34
Fig.7 Diagram of front wheel drive axle
1.Shims 2. Bolt M10
×
25 3. Upright shaft 4. Retainer ring 5. Retaining ring for upright shaft
6. Shims 7. Driven pinion 8. Drive pinion 9. Differential 10. Main drive case
11. Shims 12. Final reduction driven gear 13. Shims 14. Final reduction drive gear
15. Bearing seat adjusting shims 16. Spiral bevel pinion
5.4
Use and adjustment of the full hydraulic steering gear
This steering system adopts an independent hydraulic pump. The pump is composed by an
external gear pump with axial interval self-compensation and a constant relief valve. So the
steady working performance of both the steering system and hydraulic lift system will be
ensured and there will be no disturbance as with their sharing one hydraulic pump.
5.4.1
Working principle and operation of the full hydraulic steering gear (See Fig. 8)
The working principle of the full hydraulic steering gears is shown in Fig.9. The Rear
axle housing (9) is also being made use of as the oil tank of the steering gears.
Low-pressure oil flows into Constant flow pump HLCB-D06/06 (L) (6) on the Diesel
engine (7) through the Ø18 inlet pipe of the pump. The steady high pressure oil flows into
the Full hydraulic steering gears of Model BZZ1-E80 (4) and actuates the Steering cylinder
(2) for steering action, but the overflow oil comes back to the gear pump through the oil
return pipe.
The Constant flow pump is adopted for keeping a stable oil delivery, so as to
ensure the steady working of the hydraulic steering gear.
So long as the engine is running, the hydraulic steering of the tractor could be realized
just by turning the steering wheel, and the steering operation shall never be disturbed by
hydraulic lifting operation.
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