Pressure Release - Volvo ECR50D Operator's Manual

Operating techniques
106

Pressure release

4
A
B
Control lockout lever
Pressure release
Pressure release
Before removing or connecting hydraulic hoses the
pressure in the hydraulic system must be released.
WARNING
Risk of high pressure injection.
Residual pressure in the hydraulic system could
lead to oil under high pressure jetting out and cause
serious injury, even if the engine has not been
running for some time.
Always release the pressure before any kind of
service of the hydraulic system is carried out.
1 Place the machine on firm and level ground.
2 Lower the attachment and the blade to the
ground.
3 Shut down the engine and turn the ignition key
to running position/ignition.
4 Move the control lockout lever (4) down to unlock
the system.
5 Shift the rollers on the joysticks a couple of times
to the right and to the left.
6 Then move the joysticks and the driving levers
in all directions a couple of times to release all
residual pressure.
7 To release the pressure in the accessory line
V1138066
(X1) and boom offset:
Select function and shift the rollers on the
joysticks to the right and to the left in accessory
line (X1) position and in boom offset position.
NOTE!
It must be strictly assured that the engine cannot be
started after hydraulic couplings have been
opened.