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MAINTENANCE TIPS
From Frank Requena
Photography By:  Christine C. Huenergardt

Routine servicing and maintenance are the best ways to save a valuable resource on any film or television set. That resource is time. Over the years, we at Chapman/Leonard have accumulated suggestions for making the equipment you use do the job right. Many of these tips come from customers who have had certain situations come up and have gotten back on track in the smoothest and quickest way possible. The following is a compilation of some of these hot field tips.


Above: For dance floor use, the solid rubber tire of the Hustler III should be the outside wheel of each pair.

HUSTLER III TRACK TIRES

The Hustler III is enhanced with built-in track wheels. The wheels are tucked under the chassis. You’ll see a pair of wheels on each axle, one of which has a concave tread for riding on standard dolly track as well as on the ground. The second tire has a flat, rubber tread for operating on solid surfaces.


Above: To configure the Hustler III for track use, rotate the steering column 180 degrees.

For dance floor use, the pneumatic tire should be the outside wheel of each pair, with the track wheel knob located to the inside of the chassis. In this mode, for this type of floor, the Hustler III steers the best and provides maximum stability, while maintaining its narrowest width.


Above: To ensure top performance on track, loosen the large, knurled knob in the center of the wheel, approximately 1/2 inch.

To configure the Hustler III for track use, you must rotate the steering column 180 degrees. Now, the track tire is the outside wheel. In this mode, the concave grooves are spaced perfectly for standard 1.5” gauge track (24.5” center to center). The final modification for optimal performance on curved track is to loosen the large, knurled knob, located in the center of each wheel, approximately 1/2 inch. This gives the wheel linear movement and allows its axle to adjust a few degrees. Both adjustments are important for smooth, silent operation.

To convert back to hard floor configuration, firmly tighten the large, knurled knob. Don’t worry, the anti-lock design will prevent stripping the threads. But don’t use tools for this step. Lastly, rotate the steering column 180 degrees so that the pneumatic tires face the outside.

 

PRIMING THE PUMP ON THE HYBRID OR PeeWee DOLLIES



Above: To get a prime on the PeeWee or Hybrid Dolly; make sure the arm, exhausted of all the charge, is all the way down, then turn the valve control handle in an up position. After this is done, then insert the handle into the foot pump socket and pump (pictured above).

PeeWeeŽ and Hybrid dollies can, at times, lose their prime and won’t respond to manual charging. The usual cause is air entering the hydraulic system. Even an electrically powered dolly is subject to this condition when unplugged. Manually priming the pump solves the problem and can be done on the set.


Above: To get a prime, pump manually. Note: do not pump past the red mark on the gauge.

On the PeeWee models, first boom the arm up and down until all the charge is drained, then lower the arm until it touches the bottom stop. Next, turn the valve control handle to the up position. Lift the handle out and insert it into the foot pump socket on the rear of the chassis. Then have a second person lift the arm approximately 3/4 of its full vertical travel. Use the foot pump until you notice the boom arm begin to rise. Stop pumping. Now is the time to open the bleeder valve located at the top of the cylinder (pictured below). Use a 1/4” box wrench to loosen the bleeder valve. When the air is removed, close the bleeder valve. By hand, rotate the control valve clockwise to the neutral position and then


Above: A box wrench is used to loosen the PeeWee bleeder valve and remove unwanted air in the system.

continue pumping until the pressure gauge indicates a full charge. NOTE: Never pump past the red mark on the gauge. Reinsert the control valve handle into its receptacle and the dolly is ready for operation. For the Hybrid dolly models, repeat the same steps, skipping the bleeder valve procedure, since a bleeder valve on the Hybrid dolly is not required.

This procedure is a quick fix to get the equipment functioning. To avoid the problem, bleed the hydraulic system during routine maintenance. The bleeding procedure has been discussed in volumn 6 Issue 2.

 

FIXING DOLLY ELECTRICAL PROBLEMS


Super PeeWees use a circuit breaker that pops when the current exceeds the limit.

The electrical systems on Chapman / Leonard dollies are protected against shorts by fuse or circuit breakers. Before inspecting the system, disconnect the unit from the power supply. Safety first!

Super PeeWees use a circuit breaker that pops when the current draw exceeds limits. The breaker button is mounted on the left-rear of the chassis (pictured right.)


The Hybrid’s fuse and circuits are located on the top left deck
(pictured above).


The breaker button is normally black. If the breaker trips, the button flips to the white position. Pushing the button back in resets the device. Should the breaker pop again after being reset, the dolly must be serviced by a trained, authorized Chapman / Leonard technician.


Above: The bottom fuse is the spare on the Hybrid dolly.

The Hybrid dolly is protected by a quick-blow fuse. When power fails, use a 5/32” Allen wrench to remove the left access panel. It will reveal 2 tubular fuses mounted in clamps against the chassis wall. The top fuse is wired to the circuitry. The bottom is a spare. Discard the top fuse and replace with the bottom fuse.

Replace the access panel and plug in the power cord. Should the second fuse blow, have the electrical system checked before attempting to use the Hybrid a second time.


The Hustler’s fuse and circuits are located on the top left deck
(pictured above).



Above: The fuse without wiring is the spare on the Hustler dolly. NOTE: Make sure the dolly is not plugged into an outlet before attempting this procedure.

The Hustler Dolly also has two fuses, except they are mounted side by side. The inside fuse is the live fuse. The outside fuse is a spare. Access is through the left panel (pictured below). This requires removing 9 Allen screws (5/32”). If the fuse is blown, replace the inner fuse with the spare. Attach the access panel and then connect the unit to a power source.

Feel free to call our 24 hour service technicians at any one of our locations throughout the United States. The phone numbers are: North Hollywood - 888.883.6559; San Francisco- 510.357.1424; Texas- 888.758.4826; Orlando - 888.337.8243 or Miami - 305.895.0085.

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