Rauch TWS 85.1, Instruction Manual

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General maintenance and service 9
84
9.8.1 Checking hydraulic hoses
Hydraulic hoses are subject to extreme stress and aging. They may only be used
for a maximum period of 6 years, including a storage period of up to 2 years.

Regularly check the hydraulic hoses for damage, at the least before the start
of the spreading season, by means of visual inspection.

Replace the hydraulic hoses if one or several of the following damage types
are identified:
-
Damages to the external layer up to the inlay
- Brittleness of the external layer (formation of cracks)
- Deformation of the hose
- Hose moves out of the hose fitting
- Damages to the hose fitting
- Reduced firmness and function of the hose fitting due to corrosion

Before the start of the spreading season, check the age of the hydraulic hos-
es. Change hydraulic hoses as soon as the prescribed period of storage and
usage is exceeded.
9.8.2 Replacing hydraulic hoses
Preparation:

Ensure that the hydraulic system is depressurised and cooled-down .

Position collecting vessels for leaking hydraulic oil under the disconnection
points.

Have suitable closing elements ready in order to prevent leaking of the hy-
draulic oil from the lines which are not to be replaced.

Have suitable tools ready.

Put on protective gloves and protective goggles.

Ensure that the new hydraulic hose corresponds to the type of the hydraulic
hose to be replaced. Particular attention is to be paid to the correct pressure
range and hose length.
NOTICE
The date of manufacture of a hose line is indicated at the hose fittings in a
year/month format (e.g. 2016/04).
NOTICE
Please also observe deviating maximum pressure specifications of hydraulic
lines to be replaced.