REPAIR MANUAL - Euromachines

32 SECTION 35 - HYDRAULIC SYSTEMS - CHAPTER 1
I. LIFTING AND SLOPING OPERATION
1. At the start by the ignition key:
-- only the solenoid valve of the hydraulic bar
(18) is operated, enabling the hydraulic
connection between the two large
chambers of the two front cylinders;
-- the hydraulic bar is fixed;
-- then, when the supply is cut off by the key
or by the immediate stop push button, the
hydraulic bar locking solenoid valve (18) is
not powered anymore and the hydraulic
bar is locked;
-- the by--pass solenoid valve (10) is not pow-
ered, the pump delivers to the reservoir.
2. To lift the machine, the following sole-
noid valves are simultaneously controlled:
-- the solenoid valve of the hydraulic bar (18)
enabling its use,
-- the by--pass solenoid valve (10) that pre-
vents the pump from delivering to the res-
ervoir,
-- the lifting solenoid valves (15) and (16) that
allow the pump to deliver to the rear lifting
cylinders, to lift the machine.
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3. To lower the machine, the following
solenoid valves are simultaneously con-
trolled:
-- the solenoid valve of the hydraulic bar (18)
enabling its use,
-- the by--pass solenoid valve (10) that pre-
vents the pump from delivering to the res-
ervoir,
-- the lowering solenoid valves (11) and (12)
assembled on the drilled block (132) that
allow the pump to deliver to the front lifting
cylinders, to lower the machine,
-- the anti--fall electric devices (11A) and
(12A) assembled on the rear cylinders, for
the rear lowering.
4. To slope the machine, the following
solenoid valves are simultaneously con-
trolled:
-- the by--pass solenoid valve (10) that pre-
vents the pump from delivering to the res-
ervoir,
-- a lifting solenoid valve (15) or (16) to lift the
wished side,
-- a lowering solenoid valve (11) or (12) to
lower the wished side, with (11A) and
(12A).
NOTE: the solenoid valve of the hydraulic bar (18) is
not powered, thus the hydraulic bar is excluded dur-
ing sloping adjustments.