Maintenance And Lubrication; Hydrostatic Axle - Grillo FD450 Manual De Instrucciones

CAUTION!
- Disconnect the spark plugs before performing any cleaning, maintenance or repair
operation. Always wear suitable clothing and working gloves.
- When the machine or part of it is lifted to carry out maintenance operations, always
remember to use suitable fixing tools such as holders and safety locks.
- When carrying out maintenance operations and/or when the machine is tilted without
safety locks or supports, never leave it unguarded in places where inexperienced people
and children could have easy access to it.
- Protect the environment: carefully dispose of used oils, petrol and any other pollutant
product!
- Effective maintenance and correct lubrication help to keep the machine fully efficient.
ENGINE
For the lubrication intervals, follow the instructions outlined in the engine manual. For the INTEK
7220 professional series engine use SAE 30 oil (quantity 2,2 litres). Frequently check the engine
oil level (fig. 13, B). Replace both the engine oil and filter (fig. 13, C) as outlined in the maintenance
table. To unscrew the oil drain plug (fig. 11, A) insert a rubber pipe then unscrew the end part of
the plug and let the oil drain into a container; use a counter-key to hold the fixed component of the
plug. Remember to protect the belts, they must not come in contact with the oil. The first
precaution is to ensure that the engine is correctly serviced with the air filter, cooling fins
and cylinder head clean and the oil at the correct level. Check the air filter every 4 hours or
even more often in very dusty environments (fig. 6, A). Check that the engine cooling intake grid is
always clean (fig. 13, A).

HYDROSTATIC AXLE

Check the level when the engine is cold using the oil dipstick (fig. 14, A) and the level gauge
located on the cap of the hydraulic oil tank (fig. 16, A). Frequently clean the hydraulic motor cooling
fins and the fan especially in summer and every 4 hours in very dusty environments (fig.17).
Replace the oil after the first 50 hours, and then every 200 hours. Use engine oil 20W50 approx.
quantity 6 litres. To replace the oil follow the instructions below:
1. Unscrew both drain plugs (fig. 15, A – B)
2. Remove the left cover to gain access to the oil refilling cap placed on the tank (fig. 16, A).
3. Unscrew the oil filter of the hydrostatic transmission and clean it. Replace if necessary (fig. 12,
A).
4. Inside the tank there is a hydraulic filter (fig. 14, B). This filter does not require any special
maintenance.
5. Once the oil has been totally drained, tighten both plugs again (fig. 15, A – B).
6. Activate the by-pass lever (fig. 27, A) by pushing the lever towards the machine to let the oil
drain from the main hydrostatic circuit.
7. Remove the connection on the hydrostatic transmission (fig. 18, A) and fill the hydrostatic
chamber with oil (fig. 18 – HYDRO CHAMBER).
8. Remove the cap on the hydrostatic transmission (fig. 19, A) and fill the gear chamber with oil
(fig. 18 – GEAR CHAMBER).
9. Tighten the cap and fit the connection, then fill the tank with oil (fig. 16, A).
10. Purge the hydrostatic transmission following the instructions below:
a) put the machine in a steady, safe position with the front wheels raised from the ground,
make sure the by-pass valve is activated, switch the engine on, wait a few minutes then repeatedly
engage the forward and the reverse gear by pressing the pedal (fig. 1, n. 1).
b) deactivate the by-pass valve (fig. 27, A) by pulling it and repeatedly engage the forward
and reverse gear by pressing the pedal (fig. 1, n. 1).
c) Put the machine on the ground again and check if the machine moves forward and stops
correctly: in case of poor performance, loss of traction or noises coming from the hydrostatic axle,
repeat the purge (see point no. 10I.
11. Check the level via the oil dipstick (fig. 14, A) and the level gauge located on the cap of the
hydraulic oil tank (fig. 16, A). If necessary, add fresh oil.
FD450/ Translation of the original instructions

MAINTENANCE AND LUBRICATION

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