DCE80-100E
Technical Handbook
Main hydraulics
Service
15
P.Group 70
TDCE01
04GB
Take great care during all work on the hydraulic system. Avoid
being close to pressurized hydraulic components and hoses.
Observe strict cleanliness, since the presence of foreign matter
can easily result in a valve seizing or in other operational distur-
bances.
Checking the hydraulic hoses
Check hydraulic hoses and connections for leakage, cracking
and wear. Replace hoses if there is the slightest indication of
weakness. Tighten the connections as required.
Breather filter
The hydraulic reservoir is fitted with a breather filter which pre-
vents airborne impurities from entering the reservoir. Change the
filter as specified in the lubrication chart. The filter is of the spin-
on type. To change the filter, remove the old filter element, dis-
card it and screw on a new element.
Changing the hydraulic fluid
Change the hydraulic fluid in accordance with the lubrication
chart.
1. Remove the bottom plug of the hydraulic reservoir and drain
off the fluid.
2. Refit the plug and fill the reservoir with fresh hydraulic fluid.
The capacity is given in the Technical Specification.
Mounting of fittings on hydraulic hoses.
1. Measure the length of the hose to be replaced.
2. Thread the sleeve ANTICLOCKWISE onto the end of the
hose until the hose bottoms in the sleeve. The sleeve has an
internal thread which will thus be pressed into the hose.
3. Grease the adapter thread and screw in the adapter
CLOCKWISE until it bottoms on the sleeve. The hose will
thus be clamped between the threads of the sleeve and
adapter.
4. Carefully flush the hose with white spirit, or equivalent, and
blow compressed air through it, so that the hose is absolutely
clean.
WARNING!
The hydraulic system includes a high-pressure accumu-
lator. Open the accumulator evacuating valve 42to re-
lease pressure before working on the hydraulic system.
42
42. Accumulator evacuating valve
1
2
3
4
1. Hose
2. Sleeve
3. Adapter
4. Measure the hose
length like this:
IMPORTANT!
The above procedure may be used only on 1" and smaller
diameter hoses. In addition, it may only be used on hoses
shown in the spare parts catalogue, with the sleeve and
adapter separated from the hose.
Hoses shown in the spare parts catalogue as complete
units with the end connections fitted must be ordered as
complete units in accordance with the catalogue.
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