OPERATING INSTRUCTIONS
F106.7/F106.7A/F156.7/F156.7A
Drive The grader is equipped with a drive acting on all four wheels of the rear axle (tandem axle).
All-wheel drive A front-wheel drive can be switched on in addition to the rear-wheel drive.
40001296.00-en
A microprocessor monitors the front-wheel drive and adapts it to the rear-wheel drive. When the front-wheel drive is off, the front wheels turn freely. If the hydraulic pump of the frontwheel drive is defective and therefore no longer driven, the machine must be parked. The machine can then no longer be driven, even if the front-wheel drive is off. Locate and rectify the cause of the malfunction.
Front-wheel drive The front-wheel drive is switched on and off using the button (41, Fig. 6) and only becomes active when a gear is engaged.
Front-wheel drive, speed levels For adapting the front-wheel drive to the working conditions, the speed of the front wheels can be varied in eight levels with respect to the speed of the rear wheels. The speed levels are selected by the rotary switch (84, Fig. 7). Position 0 =
Front and rear wheels have the same speed
Positions 1 to 5 =
Front wheels have higher speed (lead) Front-axle traction force is increased.
Positions -1 and -2 =
Front wheels have lower speed (lag) Front-axle traction force is reduced.
Fig. 6
Activating the front-wheel drive Switch 41 (Fig. 6) Press the pushbutton with the symbol – the symbol lights up Front-wheel drive is active. Deactivating the front-wheel drive Switch 41 (Fig. 6) Press the pushbutton without the symbol – the symbol does not lights up Front-wheel drive is not active. It is possible to switch it on or off in any operating condition. This is done as follows: - When the machine is stationary and in gear - When the travelling speed is less than 2 km/h When the front-wheel drive is on, the powershift transmission cannot be used in 6th gear. When the 6th gear is engaged, the front-wheel drive is not engaged.
Fig. 7
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