Specifications

63
7.7 Tilt cylinder (Fig7.8)
The tilt cylinder is of double-acting type. Each truck has two cylinders which are
installed on two sides of the mast, their cylinder base are connected with frame with
pins while their piston rod ends are connected with the outer mast channels.
The tilt cylinder assembly consists of piston, piston rod, cylinder body, cylinder
base, guide sleeve and seals. The piston, welded to the piston rod, is fitted with two
Yx-rings and one wear ring on its circumference. A bushing press-fitted to the inner
side of the guide sleeve supports the piston rod .The guide sleeve is fitted with dust
seal, snap ring, Yx-ring and O-ring to prevent oil leakage and keep dust off. Fitted with
them, the guide sleeve is screwed into the cylinder body.
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 to tilt
forward until 6 degree. 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 backward until 12 degrees.
Fig7.8 Tilt cylinder
1.
Joint
6.
Guide sleeve
11.
Yx-ring
2.
Dust ring
7.
Bearing
12.
Retainer ring
3.
Snap ring
8.
O-ring
13.
Piston
4.
Yx-ring
9.
Piston rod
14.
Yx-ring
5.
O-ring
10.
Cylinder body