Husqvarna DXR140 Operator's Manual page 45

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.
Check the oil level in the display under "SERVICE" and
the tab "OIL REFILL". Refill if the level is below 80%.
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.
Adjust to correct amount of grease.
Wear and damage
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.
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.
MAINTENANCE AND SERVICE
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
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.
Leakage
NOTICE! Leakage can cause serious mechanical
breakdowns and an increased risk of slipping. Wash the
machine regularly to increase the chance of detecting
leakage at an early stage. Deal with leaks as quickly as
possible and refill if necessary.
Hydraulic fluid
Leakage of hydraulic fluid leads to an increased risk of dirt
getting into the hydraulic system which can lead to
breakdowns and mechanical damage. If you detect
hydraulic fluid underneath the machine or on the base
plate it is probably due to leakage.
Check for leakage at the hose connectors, couplings and
cylinders. Leakage can also occur at other hydraulic
components and can manifest itself with a strip of dirt.
Cracks
General
A clean machine makes it easier to detect cracks.
The greatest risk of crack formation is:
• At weld seams
• At holes or sharp corners
Lower part
Check in particular whether cracks have appeared around
outrigger mountings both on the lower part and on the
outriggers, gear ring mounting and weld seams between
the machine body and the track sides.
Arm system
Check in particular whether cracks have appeared on the
arm system's joints, cylinder mountings and weld seams.
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English 45