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Disassembly and replacement
Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20
11 Disassembly and replacement
Pressurized and energized system parts!
When working on system parts which have not been depressurized or de-energized,
there is the danger of injury by leaking hydraulic fluid or electric shock.
Before disassembly, make sure that the hydraulic system is depressurized and
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de-energized.
Incompletely mounted valve components falling down!
Incompletely disassembled valve components may fall down and cause injuries.
During the disassembly, secure the safety valves against falling down.
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Have sufficiently dimensioned collecting containers, non-linting cloth and
medium-binding materials ready in order to collect or bind leaking hydraulic fluid.
1.
Switch off your system, de-energize and depressurize the system and secure the
system against restarting before all disassembly works.
2.
Unload the hydraulic accumulators, if applicable.
3.
Provide for a clean environment during the disassembly.
Prepare a container or a pan for collecting the leaking hydraulic fluid.
4.
5.
Only use suitable tools to loosen the valve mounting screws.
WARNING! Risk of injury caused by incorrect disassembly! The spring preload of the
cartridge must be observed.
The mounting screws must be loosened crosswise, alternately.
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6.
Remove the control cover.
WARNING! Heavy components! When lifting safety valves or components with high
weight, there is the danger of damage to property and personal injuries.
Please observe the safety instructions in chapter 6 "Transport and storage".
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7.
Remove the spring (see element 4, fig. 3).
8.
Remove the axial seal from the cartridge valve
(see element 6, fig. 3).
9.
Only with NG32: Pull the upper part (ring) of the two-part socket out of the
installation bore (see element 5, fig. 3) using a suitable tool.
WARNING
CAUTION
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