91
M2.0-1055-011
HYDRAULIC
Hydraulic Circuits
Sideshift - Right Circuit
Refer to Figure 15993. When SS right is selected
SVA1A will energize and shift fully. SPA will ramp open
and the pump motor speed will ramp up in proportion to
the voltage change across POT 3. Supply oil after SPA
will flow through SVA1A, out port A1A and into the left
side of the double acting sideshift cylinder, forcing the
carriage to move to the right.
Oil in the right hand side of the SS cylinder will be
pushed out of the cylinder, into Port A1B of the main
manifold, through SVA1A, and out Port T to the reser-
voir.
When the SS right command is removed, (POT 3 in
neutral position) SPA and the pump motor are ramped
closed/off and SVA1A is de-energized.
Fourth Hydraulic Function (Second
Accessory)
The truck can also be equipped with a Fourth hydraulic
function (second accessory). Refer to Figure 15855.
SVA2A/SVA2B is the solenoid valve that will direct oil
flow to that function. SVA2A/SVA2B is a high flow
valve.
Operating the Fourth hydraulic function is accom-
plished by pressing and holding the switch on the left
hand side of the multitask handle and then rolling the
thumb ball to the left or right. Either SVA2A or SVA2B
will energize and shift while SPA and the pump motor
operate in proportion to POT 3 voltage.
Fifth Hydraulic Function (Third
Accessory)
The truck can also be equipped with an optional Fifth
hydraulic function (third accessory). Oil flow for this
Fifth function is routed through SVA2A/SVA2B and di-
rected to that function by a solenoid controlled valve
mounted on the actual attachment. When equipped
with a Fifth hydraulic function, the switch on the left
hand side of the multitask handle (normally used for
TPA and second accessory) is pressed (and held) and
the thumb ball is rolled up or down (actuating TBS or
TDS). This means TPA will not be available on a truck
equipped for five hydraulic functions (Hoist, Tilt, and
three accessories).
Figure 15993
Suction
Return
Relief
Pressure
Crown 2007 PF15675-11
To Next Page
Loading...