Auxiliary Drive Brake - SNT SPIDER AUTONOMOUS 2.0 Operation Manual

12.27 AUXILIARY DRIVE BRAKE

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The machine is equipped with an auxiliary drive brake, which brakes the wheels
in situations, when the pressure in the hydraulic circuit drops (engine shut
down, air in the hydraulic circuit, result of using the EMERGENCY STOP but-
tons). The auxiliary drive brake works on the principle of a band brake, where
the braking band brakes the pulley of the hydraulic motor and consequently
also the wheels. The brake is controlled by a brake cylinder, which is con-
nected to the filling circuit of the hydraulic pump. The braking effect will take
place when the pressure in the hydraulic system drops. When the pressure in
hydraulic system increases, the brake will be disengaged.
The brake includes a system, which allows the brake to be manually disengaged.
If used together with the hydraulic by-pass, the machine can be moved without
using its own drive (pushed, towed away). This system of moving may be used
only when the hydraulic drive is not functional and the machine cannot use its
own drive.
For manual manipulation with the machine secure the brake lever by the
secure pin.
For normal operation if it absolutely necessary that the hydraulic by-pass
bolt on the hydraulic pump is tightened and the secure pin of the auxiliary
brake released (see figure).
Before operation, make sure that the hydraulic pump
by-pass bolt is tightened and the secure pin of the
auxiliary drive brake released.
Incorrect release of the auxiliary drive brake secure pin
may lead to undesirable behavior of the machine
on slopes, the machine may uncontrollable drive down
the slope Daily check the brake lining.
If the lining gets thinner than 1 mm, replace it
immediately. Have the brake adjusted by an authorized
service/dealer (every 200 operating hours).
The auxiliary drive brake is designed only to brake the
wheels during the drop of pressure in the hydraulic
circuit and may not be used for securing the machine
and parking on slopes.
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brake lever
secure pin