SD Series
Operating & Safety Instructions
USA 10/12
33
4.7.2
TOWING –
Gearbox Drive motors with integral hydrostatic brakes
.
Towing the Niftylift in case of an emergency.
1)
If parked on a slope securely chock all wheels.
2)
Open the door to access the ground controls. Locate brake release valve (see photo) and turn
anti-clockwise. The rear wheel motors are now free of the hydraulic circuit.
3)
Move the brake override lever (adjacent to the ground controls), to the horizontal position. Fit
the manual hand pump handle and give the hand pump several pumps until pressure is felt to
build. A visual check of the brake telltale (Located next to the Drive Control Valve) will indicate
when the brakes are released. When the indicator knob comes out of the block, the brakes are
‘Off’.
4)
The Niftylift can now be towed over short distances - maximum speed 5mph.
REMEMBER TO VENT THE BRAKE PRESSURE AND RETURN HAND VALVE
TO ORIGINAL POSITION BEFORE OPERATING THE NIFTYLIFT.
FAILURE TO DO SO WILL LEAVE THE MACHINE WITH NO
HYDROSTATIC OR PARKING BRAKES AND NO DRIVE POWER.
5)
To re-set the brakes, move the brake override lever back to the normal ‘up-right’ position. The
telltale indicator will return flush into the block. It might be necessary to cycle the lever more
than once to re-set the brakes.
6)
In order to drive the machine once more, the brake release valve will need to be closed, by
turning clockwise. The wheel motors are now re-connected to the hydraulic circuit.
7)
If the brake override lever is not re-set manually, the next time the machine is moved
hydraulically, the brakes will automatically re-set themselves. The brake override lever will
however be in the wrong position for emergency operation of the booms, and should be
returned to the normal ‘up-right’ position as soon as possible.
