Assembly 25/44
RE25802-XC-B/07.19, DB...5X/...XC
Bosch Rexroth AG
NOTICE
Wear, tear and malfunctions!
The cleanliness of the hydraulic fluid has a considerable impact on the cleanliness
and life cycle of the valve. Any contamination of the hydraulic fluid will result
in wear and malfunctions. Particularly foreign particles may damage the valve.
▶
Ensure cleanliness.
▶
Install the valve in clean condition.
▶
Make sure that all connections, hydraulic lines and attachment parts are clean.
▶
Ensure that no cleaning agents are able to penetrate the hydraulic system.
▶
Only use seal kits as listed in chapter 10.6 "Spare parts".
7.7.1 Assembly of valves for subplate mounting
1.
Before any assembly and disassembly work starts, the environment must
be cleaned so that no dirt can get into the oil circuit. Only fiber-free cloth
or special paper may be used for cleaning.
2.
Remove existing preservative agent.
3.
Check the valve contact surface for the required surface quality
(see
"Data sheet 25802-XC"
). Remove the protective plate from the valve and keep
it safe for returns in case any repairs become necessary later.
4.
Dry the valve connection surface using suitable cleaning materials.
5.
Check the seal rings at the valve connection surface for completeness.
Other sealants are not admissible.
CAUTION!
Faulty assembly! Swapping the ports may cause damage to the valve
in case of pressurization!
▶
Check whether with version Y (optional), the return line is connected to Y.
If subplates according to "
Data sheet 45100"
are used, correctness of the ports
with regard to P, T and X has to be ensured. The measuring port in X may only
be used for pressure measurements.
6.
Place the valve on the contact surface.
For reasons of stability only use the valve mounting screws listed
in
"Data sheet 25802-XC"
!
Always fasten the valve with all 4 valve mounting screws as otherwise,
leak-tightness is not guaranteed.
7.
When using the subplates mentioned under 7.6 "Required accessories" or in case
of assembly on comparable cast iron installation surfaces, tighten all four valve
mounting screws using a torque power screwdriver. The tightening torque refers
to the maximum admissible operating pressure.
8.
For variants with external pilot oil discharge
(Y)
, observe the information
in chapter 7.7.2 "Assembly of valves with threaded connection".
