Bosch rexroth A4VSO 10 Series - Below-Reservoir Installation (Standard); Inside-Reservoir Installation

Installation 33/72
RE 92050-01-X-B1/2019.08.23, Axial piston variable pump A4VSO, BoschRexrothAG
7.3.1 Below-reservoir installation (standard)
Below-reservoir installation means that theaxial piston unit isinstalled outside
ofthereservoir below theminimum fluid level.
Recommended installation position: 1.
1
2
SB
h
t min
h
min
R(L)
T
S
F
SB
h
t min
h
min
R(L)
T
U
S
F
1)
Fig. 6: Below-reservoir installation with horizontal installation position1 and vertical installation
position2
1) Install bearing flushing, please refer to data sheet (Part II) for minimum flushing flow
R(L) Fluid filling and air bleeding
(drainport)
h
min
Minimum required distance
toreservoir bottom (100mm)
T Fluid drain h
t min
Minimum required immersion depth
(200mm)
S Suction port SB Baffle (baffle plate)
U Flushing port
Table 12: Below-reservoir installation
Installation position Air bleed Filling
1 (drive shaft horizontal) R(L) + F S + R(L)
2 (drive shaft vertically up) T + F S + T
7.3.2 Inside-reservoir installation
Inside-reservoir installation is when the axial piston unit is installed in the tank
below the minimum hydraulic fluid level. The axial piston unit iscompletely below
thehydraulic fluid.
Iftheminimum fluid level isequal toor below theupper edge ofthepump,
seechapter7.3.3 "Above-reservoir installation".
Our advice is to fit a suction pipe to the suction port "S" and to fit a pipe to case
drain port "R(L)" or "T". In this case, the other ports must be plugged, except the
bearing flushing "U" for installation position "drive shaft up". The housing
oftheaxial piston unit must befilled before fitting thepiping and filling
thereservoir with hydraulic fluid.