11.6.2 Maintenance intervals
After the first 10 hours of operation and every 50 operating hours
thereafter:
1. Check if all components of the hydraulic system are tight.
2. Retighten bolt joints as necessary.
Prior to each start-up:
1. Check the hydraulic hose lines for obvious defects.
2. Check the hydraulic oil level. Refill hydraulic oil if necessary.
3. Replace worn or damaged hydraulic hose lines without delay.
11.6.3 Inspection criteria for hydraulic hose lines
For your own safety:
Replace hydraulic hose lines immediately as soon as discovering any
of the following defects:
Damage to the outer layer up to the insert (e.g. from chafing,
cuts, cracks).
Embrittlement of the outer layer (evident through the formation of
the cracks in the hose material).
Unnatural deformation of the hydraulic hose line, e.g
.
layer
separation, formation of bubbles, pinch and cutting points.
Leaking spots.
Damage, deformation or leaks in the hose fitting. Minor surface
damage does not mandate an exchange.
The hose slipping out of the fitting.
Corrosion on the fitting which may impair the operation and
stability of the fitting.
Improperly routed hydraulic hose lines, e.g. failure to observe the
bending radii or laying the hose lines across sharp edges.
The maximum period of use of 6 years has been exceeded.
The period of use is derived from the date on which the hydraulic
hose line was manufactured plus a period of 6 years.
Example: The date of manufacture of the hydraulic hose line is
specified on the fitting, e.g. (07/10 = year / month = October
2007). The period of use will, thus, end in October of 2013.
The maximum storage time of 2 years has been exceeded.
The maximum storage time is derived from the date on which the
hydraulic hose line was manufactured plus a period of 2 years.
Example: The date of manufacture of the hydraulic hose line is
specified on the fitting, e.g. (07/10 = year / month = October
2007). The maximum storage time will, thus, end in October of
2009.
