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Installation
Bosch Rexroth AG, A4CSG, Series 3x, RE 92105-01-B/06.2017
▶
Make sure that a minimum suction pressure of 0.8 bar absolute is present at
port S during operation and after a cold start for all installation positions and
installation locations of the axial piston pump; see Fig. 7. See data sheet 92105
for other pressure values.
1 2
0
3
1
Fig. 7: Boost pump suction pressure
1 Absolute pressure gauge
2 Standard pressure gauge (relative)
The suction conditions improve with below-reservoir installation.
▶
Make sure that the working environment at the installation site is completely
free of dust and foreign substances. The axial piston unit must be installed in
clean condition. Contamination of the hydraulic fluid can considerably affect the
function and service life of the axial piston unit.
▶
Use fiber-free cloths for cleaning.
▶
Use suitable mild cleaning agents to remove lubricants and other difficult-to-
remove contamination. Cleaning agents must not enter the hydraulic system.
7.3 Installation position
The following installation positions are permissible. The pipeline routing shown
illustrates the basic layout.
Before installation, fill the pump housing in a horizontal position. Port T to the
reservoir plugged. Filling options when installed with shaft end upward: Fill via
R(l) and air bleed T, then plug port R(l).
With installation positions 3 and 4, 8 and 9, it is to be expected that the control
or regulation is influenced. Due to gravity, dead weight and case pressure, minor
characteristic shifts and actuating time changes may occur.
7.3.1 Below-reservoir installation (standard)
Below-reservoir installation means that the axial piston unit is installed outside of
the reservoir and below the minimum fluid level of the reservoir.
0
1
-1
2
2
S
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