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500 Series Operating instructions
Drive control
Avoid collisions - Practice the use of the loader at a safe area. Familiarize yourself
with the driving of the machine on low speed and on a at, even and open place where
unintended movements will not cause collisions or danger to yourself or others. When
you have learned how to drive on low speed, increase speed gradually and learn how
to drive with higher drive speeds. Make sure that there are no persons in the operating
area of the machine.
Principle of operation
AVANT 520/528 is equipped with a hydrostatic drive system, a variable displacement
hydraulic pump in the drive circuit is proportionally controlled with the two drive pedals.
Driving of the machine is controlled with the drive pedals and hand throttle.
• Select the engine speed with the hand throttle lever on the control panel
• Control desired driving direction and speed with the drive pedals
• To get the maximum pushing power push the pedals lightly – for higher travel speed
push the pedal harder
Risk of loss of control and tipping over of the loader - Reduce
speed before sharp turns and when driving on uneven
terrain. Abrupt control movements can tip the loader over.
Do not turn the steering wheel quickly when you drive at high
travel speed. Drive slowly whenever carrying loads, driving on
inclined or rough terrain, or on slippery surfaces. Always reduce
speed before sharp turns.
Drive control
• Driving forward: press gently on the right drive pedal until the machine starts to move
slowly.
• To drive backward: press gently on the left drive pedal.
• When you wish to stop gently release the pedal by lifting of your foot, and the machine
will slow and stop.
The basic rule is: use lower revs for lighter work and higher revs for hard work or for
high travel speed.
The hand throttle can be used to control engine speed also while driving.
The hand throttle also has an effect on the operation speed of a
hydraulically driven attachment: the more throttle the faster the
attachment operates. Make sure not to exceed max. allowed oil
ow of the attachment.
When you want to have a high pulling force:
1. Use high engine RPM
2. Press the drive pedal only lightly to select a relatively slow drive speed. This way the
full output of the hydraulic system and the engine can be taken out. If the engine is
overloaded while pushing, the pedal shouldn’t be pressed further, but instead use
higher engine RPM and push pedal only a little.
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