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MAINTENANCE
4.2
PRECAUTIONS FOR MAINTENANCE
Before starting any lubrication or maintenance work read the
Fundamental Safety Instructions on page 16.
Park the Excavator at a safe place on level ground. Proceed
according to the instructions on page 200.
"Parking the Excavator". Lower the attachment flat onto the
ground. Move all control levers to neutral position.
Stop the engine and move all control levers through their shift
positions to relieve the pressure in the hydraulic system.
Refer to page 202 "Stopping the Engine" for detailed descrip-
tion of the stopping procedure.
A warning plate
must be fixed in the Operator's cab before any lubrication or
maintenance work is started.
Before any maintenance work is started, set the maintenance
safety switch to 0 position. Refer to page 141 for location of
the maintenance safety switch. In the 0 position the engine
can not be started. Secure this position by inserting a padlock
into the holes of the switch. Up to three padlocks can be
attached to the holes provided.
NOTICE
Some checks and adjustments can only be done with the
engine running. For such jobs two men are necessary.
Thereby, the controls must not be left unattended, while the
other man carries out checks and adjustments.
The man in the operator's seat must keep constant visual
contact with the other one and they must agree on suitable
communication signals before they start their work.
Block the machine to prevent machine movement
Always use safety devices to block hydraulic cylinders. Never
rely on the machine hydraulic system to hold when working
on the loader attachment. A hydraulic line or cylinder could
fail or someone could accidently strike the control levers
causing the loader to fall.
Relieve all pressure in the hydraulic system before servicing
the hydraulic system.
Oily cloth and inflammable material must be removed from
the machine. Clean the excavator before starting mainte-
nance work.
Switch-off battery main switch and remove key, before work-
ing on the electrical system.
Wear safety clothing, goggles, respirator and other safety
devices, whenever working conditions make this necessary.
Observe the local safety rules.
Never allow unauthorized persons access to the machine
during lubrication and maintenance work.
"CAUTION MACHINE MAINTENANCE"
4.2 PRECAUTIONS FOR MAINTENANCE
243
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