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MAINTENANCE
REPLACEMENT OF HYDRAULIC HOSE LINES
Hydraulic Hose lines are subjected to natural aging. Hence, their
usable lifetime is limited to maximum 6 years.
The maximum permissible storage time of hydraulic hose
lines is 2 years. This storage period is part of the usable life-
time and must be considered when a new hose line is being
installed. If, for example, a hose line with a one year storage
time shall be installed, the remaining service life of the hose
line is 5 years. The production year and the ordering number
of the hydraulic hose lines is stamped on the hose fittings.
All hydraulic hose lines of the Excavator have to be replaced after
every 6 years at the latest, even if there are no visible damages.
Repairs on hydraulic hoses and hose lines are not allowed.
Use ONLY GENUINE KMG Replacement Hydraulic Hose
Lines.
INSPECTION OF HYDRAULIC HOSE LINES
Inspect all hoses, hose lines and fittings periodically. Check for
leaks and damages. Replace damaged parts without delay.
Hydraulic fluid escaping under pressure can cause serious inju-
ries and fire break out.
Some examples of faults on hydraulic hoses requiring replace-
ment of the concerned part:
Damages on the outer layer (e.g. chafed spots, cuts or
scratches).
Brittle top layers. Flaws on the hose material
Distortion of the hose line (strong deviation from the original
shape) under pressurized and pressureless conditions or
when bent, e.g. disintegration of hose layers or blistering.
Leaks
Detachment of hose and fitting. Damaged hose fitting
CAUTION
WARNING
4.6 LUBRICATION AND MAINTENANCE SCHEDULE
305
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