Grillo FD 1500 2WD Uso Y Mantenimiento página 19

If you do the maintenance on the engine, keeping the basket up, engage the two security locking, red painted on
hydraulic cylinders.
Never work on the engine if you have not engage the locking (fig. 15).
LUBRICATION
Never dispose of used oil, petrol or any other type of pollutant in the environment!
Proper maintenance and correct lubrication help to keep the mower working perfectly.
ENGINE
For the lubrication intervals follow the directions given in the engine manual; it is in any case indispensable to
change the oil and the filter after the first 20-30 working hours.
For the diesel engine use SAE 15 W 40, lt. 5 (fig. 16 e fig. 17).
Change the oil filter (fig. 18) and the gas oil filter (fig. 21/A).
The first precaution to be taken is that the engine is maintained correctly with a clean air filter and that the engine
oil is up to the level.
Keep the engine compartment, the muffler and the collectors clean.
Use a vacuum cleaner if possible.
Check the air filter every 4 hours or even more frequently if in dusty conditions.
In order not to reduce the air needed to cool the radiator, the vent must always be kept clear. Make sure
the radiator is always kept clear.
The radiator fan is worked from an hydraulic engine.
If the radiator protection vents is obstructed and the cooling fluid and the hydraulic oil temperature are over 98° C,
an automatic sensor inverts automatically for a few minutes the fan direction of travel, in order to clean it.
This operation can be made also by hand, working for a few second the fan inverter tilting device.
To check and clean the radiator fan, remove the pin.
RADIATOR REFILLING AND RESPECTIVE BLEED
If there will be no more liquid in the cooling system, you need to refill it, using the proper refilled plug, which is
positioned in the expansion bin, in the right side of the drive seat: to uncover it, you must take off the black
protection on the top of the fairing.
NB: The air bleed must be done always in the following way:
With cold engine, please take off the plug, which is used to refill, from the extension bin; loosen the bleed
screw, which is located on the top of the radiator (fig. 36), till to see the cooling liquid to flow out.
After that please tighten the screw and the expansion bin plug.
WARNING! Do not forget to do this operation with cold engine.
HYDRAULIC MOTORS
Check the level in the oil-reservoir with cold engines (fig. 4): it must reach half-graduated scale.
If more oil is needed, add OSO 46.
CAUTION!!
Change the oil in the hydraulic engines the first time after 500 hours and after every 1000 hours.
If the oil needs topping up, use OSO 46 (fig. 6/B).
The oil must be changed before the 300 hours if:
1) the oil is black;
2) the oil is a whitish colour (it is contaminated with water);
3) there is black coloured residue (partial oil deterioration).
To remove the oil undo the oil reservoir drain plug (fig. 20). To screw it (fig. 6/B), pay attention to the possible
impurities, which may obstruct the circuit, causing serious problems to your machine. Quantity 34 lt.
When you substitute the hydraulic oil, you must substitute also the two oil filters (fig. 21); pay attention to the
filtration level.
Do not increase the wheels towing hydraulic system pressure over 280 bar; the hydraulic pump and the hydrostatic
engine on wheels may be damaged.
To regulate the cutting deck and the basket hydraulic pressure you must work on the screw, endowed with jam
nut and located on the distributor. This operation must be made in a authorized assistance centre.
155 CM CUTTING DECK TRANSMISSIONS
Use synthetic oil LSX 75 W 90 (API GL4 + GL5; API MT1 e PG2), lt. 1,550, substitute every 300 hours.
If you notice some loss of oil, check it and substitute the seal rings, to avoid the deterioration of the whole
transmission.
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