Transport and installation
37
4.2.4
Establishing hydraulic connections
A hydraulic oil supply and control by the towing vehicle are required for all work functions.
Procedure:
Clean the hydraulic connector and hydraulic
socket if necessary.
Connect the plug-in coupling, SVK coupling
size 3, to the correct SVK sleeve on the
towing vehicle and check that it is correctly
engaged.
Fig. 24
:
Hydraulic connections
General safety instructions for the hydraulic system
1.
The hydraulic system is under high pressure.
2.
Observe the maximum permissible operating pressure of 150 bar.
3.
Ensure that a correct connection is established between the connector and socket.
4.
When connecting hydraulic hoses to the tractor hydraulics, ensure that the hydraulics are
depressurised on both the tractor and trailer side.
If the connections are swapped, function will be reversed
– risk of accident.
5.
Coupled hydraulic hose lines:
o
Must easily withstand all movements during cornering without excess tension, bending
or friction
o
Must not rub against other parts
6.
Check hydraulic hoses and couplings regularly and replace them if they are damaged or old
(at least every 6 years).
7.
The replacement hoses must meet the requirements of the machine manufacturer.
8.
When locating leaks, use suitable aids due to the risk of injury.
9.
Never try to close leaks with your finger.
10.
Liquids (hydraulic oil) escaping under high pressure can penetrate the skin and cause serious
injuries.
11.
In case of injuries, consult a physician immediately
– risk of infection.
12.
Before working on the hydraulic system, depressurise it and switch off the tractor engine.
13.
Only specialist workshops are permitted to perform repair work on the hydraulic system.
14.
Ensure that the oil is of the required grade.
15.
Caution when draining hot oil
– risk of burns.
16.
When coupling and uncoupling, make sure that no dirt enters the couplings of the
hydraulic hoses.
