24 BT 130
5. Auger Brake
5.1 Checking the Auger
Brake
The auger brake is one of the most
important safety devices on the
earth auger. Its efficiency is
measured in terms of the braking
time, i.e. the time that elapses
between activating the brake and
the auger coming to a complete
standstill.
Contamination and smoothing of
the friction surfaces of the brake
band and clutch drum impair the
coefficient of friction, which
prolongs the braking time. A
fatigued or stretched brake spring
has the same negative effect.
– Start the engine.
– With the auger brake
activated (locked), open the
throttle wide for a brief period
(max. 3 seconds) – the auger
must not rotate.
– With the auger brake
disengaged, open the throttle
wide and activate the brake
manually – the auger must come
to an abrupt stop.
The braking time is in order if
deceleration of the auger is
imperceptible to the eye (a fraction
of a second).
If the auger brake does not operate
properly, refer to troubleshooting,
b 3.2
5.2 Brake Band
– Troubleshooting, b 3.2
– Remove the clutch housing with
gearbox and the clutch drum,
b 4.1
: Take out the screw (1) and
remove the covers (2, 3).
– Engage the auger brake
– this relieves the brake spring.
: Take out the screw (1), push out
the insert (2) and pry the brake
band (3) out if its seat (arrow).
Do not overstretch the brake band.
– Disengage the auger brake.
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3
: Turn the brake band (1) to one
side and disconnect it from the
brake lever (2).
Install a new brake band if there are
noticeable signs of wear (large
areas on inside diameter and/or
parts of outside diameter – arrows)
and its remaining thickness is less
than 0.6 mm.
– Inspect brake lever and spring,
replace if necessary, b 5.3
Installing
The auger brake must be
disengaged.
: Hold the brake band (1)
sideways, attach it to the brake
lever (2) and then swing it in the
direction of its seat.
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