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Commissioning 39/56
RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41,
Bosch Rexroth AG
8.1.1 Filling the radial piston motor
CAUTIOn
Risk of impaired brake performance!
For braked motors ensure that the fluid does not contain any friction modifying
additives (e.g. anti-stick slip additives), as they may cause a significant reduction in
brake torque.
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When using fluids other than mineral oil, brake torque needs to be checked on a
case-by-case basis.
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Ensure that the correct additive is present where specified on installation
drawing (dynamic disc brake). This is necessary to prevent brake noise.
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The drum and caliper disc brake can be configured to operate with either
mineral oil or brake fluid. Ensure the correct seals have been specified for the
intended fluid otherwise damage and leakage will occur.
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If in doubt please contact Bosch Rexroth RM Engineering Department in
Glenrothes (contact details see chapter 10.5 "Spare parts" on page 47).
Professional filling and air bleeding is necessary to prevent damage to the radial
piston motor and to maintain correct function.
Take care to avoid contamination while filling the radial piston motor. The radial
piston motor must not be operated while it is being filled.
Use an approved hydraulic fluid.
The machine or system manufacturer can provide precise details of the hydraulic
fluid. Details of minimum requirements for mineral-oil based hydraulic fluids,
environmentally acceptable hydraulic fluids or HF hydraulic fluids for the radial
piston motor are contained in the related Rexroth documents listed in Table 1
"Required and supplementary documentation" on page 5.
To ensure the functional reliability of the radial piston motor, cleanliness level
20/18/15 according to ISO 4406 is necessary for the hydraulic fluid.
For permissible temperatures, see the data sheet.
1.
Place a drip tray under the radial piston motor to collect any hydraulic fluid that
may escape.
nOTICE!
Contaminated hydraulic fluid!
The cleanliness levels of hydraulic fluids on delivery do not normally conform to the
requirements for our components.
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Use a suitable filter system to filter hydraulic fluids during filling to minimize
the
risk of contamination
and water in the hydraulic system.
2.
Fill the radial piston motor via the filler port
F
. See section 7.3 "Installation
position" on page 29. Motors fitted with internal flushing will automatically fill
at initial operation. The hydraulic lines of the system must also be filled.