Test Devices, Assembly Tools And Note On Commissioning; Decommissioning - Bosch rexroth SYDFED 2X Series Manual

Pressure transducer
HM20-X
Test box for SYDFED
Mounting tool for swivel
angle transducer VT-
SWA-1 (Hall sensor) for
SYDFED-2X
Decommissioning | SYDFED-2X, SYDFED-3X, SYHDFED-1X
Fig. 34: Mounting bores: left-hand side (round) for NG 18, 28, 25; right-hand side (rectangular)
for NG 71, 100, 140, 180
When mounting a new pre-load valve, take care that the seal on the pump side of
the pre-load valve is positioned in the recess provided for this purpose. Tighten
the mounting screws to the following torque:
Sizes 18, 28 and 45:
Size 71:
Sizes 100, 140 and 180:
After having mounted the pre-load valve, connect the high pressure and case drain
oil pipes as described in chapter 7.3 "Installation positions and piping of SY(H)
DFED systems" on page 43. During re-commissioning, bleed the pre-load valve.
Notes on the bleeding procedure can be found in chapter 8.1.7 "Bleeding the pre-
load valve" on page 65.
Disconnect the electrical connection on the pilot valve. Replace the pressure
transducer by turning out the existing pressure transducer and screwing in a new
one. Tighten the pressure transducer to a torque of max. 20 - 25 Nm.

10.5.2 Test devices, assembly tools and note on commissioning

We offer a hand-held control box, designation "VT-PDFE-1-1X/V0/V0" (Mat. no.
R900757051) for control systems SY(H)DFEE, SY(H)DFEC, SY(H)DFEn and SY(H)
DFED for looping in into the existing cabling.
The hand-held control box requires a 24 V voltage supply from the customer side
for the internal reference voltage and is equipped with:
• Command value potentiometer for swivel angle and pressure (analog inputs)
• Measuring points for all connection pins
• Additional supply option for a pressure transducer
The following fitting tool is available for the magnet carrier:
• For mounting: Plastic sleeve Mat. no. R900846331

11 Decommissioning

The SY(H)DFED control system is a component that does not require
decommissioning. For this reason, this chapter of the present instructions does
not contain any information.
For details about how to demount or replace your SY(H)DFED control system,
please refer to the following chapter 12 "Demounting and replacement".
Mounting screws
45 Nm
55 Nm
100 Nm
RE 30017-B, Edition 11.2021, Bosch Rexroth AG
77/96