4 – 58 Repair Manual RRE140/160/180/200/250 © BT
Functions and parameters
Hydraulic system 6000
T-code Valid from serial number Date Publication No.
815, 816 6051502 2008-08-21 261828-040
4.10 Hydraulic system 6000
4.10.1 General
The hydraulics on the truck consist of a pump that takes oil by suction
from the tank and pumps it to the main valve located in the reach car
-
riage.
The main valve distributes the oil to the reach cylinder and the mast.
The return oil from the reach cylinder and mast is pumped via the main
valve through the filter to the tank.
4.10.2 Tank
The tank has a capacity of approximately 25 litres. It is manufactured
from electrically conductive plastic.
Topping up of the hydraulic oil is via the return filter.
The hydraulic oil from the hydraulic system and the breathing air are fil-
tered by the return filter. There is no filter between the tank and the
pump.
A separate plug for oil level checking is located on the tank.
4.10.3 Filter
Return filter
The hydraulic oil from the hydraulic system and the tank breathing air
are filtered by the return filter.
Filtering is very important for the service life of the hydraulic oil and
hydraulic system.Filtering of the hydraulic oil is by means of a filter ele
-
ment with a filter rating of 10 micrometres. Once the filter element is
saturated with particles, a bypass valve opens and the hydraulic oil
goes straight to the tank, bypassing the filter element without being fil
-
tered. The air filter and filter element can be replaced.
Dehumidification filter
For applications where there is air humidity, the intake air has to be
dehumidified before reaching the tank. If this does not happen there is
a risk of the air condensing and water mixing with the hydraulic oil.
In the cold store version, the dehumidification filter is used in combina-
tion with a special return filter with a specially adapted breather filter
connection for connecting to the dehumidification filter.
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