Cleaning, maintenance and repair
KG / KX / KE BAH0063-6 04.16
167
12.15.1 Identification of hydraulic hose lines
The valve chest identification provides the
following information:
Fig. 182/...
(1) Manufacturer's marking on the hydraulic
hose line (A1HF)
(2) Date of manufacture of the hydraulic hose
line
(15/02 = year/month = February 2015)
(3) Maximum permitted operating pressure
(210 bar).
Fig. 182
12.15.2 Maintenance
intervals
After the first 10 operating hours, and then every 50 operating
hours
1. Check all the components of the hydraulic system for tightness.
2. If necessary, tighten screw unions.
Before each start-up:
1. Check the hydraulic hose lines for visible defects.
2. Repair any areas of chafing on the hydraulic hose lines and
pipes.
3. Replace any worn or damaged hydraulic hose lines immediately.
12.15.3 Inspection criteria for hydraulic hose lines
For your own safety, comply with the following inspection criteria!
Replace hydraulic hose lines when finding any of the following
inspection criteria during the inspection:
Damage to the outer layer up to the ply (e.g. scouring points,
cuts, cracks).
Brittleness of the outer layer (crack formation of the hose
material).
Deformations which do not match the natural shape of the hose.
Both in a depressurized and pressurised state or when bent (e.g.
layer separation, bubble formation, pinching, bends).
Leak
points.
Damage or deformation of the hose assembly (sealing function
restricted); minor surface damage is not a reason for
replacement.
Movement of the hose out of the panel.
