Nilfisk-Advance 7765 Service Manual page 111

Service Manual – Advance 7765 / Nilfisk CR1500
Sweep System, Main Broom
Functional Description
Overview
The main broom sweep system includes the main broom and lift linkage, hydraulic broom drive motor and
the main broom solenoid valve. One of the 1.02 CIR auxiliary pumps powers the broom drive motor.
The Main Broom Switch on the instrument panel switches the main broom on and off. The Operator
manually raises and lowers the main broom with the main broom lift control lever connected to a mechanical
linkage.
Main Broom and Broom Drive Motor
The is
Main Broom
supported by
Broom Drive
and . The
Arm Idler Arm
Hydraulic Broom Drive Motor
mounts to the
Broom Drive
and drives the
Arm Main
via the
Broom Broom Driver
.
Hub
The and
Broom Drive Arm
are attached to
Idler Arm
the
Broom Chamber Shaft
which is located inside of
the broom chamber.
The
Broom Chamber Shaft
clamps to the and
Shaft
attached and
RH LH Arm
. The ,
Assemblies Shaft RH
and
LH Arm Assemblies
are located outside of the
broom chamber and are
sealed off from the broom
chamber by the
Broom Arm
.
Gaskets
The and
RH LH Arm
pivot on the
Assemblies
in the yokes on the
Pins
machine frame to allow the
main broom assembly to
move up and down.
Hydraulic
Broom
Broom
Drive
Motor Drive
Arm
Broom
Chamber
Shaft
LH Arm
Assembly
Shaft
Lift
Broom
Driver Hub
RH Arm
Assembly
Lift
Pin (2)
Main
Broom
Idler
Arm
Broom Arm
Gasket
(typical)
216