HATTAT A90 - Check Hydraulic Oil Level (22); Change Oil Filter in Transmission (23); Maintenance Every 1000 Hours or Yearly; Change Oil and Oil Breather Filter in Hydraulic System (24)

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8.4.12. Check hydraulic oil level (22)
When the hydraulic system is filled to the minimum
mark on the dipstick the total volume of oil is 30 lt
System oil should be filled and checked from
dipstick (1)
8.4.13. Change oil filter in transmission
(23)
- Clean surrounding parts and remove the filter
- Oil a new seal and fit the new filter. Tighten by
hand (not too tight).
8.5. Maintenance every 1000 hours or yearly
8.5.1. Change oil and oil breather filter
in hydraulic system (24)
Draining
Run the tractor for warm up the hydraulic oil.
- Remove the drain plug and drain off the oil
- Clean the plug and replace it in again
Refilling
- For refilling the oil, first open the cap
- Refill with new oil through the filling cap. The
capacity of hydraulic system is 31 liters.
- Subsequent to refilling, the engine should be
started and the hydraulic lift operated for a short
time, after which the level should be checked again.
Where the larger quantity is recommended, 31 lt.,
the oil level should come up to the upper mark on
the dipstick which is fitted on the oil filler cap.
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