40/56 Commissioning
Bosch Rexroth AG, A22VG Series 40, RE 93221-01-B/07.2013
Continuous suction or pressure filtration must be provided by the customer for
the boost pressure fluid fed in at portG (or G
1
on the version with DA control
valve).
At very high hydraulic fluid temperatures (+90 °C to maximum +115 °C), a
cleanliness level of at least 19/17/14 according to ISO 4406 is necessary. For
permissible temperatures, see the data sheet 93221.
1. Place a drip tray under the axial piston unit to collect any hydraulic fluid that may
escape.
NOTE! 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 26. The hydraulic lines of the system must also
be filled.
NOTE! Damage to equipment due to improper lubrication!
Product can be damaged or destroyed!
▶ When using a shut-off valve in the suction and/or reservoir line, make sure that
the input 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 reservoir line, only operate the
axial piston unit when the shut-off valves are open.
4. Test the direction of rotation of the diesel engine. To do this, rotate the diesel
engine 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 chapter5.3 “Product identification”, Fig. 3:Name plate A22VG on page
19.
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 air bled. To inspect, drain the hydraulic fluid at the
reservoir port and wait until it drains without bubbles.
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