3-56 OM 28Z3 US – Edition 2.0 * * 28Z3b340.fm
Operation
3.28 Releasing the pressure on the work hydraulics
Caution!
Before connecting or removing hydraulic lines from the attachment, make sure
the work hydraulics is not under pressure!
Important!
The hydraulic system of the machine is still pressurized even when the engine is
not running! The hydraulic quick-couplers can be released, however they cannot
be re-attached due to the residual pressure in the lines.
• Release the pressure in the sections of the system and hydraulic lines which are
to be opened before starting setup or repair work, e.g. fitting/removing an
attachment!
Releasing pressure
Release the pressure as follows:
☞ Park the machine on firm and level ground.
☞ Lower the attachment completely to the ground.
☞ Stop the engine.
☞ Turn the starter key to position 1.
☞ Move the control lever or the pedal of the hydraulic circuit in all directions repeatedly.
➥ The pressure in the system sections that have been actuated is released. This can
be seen by the brief movement the hoses make as the pressure is actually released.
➥ Uncouple the attachment immediately after the pressure has been released,
otherwise pressure can be created again!
Pressure release with proportional controls (option)
Release the pressure as follows:
☞ Park the machine on firm and horizontal ground
☞ Lower the attachment completely to the ground!
☞ Stop the engine
☞ Turn the ignition key to position 1
➥ Release the load only after you have sstarted ignition and waited 2 seconds
(otherwise if actuated too early, the characteristic curve is shifted and the load is not
released)!
☞ Release the pressure on the auxiliary hydraulics by pressing the pedal connected with
the left or right-hand side proportional joystick to the left and right
➥ The pressure in the system sections that have been actuated is released. This can
be seen by the brief movement the hoses make as the pressure is actually released.
Uncouple the attachment immediately after the pressure has been released, otherwise
pressure can be created again!
To Next Page
Loading...
Need help?
General
