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Maintenance
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02.00 | FDB-AC | Assembly and Operating Manual | en | 389513
6.2 Recommended Inspection and Cleaning Procedure
Position of the position numbers
User Serviceable parts FDB-AC 90
User Serviceable parts FDB-AC 180
Ø
Remove the Lock Ring (3) from the FDB-AC Motor Housing (7)
using the hook spanner wrench (not shown).
Ø
Gently pull the Cylinder (5) and Compensation piston (4)
assembly from the FDB-AC Motor Housing.
Ø
Thoroughly clean the Male Spline, the interior of the Motor
Housing, and the Lock Ring with a mild solvent.
Ø
Spin the burr by holding the Compensation piston and assure it
spins freely. If it does not spin freely, replace the Compensation
piston.
Ø
Separate the Compensation piston from the Cylinder and clean
thoroughly.
Ø
Inspect the Compensation piston and Cylinder for scratches.
Deep scratches may require replacement of the part(s).
Ø
Check the Burr (I6) condition and replace as necessary.
Ø
Lightly lubricate the outside diameter of the Compensation
pistonn and the inside diameter of the Cylinder with the same
oil used for operational air lubrication.
Ø
Assemble the Compensation piston in the Cylinder and assure
the Piston moves freely without excessive play. The fit between
the Compensation piston and the Cylinder provides the seal for
the axial down force air pressure, therefore the fit must be
consistent and without excessive play. If the play is excessive,
replace the Cylinder.
Ø
Install the Cylinder and the Compensation piston assembly on
the Motor Housing.
Ø
Replace the Lock Ring.
IMPORTANT! Do not over tighten the
Lock Ring.
Ø
Assure the axial down force and the drive are working properly