Bosch A4VG A4VG 32 Series User Manual

Commissioning 49/68
RE 92003-01-B/12.2015, A4VG Series 32, Bosch Rexroth AG
8.1.1 Filling the axial piston unit
Professional filling and air bleeding is necessary to prevent damage to the axial
piston unit and to maintain correct function.
The axial piston unit should be filled with a filling unit (10 µmfilter grade). The
axial piston unit must not be operated while it is being filled by the filling unit.
Use only a hydraulic fluid that conforms to the following requirements:
You can find details of the minimum requirements on hydraulic fluids in
BoschRexroth data sheets 90220, 90221, 90222 or 90223. The titles of the data
sheet can be found in Table 1 “Required and supplementary documentation”
on page5. You can find details of permissible and optimal viscosity in
data sheet 92003.
To ensure the functional reliability of the axial piston unit, at least a cleanliness level
of 20/18/15 according ISO 4406 is necessary for the hydraulic fluid. At very high
hydraulic fluid temperatures (+90 °C to maximum +110 °C, measured at portT),
at least a cleanliness level of 19/17/14 according to ISO 4406 is necessary. For
permissible temperatures, see data sheet 92003.
1. Place a collecting pan under the axial piston unit to collect any hydraulic fluid
that may leak.
NOTICE Contaminated hydraulic fluid.
The cleanliness levels of hydraulic fluids on delivery do not normally conform to the
requirements for our components.
▶ Use a suitable filter system to filter hydraulic fluids during filling to minimize solid
impurities and water in the hydraulic system.
2. Fill and air bleed the axial piston unit via the appropriate ports, see Chapter7.3
“Installation position” on page34. The hydraulic lines of the system must also
be filled.
NOTICE! Risk of property damage due to improper lubrication.
Product can be damaged or destroyed.
▶ When using a shut-off valve in the suction and/or drain line, make sure that the
drive of the axial piston unit can only be started when the shut-off valves are open.
3. When using a shut-off valve in the suction and/or drain line, only operate the axial
piston unit when the shut-off valves are open.
4. Test the direction of rotation of the drive motor. To do this, rotate the drive motor
briefly at the lowest rotational speed (inching). Make sure that the direction of
rotation of the axial piston unit agrees with the details of the name plate, see
chapter5.4 “Product identification”, Fig. 6:Name plate A4VG On page27.
5. Operate the axial piston pump at a lower speed (starter speed for internal
combustion engines or inching operation for electric motors) until the hydraulic
system is completely filled and bled. To inspect, drain the hydraulic fluid at the
drain port and wait until it drains without bubbles.

Bosch A4VG A4VG 32 Series Specifications

General

Brand	Bosch
Model	A4VG A4VG 32 Series
Category	Water Pump
Language	English