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Installation
4
Installation
The tractor may not be hitched to the machine if
the maximum permitted total weight or axle load
for the tractor is exceeded.
The load on the tractor's front axle may not be
less than that specified.
All basic settings and adjustment must always be
carried out on a level surface with the machine
hitched to the tractor and the wing sections
folded down.
4.1
Tractor requirements
If the K80 model ball coupling is to be used, ensure that
the tractor's hitch device can withstand negative ball
pressure.
4.2
Tractor hydraulic system
requirements
Hydraulic connectors
The tractor must have:
•
3-4x double-acting hydraulic connectors, depending
on the equipment option.
See chapter "5.3.1 Dimensions and colour coding on the
hydraulic hoses" for more detailed information.
Oil temperature
Väderstad recommends that the temperature of the
hydraulic oil during operation be kept between 40 and
60° C for best performance and longevity.
Hydraulic oil temperature
0 ºC
40 ºC
3
2
1. Recommended temperature range for hydraulic oil.
2. Outside the recommended temperature range for the
hydraulic oil.
3. Hydraulic oil temperature without guaranteed
function and with reduced life expectancy.
Viscosity
Väderstad recommends that the viscosity of the hydraulic
oil during operation is kept between 20 and 50 cSt for
best performance and longevity.
14
60 ºC
80 ºC
1
2
400 cSt
50 cSt
3
2
1. Recommended viscosity range for hydraulic oil.
2. Outside the recommended viscosity range for the
hydraulic oil.
3. Hydraulic oil viscosity without guaranteed function
and with reduced life expectancy.
Purity
Väderstad AB recommends a hydraulic oil purity of 18/
16/13 according to ISO 4406 for best performance and
longevity.
Oil quality
Väderstad recommends that mineral oil be used in
accordance with ISO VG 46–68.
Pressure levels
Väderstad AB recommends a maximum pressure level of
200-210 bar. The pressure will drop slightly when
continuous hydraulic power is taken out, however it
should not drop below 190 bar in order to maintain the
best performance.
The free return connection must have a maximum
pressure of 6 bar.
3
Viscosity
20 cSt
10 cSt
1
2
903815-en-gb; 23.09.2021
3
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