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Grounding
Your trailer is equipped with a bronze grounding lug. When the trailer is used near energized conductors the trailer must
be grounded. A grounding lug is provided to help you follow your company’s safety practices.
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Outriggers
Stability is an important part of safe trailer use. Because the towing vehicle can provide additional stability, leave it con-
nected to the trailer when you can. Set the rear outriggers to their lowest level. If you need to decouple the towing
vehicle, lower the front jack slightly, set the outriggers and then raise the jack to seat the outriggers firmly in the ground.
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Wheel Chocks
Set the chocks at each rear wheel in the direction of the expected load or grade.
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Do not modify your trailer
Your trailer is a custom engineered piece of equipment. Essential safety items can be damaged by altering your trailer. The
simplest modifications, such as driving a screw or punching a hole to install a hanger can inadvertently damage an electrical wire
or other hidden component. Before making any alteration to your trailer, contact Sauber Mfg. Co. at (800) 323-9147.
Underground Pull Preparation
Prior to beginning the job, estimate the amount of pull that will be required to ensure that up to 3000 lbs of tension will be
adequate throughout the entire pull. Sauber Mfg. Co. can assist in modeling the pull and providing a range of pull required. Due
to the difficulty in estimating coefficients of friction, past experience is sometimes the best method to determine what a particular
job will require. We recommend you maintain a log detailing pull variables and required pulling power to refer to as a guide. If
your anticipated line pull does exceed 3000 lbs, do not attempt to start the pull - contact the factory.
Remove the underground sheave assembly from it's stored position and insert it into its rear receiver tube. The sheave
insert tube should be fully seated in its lowest position. An available A-frame can also be attached in the mounting holes
provided at the rear of the trailer. The bronze sheave is detachable via quick pin to allow the assembly to be removed without
disturbing the rope path if necessary. Set the trailer outriggers and chocks as described above and engage the over center trail-
er brake actuator located at the right side of the trailer. Due to the nature of underground pulling, we recommend that the unit be
operated in low speed mode throughout the duration of the pull.
Overhead Pull Preparation
Prior to beginning the pull, be sure that you have computed the amount of tension that will be required based on the dis-
tance between the poles, the weight of the wire, the wire sag, and the number of poles. Sauber Mfg. Co. can provide a spread-
sheet file that will compute this information quickly in the event you do not have ready access to it. The formula to compute
overhead line tension and necessary pulling power follows. Your puller will develop up to 3000 lbs of line pull, which is more
than enough for distribution line construction. If your calculated line pull does exceed 3000 lbs, do not attempt to start the pull -
contact the factory.
Operation & Maintenance Manual
Model 1570-B Puller
09/2010
Page 5
