Tennant 140, Operator And Parts Manual

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MAINTENANCE
3-9
140 MM130 (12--96)
BRUSHES
MAIN BRUSH
The main brush is tubular and spans the width of
the machine. It sweeps debris into the hopper. It
should be inspected daily for wear or damage.
Remove any string or wire found tangled on the
main brush, main brush drive hub, or main brush
idler hub.
The main brush pattern should be checked after
every 20 hours of operation. The main brush
pattern should be approximately 1.5 in (40 mm)
wide when sweeping hard floors and 0.5 in
(15 mm) when sweeping carpeted floors. Check
the main brush pattern only on hard floors with the
main brush in the lowered position. Main brush
pattern adjustments are made by rotating the
main brush lift handle. Use the carpet brush on
carpets for better performance and brush life.
Rotate the brush after every 20 hours of operation
for maximum brush life.
The main brush should be replaced when the
remaining brush bristle measures 1.25 in
(30 mm).
TO REMOVE MAIN BRUSH
1. Stop the engine and remove the spark plug
wire.
FOR SAFETY: Before Leaving Or Servicing
Machine; Stop On Level Surface, And Turn Off
Machine And Remove Key.
2. Lift the hopper up and out of the machine.
WARNING: Brush Throws Debris. Stop Motor
Before Lifting Hopper.
3. Pull the main brush removal lever away from
the machine to disengage the main brush
idler plug from the main brush.
4. Grasp the main brush and pull it off the main
brush drive plug and out of the main brush
compartment.
TO INSTALL MAIN BRUSH
1. Pull the main brush removal lever away from
the machine.
2. Line up one of the slotted ends of the main
brush with the drive plug drive keys.
01207
MAIN BRUSH DRIVE SLOTS
A
B
01208
MAIN BRUSH DRIVE PLUG DRIVE KEYS
A. Drive Key
B. Drive Plug
3. Fit one end of the main brush over the main
brush drive plug.
01209
INSTALLING MAIN BRUSH
4. Position the other end of the main brush
over the main brush idler plug.