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Bosch Rexroth H-4WEH...XE Series Operating Instructions Manual page 32

4/2 and 4/3 directional valves, internally pilot-operated, externally pilot-operated
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32/52
Assembly
Assemble the cable and
line entry at the opposite
side of the terminal box
Bosch Rexroth AG, H-4WEH...XE..., RE 24751-XE-B/04.16
l1 Stripping length of the cable sheath and simultaneously resulting length of the individual
conductor for the connection of the protective earthing conductor
l2 Length of the individual conductors of the voltage supply
l3 Stripping length of the insulation of the individual conductor for the attachment of the wire
end ferrules
l4 Stripping length of the individual conductor for protective equipotential bonding (PE)
(internal)
Table 14: Stripping lengths
Cable and line entry position
Page manual override
Page valve housing
4.
Disassemble the screw-in bushing and the clamping screws of the pull relief.
5.
Ensure the correct seat of the seal insert in the double nipple.
6.
Assemble the screw-in bushing (4) to the connection line and insert it through
the seal insert (3) and the double nipple (2) in the terminal box.
7.
Screw the screw-in bushing (4) to the double nipple (2) and tighten it securely
(hexagon nut, wrench size 22). When tightening the pull relief, the solenoid coil
must be supported in an appropriate manner or held up at the double nipple (2)
using an open-end wrench (wrench size 46). The required tightening torque
depends on the line diameter.
8.
Securely tighten the clamping screws of the pull relief (5). The required tightening
torque depends on the line diameter.
9.
Insert the individual conductors in the connection terminal and screw it on using
the clamping screws.
Tightening torques for the clamping screws:
Table 15: Tightening torques
Operating voltage connection
Connection for protective earthing conductor
Connection for potential equalization
conductor
10.
Assemble the cover with the seal underneath.
Tighten the mounting screws with their spring washers diagonally, one after the
other. Tightening torque of the cover screws: 1...1.1 Nm.
1.
Dismount the solenoid coil (see chapter 7.7.4 "Rotating the solenoid coil by ± 90°").
2.
Remove the plug screw (hexagon, wrench size 22).
3.
Dismount the cable and line entry. To do this, screw out the cable and line entry
at the double nipple (2). Make sure not to lose the O-ring (1) between housing
and double nipple.
4.
Assemble the cable and line entry at the opposite side of the terminal box.
Tightening torque of the double nipple (2): 8...10 Nm
5.
Assemble the plug screw. Tightening torque of the plug screw 7...9 Nm
6.
Assemble the solenoid coil (see chapter 7.7.4 "Rotating the solenoid coil by ± 90°").
length
length
length
l1
l2
l3
[mm]
[mm]
[mm]
≧ 44
24
5 ± 0.5
≧ 84
64
5 ± 0.5
0.4...0.45 Nm
1.0...1.2 Nm
2.0...2.4 Nm
length
l4
[mm]
5.5 ± 0.5
5.5 ± 0.5

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