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11. EXPLANATION
OF COMPONENTS
11.5.4 LEFT PEDAL SECONDARY
BRAKE
The left brake pedal applies the machine brake without decelerating the engine.
This pedal actuates a brake valve mounted behind the dash. With the engine
running and the pedal in the up position, pressure is directed to a spring extended
cylinder mounted in the rear main fame. The pressure retracts the cylinder and
releases the brakes. When the pedal is depressed, pressure is decreased in
relation to pedal position. The decrease in pressure allows the cylinder to apply
a force to the brake equalizer bar which applies the brakes. When the engine is
shut down or if hydraulic transmission failure occurs, the brake will fully apply after
the pedal is depressed. Once the brake pressure has been dumped the brake will
stay applied until the engine is started. If the engine is not runnable a remote
source of pressure must be applied to the tow port to release the brakes. See 16.4
METHODS OF TOWING MACHINE.
11.5.5 BRAKE AND DECELERATOR
PEDAL
/
A
WARN'NG
I
Do not put your foot on this pedal unnecessarily.
This pedal 0 overrides
the engine speed control
lever setting.
Partial
depression of the pedal decreases engine speed for smoother changes in
machine direction and to ease the machine up to a load. Release the pedal
to accelerate to the engine speed control lever setting. This pedal stops the
machine when fully depressed. It also serves as a parking brake when the
brake pedal lock is applied.
11.5.6 BRAKE PEDAL LOCK
A
WARNING
Whenever the machine is parked, always lock the brake pedal.
I
This lock 0 secures the right brake pedal in the applied position for parking
the machine. To lock the pedal, fully depress the pedal, push down on the
lock and remove your foot from the pedal. To release the brake, depress the
pedal.
REMARK
Release the lock before moving the machine. The brakes could burn or be
damaged if the machine is driven with them applied.
11.5.7 BLADE CONTROL LEVER
This lever controls all operation of the blade; blade
raise, lower and float; right or left tilt and right and
left angle.
REMARK
Holding the lever in any position except HOLD or
FLOAT for an extended period of time after the
hydraulic cylinder rod has reached the limit of its
travel will produce excessive heat in the hydraulic
system which may affect equipment performance.
2-15
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