BA 50Z3/6003 en – Edition 4.3 * 5003b410.fm 4-9
Troubleshooting
4.3 Malfunctions of the Powertilt unit
Problem Possible causes
Powertilt does not maintain its position.
If the machine applies too much pressure against an obstacle, this can build
up pressure in the Powertilt swivel device that activates the internal decom-
pression valve.
Oil escapes from the control valve.
Malfunctioning decompression valve.
Oil escapes from the seals.
Powertilt turns only in one direction.
A one-way valve has been installed.
Malfunctioning internal decompression valve.
Both lines are connected to either the P1 or P2 ports of the Powertilt swivel
device.
Inexact lateral Powertilt movements.
Air in Powertilt swivel device or hydraulic system.
Hose/pipe diameter/length is larger/longer than recommended.
Reverse and forward movement of shaft in housing (axial
play of shaft).
Worn or missing pressure discs.
Lateral bucket movement. A little play due to necessary spacing between teeth is normal.
Grease cannot be applied to Powertilt grease nipples.
Malfunctioning grease decompression valve of lubrication system, or grease
decompression valve has been replaced by a grease nipple or plug.
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