MTZ 1220.1/1220.3
Section D. Construction and Operation
D64
1 - piston; 2, 12 – O-ring; 3 - body; 4 - rod; 5 – lock screw; 6 – front cover; 7 - spherical bearing;
8 – cap nut; 9 – rod collar; 10 – rod seal; 11 – protective ring, 13 – rod guide, 14 – piston seal; 15 –
piston nut
Fig. D-42. Steering hydraulic cylinder
Recommendations for operation of HSC
When assembling HSC the following operations are to be done:
- install properly the oil pipelines and hoses in accordance with the hydraulic diagram of
HSC, given on figure 2.10.1;
- protect the connecting holes of the dosing pump, hydraulic cylinder, oil pipelines and
high-pressure hoses against penetration of dirt;
- prior to starting the engine, check the tightening of all the connections of the HSC hy-
draulic system, bleed air from the hydraulic system. To do this, proceed as follows:
1. Raise the controlled axle of the tractor (for example, with adjustable jack). When the
controlled wheels are unloaded, the steering control is acting under minimal pressure and
air is removed from oil faster. The unload can also be done by disconnection of the steer-
ing hydraulic cylinder from the controlled wheels.
2. Fill the oil tank to the upper limit as seen on the level indicator.
3. Start the engine. Turn the steering wheel in both directions 3-4 times at the idling ro-
tational speed of the engine without reaching the extreme positions of turning of the steer-
able wheels. Add oil to the tank to the required level.
4. Turn the wheels from one stop to another 2-3 times. Hold the steering wheel at the
extreme positions for 4...5 seconds.
5. If necessary, eliminate the oil leaks and add oil to the top level of the tank.
6. Drive the figure of eight to check the operation of the steering control.
Содержание 1220.1
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