut located on the hydraulic distributor. This
operation must be carried out by an Authorized Service Centre (max. pressure 230 bar).
155 cm CUTTING DECK GEAR BOXES
Use synthetic oil LSX 75 W 90 (API GL4 + GL5; API MT1 and PG2), 1.550 litres, to be changed every 300
hours. The oil level plug is positioned over the gear boxes.
If you notice any leakage, check and replace the oil seals to avoid the deterioration of the entire
transmission.
FD2200 4WD/ Translation of the original instructions
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