Malfunction and Remedies
Central lubricating system – bleeding and removal of blocks
WARNING
Hazard of severe injuries from parts flung away with great force.
The parts inside the spring-loaded actuator are pre-stressed with great spring force
and may be flung away in case of improper opening, causing severe injuries to peo-
ple.
– Never open the spring-loaded actuator using force or improperly.
– Stop the machine and shut down the diesel engine.
– Secure the diesel engine against accidental start-up, keep the ignition key out of
reach of any third party!
– Secure the vehicle against rolling away using the two wedges.
– Use a SW 24 ring spanner to turn the emergency release bolt (4) (hexagonal bolt
centrally positioned on the cylinder) anticlockwise (maximum torque 35 Nm, path
approx. 70 mm) until a hard stop can be felt.
– The spring-loaded actuators are released, the vehicle is totally without brakes.
– The vehicle may be towed to the next workshop or a secure parking place under
compliance with the corresponding safety regulations.
8.12 Hydraulic valves
All hydraulic valves are electrically controlled. Problems with solenoid valves may be
detected using specific test cables, which are supplied with each machine. These test
cables may only be connected to the solenoid valves by trained and instructed spe-
cialist personnel.
Should an electrically controlled valve malfunction, then in any case, without excep-
tion, call in a specialist. Never try to shake the solenoid valve concerned to remedy
possible contact problems or a possible line break. If the valve is suddenly opened
during such tries, then the person concerned may suffer deadly injuries.
WARNING
Searching and remedying malfunctions on all components of the hydraulic system is
exclusively the task of trained specialists. We expressly warn of tries to repair or self-
performed tests on hydraulic valves under electro-magnetic control. If during such
tests or tries to repair, parts of the hydraulic system are suddenly put under pressure,
then this may trigger unwanted machine movement. This may pinch or even crush
people or body parts.
8.13 Central lubricating system – bleeding and removal of blocks
During all work on the central lubrication system, make sure of utmost cleanliness. In
no case should dirt enter the lubrication system.
Should the grease reservoir inadvertently have been run empty, then the grease pump
must be bled. For this purpose, remove the main pipe from main distribution and
switch on the pump for so long until air-free grease emits from the main pipe. Screw a
lubricating nipple into the input of the main distributor and using the grease gun, pump
grease into the main distributor for so long until grease emits at the bearings. Then,
reconnect all pipes.
If the pipe system is blocked, then the grease will be pressed out at the safety valve
(1) (directly at the pipe output of the pump). To remove this block, proceed as follows:
495 / 546
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