Service manual

2023 Service Manual V1.0
8
8-2
BRUSH LIFT SYSTEM
DOWN PRESSURE
Down pressure is controlled manually by the operator raising or lowering the deck. The
amount of down pressure is monitored using the brush pressure gauge located on the
lower right corner of the control panel. This gauge should always be in the green when
operating. If the gauge goes into the red there is too much brush pressure being applied.
STANDARD MODEL
HD MODEL
BRUSH LIFT SYSTEM ADJUSTMENTS
The brush lift system has two adjustments that can be made to it. The first adjustment is
the length of travel of the actuator ram. This controls how far down it will allow the brush
deck to go. The second adjustment is the upper linkage adjustment that controls how high
the brush deck will lift off the floor .
To access the actuator and its linkage the body of the machine must be tipped back. To
do this you must first drain the solution and recovery tanks completely. Then use the Allen
wrench located on the side of the scrub deck to remove the body hold down bolts. Once
the body hold down bolts have been removed you can then use the handle bars to tip it
backwards and rest it on the floor. After the adjustments have been made, tip up the body,
replace body bolts and tighten, stow the body wrench and test the machine.
BRUSH LIFT ACTUATOR
The actuator must be able to extend enough to lower the brush head down so that it can
reach slight dips in the floor. If the head can not do this the actuator may not be extending
enough. The distance the actuator extends is controlled by a limit switch that is housed
internally in the actuator.