Vinten HDT Heavy-Duty, Operator'S Manual

Page: 19 / 28

19
Studio and OB dollies
Assembling the dolly
Turn the dolly upside-down, depress the leg locking plungers and pull each folding leg out until
the plungers lock the legs in the open position.
Set the dolly on the ground on its wheels and apply the wheel brakes.
Brakes
Each of the dolly wheels is fitted with a foot operated brake (21) . The brakes are applied by press-
ing down on the lever situated above the wheel and released by pressing down on the centre
`pop-up' lever
(21.1) which is raised when the brake is on.
Cable guards - studio version only
The cable guards (20) are height adjustable and should be set as required. Adjustment is carried
out by slackening the knobs (20.1) , setting the cable guard at the required height and re-tightening
the knobs.
Dolly movement - studio version only
The wheels on the dolly can be locked in the straight-ahead position or set to castor freely. The
castor/lock changeover is effected by spring-loaded track lock pins
(19) on each wheel assembly.
The pins on the folding legs have black knobs and the pin on the fixed leg a red knob. To engage
or disengage a pin, pull it up against the spring and turn through 90°. The pin will only engage with
the wheel when the wheel is properly aligned. This arrangement provides castor, track and steer
motion.
Castor motion
For castor motion, disengage all three track locks. The dolly can now be moved freely in any di-
rection.
Tracking motion
For tracking motion, engage all three track locks. The dolly can now track backwards and forwards
in a straight line.
Steer motion
For steer motion:
Position the dolly so that the fixed leg (with the red knob) is in the direction of travel. Disen-
gage the red track lock.
Engage the black track locks.
With the fixed leg of the dolly facing forwards the dolly can now be moved with a `steer-
ing-type' motion.