Husqvarna DXR300, Operator'S Manual

Page: 43 / 60

English
– 43
MAINTENANCE AND SERVICE
Level check
Position the machine on a flat surface. Clean the component
before it is opened for reading or filling in order to prevent dirt
entering the system. If the oil level is low, refill with the type
and quality as per the 'Hydraulic fluid and lubrication” table in
the 'Technical data” section.
Hydraulic fluid
Manoeuvre the machine so the arm system’s cylinders are
retracted and the outriggers are completely folded.
Refilling is needed if the level is more than 1 cm below the
max mark.
Slew reduction gear unit
Locate and loosen the dipstick. Wipe it clean, lower it and
read off the level.
Drive motor
Manoeuvre the machine until one of the plugs is level with the
middle of the hub and the other one is at the top position.
Unscrew the level plug. The oil level should reach up to the
hole.
Hammer lubrication
Check that there is grease in the receptacle.
Wear and damage
Wear of shafts and slide bearings
Bearings and any shafts necessary must be replaced in the
event of play in joints and cylinder mountings. Replace or
repair damaged components.
• If there is play in joints the bearings must always be
replaced.
• Shafts must be replaced if they have wear damage. If
there is wear damage on an expanding sleeve it indicates
that it has not been sufficiently tightened.
• Swing joints must be kept lubricated in order to be able to
press out dirt and water that enters and to reduce wear on
shafts and bearings.
Wear to rubber components
Check that caterpillar tracks and outrigger feet are intact. If
they are so worn that the metal is visible they should be
replaced.
Wear to hydraulic hoses
Do not use hoses that are distorted, worn or damaged. Make
sure that the cords are not visible. Always have a spare hose
on hand. Damaged hoses must be replaced immediately.
• Check that none of the hoses are rubbing against sharp
edges. Be alert to the risk of abrasive jets.
• Adjust the length of hydraulic hoses so that they are never
entirely stretched.
• Ensure that the hose is not twisted during mounting.
• Avoid severe bends in the hose.
Hydraulic couplings
• Check that the couplings are not damaged. Damaged
couplings can damage hoses with the result that they
come off. Change damaged couplings immediately.
• The hydraulic couplings should be lubricated before
tightening to reduce friction.
Wear to electric cables
NOTICE! Deal with worn components as quickly as
possible. There is an increased risk of mechanical
breakdown if the machine is used despite damaged or worn
components.
!
WARNING! The power cable must be
disconnected when electric cables are
checked. Check that the cables’ insulating
casings are not damaged. Change damaged
cables immediately.