Snorkel AB60J - Manual (Page 63)

Chapter 10 – Emergency Operation
AB60J – 0181972 59
Figure 10.6 – Main Boom Emergency
Lowering Knob
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
2. Turn the knob to close the cylinder bleed down
valve.
Towing
The aerial platform may be towed at slow speeds using
the optional tow kit. The tow vehicle must have sufficient
capacity to safely tow and stop itself and the aerial plat-
form on the steepest grade and type of surface that may
be encountered. Refer to Chapter 2 for the approximate
weight of the aerial platform.
Warning
The aerial platform is free to move when the drive
hubs are disabled. Death or serious injury can result.
Securely fasten the tow vehicle to the aerial platform
before disabling the drive hubs.
Use the following procedure to manually disengage the
drive hubs and tow the machine.
1. With the machine in the stowed position, remove
the tow bar from the storage cradles at the rear of
the chassis and lay the tow bar near the front of the
chassis.
Danger
Pinch points may exist between machine compo-
nents. Death or serious injury will result from becom-
ing trapped between components. Do not attach the
tow bar to the tow vehicle until the counterweight is
to the side of the chassis.
2. Rotate the turntable, until the counterweight is to the
side of the chassis, to allow room to attach the tow
bar.
3. Attach the tow bar to the front steering arm with the
tow pin and snap pin.
4. Attach the tow bar to the tow vehicle.
5. Rotate the turntable so the counterweight is back at
the front of the chassis. Raise the platform about 3′
(1 m) above the ground.
6. Shut the engine off and turn the battery disconnect
switch off.
7. Pull the steering float valve knob outward. The valve
is located on the top of the chassis between the steer
wheels.
8. At each drive wheel, remove the two bolts from the
disconnect plate (refer to Figure 10.7). Turn the plate
over so the nipple points inward. Reinstall the two
bolts.
Figure 10.7 – Drive Wheel
9. Do not exceed 10 mph (16 km/h) when towing. Use
caution when traveling around a curve or when turn-
ing a corner. If the tow bar contacts the chassis the
steering mechanism might be damaged or the tow
vehicle and the aerial platform could jackknife.
Warning
The aerial platform is free to move when the drive
hubs are disabled. Death or serious injury can result.
Re-enable the drive hubs before operating the aerial
platform.
10. After towing, push the steering float valve knob in.
11. At each drive wheel, remove the two bolts and return
the plate to its original position as shown in Figure
10.7.
12. Unfasten the tow vehicle from the machine and re-
place the tow bar on the storage cradles.
13. Verify that the drive system operates properly.
Emergency
Lowering Knob
Bolt
Disconnect
Plate