Hitching the machine
33
Hydraulic connec-
tions
Hydraulic coupling only pressureless
Only couple the hydraulic hoses to the tractor when both tractor and
machine hydraulics are pressureless. Hydraulics under pressure can
cause accidental movements of the machine.
Avoid oil mixture
When using the machine in combination with different tractors, im-
proper oil mixture can take place. Improper oil mixture can destroy
tractor parts.
Avoid entering of dirt into the hydraulic system
The hydraulic system can get seriously damaged. Personal injuries or
material damage can be caused.
Check hoses and couplings
Before connecting, prove all hydraulic hoses for damages. After con-
necting check all hydraulic couplings for tight connection. Defective
hydraulic hoses or bad connected hydraulic couplings can cause inju-
ries or unforeseen movements of the machine.
Secure tractor hydraulic devices
In transport position tractor hydraulic devices must be secured against
unintentional movements. Unintentional movements of the hydraulic
device can cause serious injuries or unforeseen movements of the
machine.
Check correct position of hydraulic hoses
Hydraulic hoses may not stick or tighten. Pay attention to sufficient
free space. Torn or stuck hydraulic hoses cause unverifiable move-
ments of the machine and serious injuries.
Take care of the correct laying of hydraulic hoses
Hydraulic hoses may not stick or tighten. Take care of sufficient free
space. Worn or stuck hydraulic hoses can cause heavy damage to the
machine or severe injuries.
Check, if applicable, the following connections from the tractor to the
machine:
•
hydraulic connections
•
electronic connections
Before coupling, the hydraulic block must be adapted:
•
Hydraulic block - open centre
•
Hydraulic block - closed centre
•
Hydraulic block - load sensing
Summary of Contents for 7420
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