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Disassembly And Removal - Bosch Rexroth H-4WEH...XE Series Operating Instructions Manual

4/2 and 4/3 directional valves, internally pilot-operated, externally pilot-operated
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11 Disassembly and removal

Danger of damage to property and personal injuries at pressurized or energized
system parts!
When working at pressurized or energized system parts, there is the danger of
injury by leaking hydraulic fluid or electric current.
Before disassembly, ensure that the hydraulic system is depressurized and the
electrical control is de-energized.
Explosion hazard and/or risk of fire due to the ignition of an existing explosive
atmosphere!
Serious injuries caused by explosion pressure and fire may result.
During disassembly and exchange work, there may be no explosive atmosphere.
The machine end-user of the system must provide suitable environmental
conditions.
Falling of an incompletely disassembled valve!
An incompletely disassembled valve may fall down and cause injuries.
During the disassembly, secure the valve against falling down.
Have sufficiently dimensioned collecting containers, sufficient cleaning cloths and
medium-binding materials ready in order to collect or bind leaking hydraulic fluid.
1.
De-energize and de-pressurize the relevant system part.
2.
Professionally remove the electrical connections.
3.
Prepare a container for collecting the leaking hydraulic fluid.
4.
Use suitable tools to loosen the valve mounting screws of the valve.
5.
Remove the valve mounting screws and remove the valve from the flange surface.
Do not loosen the fitting between pilot control valve and main valve.
6.
Collect escaping hydraulic fluid in the provided container and dispose of it
properly.
7.
If the valve is to be returned to the manufacturer for repair, close the valve
connection surface using the protective plate supplied. Close the valve
connection surface using the protective plate supplied or protect it using
equivalent packaging in order to avoid contamination and damage.
8.
Seal the subplate in order to avoid contamination.
Disassembly and removal
wARnInG
CAUTIOn
RE 24751-XE-B/04.16, H-4WEH...XE..., Bosch Rexroth AG
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