Tennant ATLV 4300, Service Manual, Page: 62 / 206

VACUUMING
3-14
ATLV 4300 330495 (10--98)
TO ADJUST VACUUM HEAD ACTUATOR LIFT
CABLE
FOR SAFETY: Before Leaving Or
Servicing Machine; Stop On Level
Surface, Set Parking Brake.
1. Make sure the two shorter vacuum head lift
cables have the jam nuts screwed on as far
as possible.
2. Extend (raise) the vacuum head lift actuator
as far as possible. Go under the front of the
machine and check the two black rubber
bumpers. The vacuum head should
compress the bumpers no more than 1/8
inch. If needed, adjust the vacuum head lift
height (see next step).
3. Loosen the jam nut at the end of the long,
black lift cable sleeve. Turn the black cable
sleeve until the head compresses the rubber
bumpers 1/8 inch. Tighten the washer and
jam nut against the black cable sleeve. Use
blue loctite (242) on the threads of the cable.
4. Go to the head stop adjustment knob and
turn all the way clockwise (lowest head
position). Lower the actuator until it stops.
5. Go back under the machine and check the
black cable sleeve. There should be
approximately 1/2 inch of clearance between
the head of the black sleeve and the top of
the thrust bushing.
6. This procedure will leave the rubber skirts
approximately flush with the floor when the
head stop is adjusted to the highest position
(counter--clockwise).