2019 29 D4OPTRS
DOWN PRESSURE ADJUSTMENT
Always place broom on a smooth surface when making adjustments. The hydraulically
operated gutter broom is spring suspended to help counter the hydraulic cylinder force for
proper down pressure (depending on the bristle type) the cartridge sequence valve must
be properly adjusted. Using a 3/16 Allen wrench, set the adjustment screw on the top of the
valve as follows - suggested settings:
• Steel Vertical Digger Bristles - 2-1/2 turns in on sequence valve, 1 turn in on fl ow control
valve
• Poly Wafer and Poly Digger Bristles - 2 turns in on sequence valve, 1 turn in on fl ow
control valve
Once adjusted, no further sequence valve setting should be required unless the bristle type
is changed.
BRISTLE WEAR ADJUSTMENT
The most frequent adjustments made on the gutter broom will be spring tension and angle.
Operating the gutter broom with a minimum of bristle wear is encouraged and, by keeping
proper spring tension, the bristles will have a much longer life.
Do not adjust the cartridge valve to raise or lower the broom. The gutter broom spring
counteracts the hydraulic cylinder force. With the gutter broom turned off and in the down
position, the spring should be adjusted to hold the broom from 1 to 2 inches (25.4 to 50.8
mm) off the ground without the help of hydraulics. As the bristles wear, the broom should
be lowered with spring adjustment to compensate for the shorter bristles. Simply loosen the
nut on the eye bolt. The steel gutter broom bristles are replaced when the wire becomes
approximately four inches long. When replacing broom with new fi ller, the spring must be
tightened so that the tips of the bristles are 1 to 2 inches (25.4 to 50.8 mm) off the ground
with no hydraulic pressure as mentioned.
!
Attention: Adjusting the sequence valve adjustment screw too far into the
valve will make the broom too rigid and may result in damage to
the broom components!
(M00762)
(M00218)
ANGLE ADJUSTMENT
The Gutter Broom utilizes a unique ball
and socket design for gutter broom bristle
tilt adjustment. A single nut (found behind
the gutter broom torque motor) is used to
lock the moveable socket to the boom arm
ball. To adjust bristles, lower the gutter
broom to the pavement and turn broom off.
Make sure the spring tension is adjusted
correctly. If the bristles still need adjusting,
use a 1-7/8" open wrench to loosen the nut
behind the torque motor. Due to the ball and
socket design, the bristle setting can now
be set to virtually any pattern regardless of
bristle length. Hold the bristle setting and
re-tighten the 1-7/8" nut behind the torque
motor. When adjusting bristle tilt, adjustment
to spring tension may be necessary also.
To Next Page
Loading...