Operation Manual
56
Move the tilt slide valve right (as shown in the Fig..) to close “P
1
” chamber and “T” chamber and the
hydraulic oil flows to “c” port from “P” chamber to open the one-way valve and then into the rear
cylinder chamber through “A
1
” port to tilt up the bucket. The hydraulic oil in front cylinder chamber
flows to “d” port from “B
1
” port to open the one-way valve and then return into the oil tank
.
Fig.3-15 Bucket “Tilt Up”
(6) Bucket “Tilt Down”
Move the tilt slide valve left (as shown in the Fig. 3-16) to close “P
1
” chamber and “T” chamber and the
hydraulic oil flows to “d” port from “P” chamber to open the one-way valve and then into the front
cylinder chamber through “B
1
” port to tilt down the bucket. The hydraulic oil in the rear cylinder
chamber flows to “c” port from “A
1
” port to open the one-way valve and then returns into the oil tank.
When the external force on the slide valve is removed, the valve returns to the neutral (closed) position
automatically under the action of the elastic force of return spring.
Fig.3-16 Bucket “Tilt Down”
(7) Overload filling valve (for interior structure, see Fig. 4)
The oil circuit of front/rear chamber of tilt cylinder is equipped with one overload filling valve
respectively (with the quantity being changed willfully as required). This valve is used to eliminate oil
trapping or negative pressure in cylinder when the bucket is subject to external impact loads or
interference from other mechanisms.
