Rauch AXENT Series, Operator'S Manual

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General maintenance and servicing 9
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9.11.1 Checking the hydraulic hoses
Hydraulic hoses are exposed to high strain. They must be checked regularly and
immediately replaced if damaged.
Hydraulic hoses are subject to ageing. They may be used for a maximum of six
years, including a maximum storage period of two years.

Check the hydraulic hoses regularly, but at least before the start of the
spreading season, by visual inspection for damage.

Replace hydraulic hoses if they exhibit one or more of the following types of
damage:
-
Damage to the outer layer up to the inlet
- Embrittlement of the outer layer (cracking)
- Deformation of the hose
- Detachment of the hose from the hose fitting
- Damage to the hose fitting
- Strength and function of the hose fitting reduced by corrosion

Check the age of the hydraulic hoses before the start of the spreading sea-
son. Replace the hydraulic hoses if the storage and usage time is exceeded.
9.11.2 Replacing hydraulic hoses
Preparation:

Make sure the hydraulic system is de-pressurised and has cooled down .

Provide collecting vessels for leaking hydraulic oil under the separation
points.

Provide suitable plugs to prevent hydraulic oil from leaking out of the
non-replacement lines.

Provide suitable tools.

Wear protective gloves and safety goggles.

Make sure the new hydraulic hose matches the type of hydraulic hose to be
replaced. Pay special attention to the correct pressure range and hose length.

The hydraulic circuit contains two nitrogen tanks. They are under residual
pressure even after the system has been shut down. Slowly and carefully
open the screw connections of the hydraulic circuit.
NOTICE
The date of manufacture of a hose line is specified on one of the hose fittings
with the year/month (e. g. 2012/04).
NOTICE
Observe the different maximum pressure specifications on the hydraulic lines to
be replaced.