850
Model Code Page
46. Front PTO
1. 4. 1997
8450--8750 463 8
Picture 21. Hydraulic system of the front PTO, 8450---8750.
1. Pressure oil from the tractor hydraulics (1,8---1,9 MPa)
2. Clutch pressure into the PTO unit cone clutch (about 1,1
MPa)
3. Return oil into the tractor hydraulic system
4. Lubricating oil into the oil co o l er
5. Return oil from the oil cooler
6. Oil pump for the cooling circuit (pump is different as on
6000---8150 tractors)
Note! The oil cooler by---pass valve, 0,3 MPa, is t he
same as on front PTO 6000---8150. The oil cooler is dif-
ferent as on 6000---8150 tractors.
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