72
difference between the dip angles. (See Fig. 5-19)
When the tilt lever is pushed forward, the high-pressure oil enters into the cylinder
body from the cylinder tail, moving the piston forward and causing the mast assembly to
tilt forward until 6 degrees. When the tilt lever is pulled backward, high-pressure oil
enters into the cylinder body from the guide sleeve and moves the piston backward,
tilting the mast assembly backward.
Fig. 5-19 Tilt cylinder
(1) Ear ring (2) Dust ring (3) Snap ring (4) Yx-ring (5) O-ring (6) Guide sleeve
(7) Bushing (8) O-ring (9) Piston rod (10) Cylinder body (11) Yx-ring (12) Wearing
(13) Piston (14) Yx-ring
5.1.7 Oil tank
Oil suction filter is fixed in the oil tank while the return oil filter is fixed in the oil
returning pipelines to make sure the cleanness of the supplied oil.
5.1.8 Hydraulic oil circuit
The hydraulic system principle diagram see Fig. 5-20 and the hydraulic oil circuit
see Fig. 5-21.
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