WARNING: Crush Hazard Between Front
And Rear Halves Of Machine. Engage
PIVOT LOCK PIN IN USE
A. Machine Trailer Section
B. Machine Tractor Section
C. Pivot Lock Pin
Figure 13-14.--Pinch area and pivot lock pin.
brush lever is a three-position lever (ON, OFF, and
The front disc brake assembly provides the service
REVERSE) that controls the spin of the brushes. The
brake and the parking brake on the same disc. The
scrub head position lever is a lever that controls the
master cylinder is a nonpowered type, and the parking
position of the scrubbers (RAISE, HOLD, and
brake is operated by a cable from the drivers seat.
LOWER). The SRS panel is a control box (control
panel) and solution lever that controls the application of
the cleaning solution.
The flight deck scrubber uses two rotating scrub
A diesel engine drives the flight deck scrubber's
brushes to clean the deck. There are two types of
hydraulic system. Components of the hydraulic system
brushes available; one is made of polypropylene, and
include the two hydraulic motors for the scrub brushes,
the other is an abrasive bristle. Both types of brushes
the cylinder for the scrub head lift, the cylinder for the
are 50 inches long and have a diameter of 11 inches (fig.
rear squeegee lift, and the steering cylinder. The
complete hydraulic system, including the hydraulic
reservoir, requires 13.8 gallons of hydraulic fluid.
The area between the front and rear halves of
the flight deck scrubber is known as a pinch area
because the halves come together during a turn.
(See fig. 13-14.) During maintenance activities,
the articulated joint can be locked with a pin to
keep the halves from accidentally coming
together. The pivot locking pin is hung on the
tractor section of the flight deck scrubber, adjacent
to the pivot point. The pin should be inserted prior
to working in this area. And, when work is
completed, be sure to remove the pin so that full
steering is available to the operator.
Figure 13-15.--Scrub brush.