Question about Braun KSM2-WH Electric Grinder
I have a problem with the switch. The motor stopped in mid-grind. I dismantled. There are two springy contacts. One makes contact when the switch slider "wedge" pushes it. The other doesn't seem to be connected to anything. An ohm meters shows that both contacts have to be made before the motor draws current.
1) What is the purpose of the second spring contact - opposite the one driven by the switch? Should it be hooked behind the terminal so that it makes permanent contact?
2) How should the small, transparent plastic wedge be ortiented? If shifts when I screw the unit back together..
It is good to repair the switch but it is best to have it
replaced. You may be able to repair it but the problem
will probably recur. However, you are in the best position to resolve the solution either to repair or replace the switch.
Posted on Oct 04, 2009
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Posted on Jan 02, 2017
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Dead...? Sticky solenoid due to corrosion or glued up lubricant
and dirt ? dismantle and rub clean with some
emery paper. Worn starter motor armature brushes ? strike motor body with end of a piece
of timber whilst cranking; the jolt may encourage enough contact to get the starter
motor running for long enough for ignition to occur. ? For a permanent fix dismantle the
starter motor and replace the carbon brushes. Corrosion in the starter motor body between the
steel jacket and aluminium gear casting.? insert self tapping screw between the
two parts to bridge the corrosion? For a permanent fix remove motor and
strip down and wire brush components back to the metal and then reassemble.
Click, click, click ...occasional start Worn contact plates in solenoid failing to
provide high current to energize the starter motor windings? dismantle solenoid and replace copper
contact plates and plunger ring (readily available as an inexpensive overhaul
Wahr, wahr, warh...laboured motor Worn bronze bearings on the ends of the starter
motor are allowing the armature to run off centre and grind against the
surrounding field magnets on the inside of the motor body? dismantle motor and replace the bronze
bearings (inexpensive fix). Over-drawing motor - high current is drawn but
this is not translated into effective turning effort by the motor. The field magnet windings have begun to
short out, probably as a result of age or through over use in constantly
trying to start a poorly igniting engine ? replace/ exchange the starter motor as
the field windings of the stator magnets on the motor body are fried and beyond
repair. Wheeeeeeee ..no start Although engaged fully with the flywheel a
slipping pinion gear clutch means that the motor is ineffectual at turning
the engine over ? remove the starter motor and replace
the pinion gear on the end of the starter motor shaft
Lottery start...occasional no start
- replace/ exchange the starter motor as
armature windings are beyond repair.
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