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D1WWTD02E

Service Manual

DPC130X

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Disassembly and assembly procedures

Disassembly and assembly should be carried out by Walvoil technicians. In case the control valve doesn’t work properly, we advise
you to contact our After-sales Department.
However in case the disassembly and assembly operations are absolutely unavoidable, you must observe the following prescrip-

tions and assign these operations to highly qualified technicians in the field of hydraulics.

Do not disassembe the control valve when an explosive atmosphere is present and the control valve surface temperature is outside

the environmental temperature range as specified before (see page 9).

• The valve can keep high internal pressure; release the inside pressure and make sure that all machine actuators are in a rest

position before removing the piping. In any case unscrew safely and carefully connections and fittings, so to avoid a fall of load or
high-temperature hydraulic fluid jet. Remind to wear the safety equipment and goggles;

• do not remove electrical parts by removing the cable or by opening these components; in case these operations are absolutely
unavoidable, please contact out After-sales Department;
• since hydraulic devices are all precisely machined with very accurate clearances, carry out the disassembly and assembly work
in a clean place;
• make sure to prevent dust, sand and other similar powder materials from entering into the device;
• before removing the hoses, attach suitable indications on them so to be able to locate their positions later on. It is also advisable
to label dismounted parts and to write down their original location;
• before disassembling, read and strictly observe the assembly/disassemby instructions (shown in the following paragraph).
• since disassembled parts might show rust, apply them anticorrosive oil and seal them;
• before assembling the control valve on the operating machine, again make sure it has not been affected by the various hydraulic
tests (e.g. relief valve setting, leak test...).

First phase: preassembling

• Collect tie rods kit according to the BOM.
• Collect inlet plate, sections and endplate according to the BOM.
• Collect OR kits according to the BOM.
• Clean carefully grinded planes.
• Starting from the inlet plate, screw by hand the tie rods (from the side of the shorter thread) on the inlet plate.
• Mount the working sections according to the scheme.
• Mount the end plate.
• Put on the spring-washers on the tie rods and screw the nuts by hands.

• Settle the control valve elements on a rigid plane and finally screw the nuts to the torque of 30 Nm -

22 lbft

(A) Assembling kit

For valve with:

With inlet section type

BR-BN-BRS

Part code

With inlet section type BRF

Part code

1 working section

5TIR108185

5TIR108153