10.1.17. Possible malfunctions of a screen wiper and ways of their elimination
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Possible malfunctions of a screen wiper and ways of their elimination
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Cause of defect
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Way of elimination
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At inclusion the screen wiper does not work
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There is no contact in connecting blocks
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To check reliability of connections and to eliminate malfunction
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The switch does not work
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To check and repair it
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Lag of brushes or pollution by electric motor anchor collector dust
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To disassemble the electric motor, to eliminate lag of brushes. To smooth out a collector and to clear grooves between collector plates
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The safety lock owing to jamming of levers of the drive, jamming in a reducer or malfunction of the electric motor fused
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To find a cause of defect, to eliminate it and to replace a safety lock
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Wear of a worm gear wheel of a reducer
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To replace a worn-out gear wheel
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In operating time of a brush strike in body details
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Levers are incorrectly installed
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To change installation of levers
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The wrong provision of brushes after switching off of a screen wiper
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Levers are incorrectly installed
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To install levers of brushes (see <maintenance of a screen wiper>)
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The screen wiper works only at one speed
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Lag of a brush of the electric motor or malfunction of the switch
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To eliminate lag of a brush, to check the switch and if necessary to repair
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