Walinga Agri-Vac 3510 Operator's Manual And Parts Book page 50

5.2.4 BELT TENSION AND ALIGNMENT
Rotational power from the power source is transmitted
to the blower and airlock through the belt drive (electric
model). To obtain e cient transmission of power and
good belt life, the belts must be properly tensioned
and the pulleys aligned.
Belts that are too tight will stretch and wear quickly
or overload the bearings. Belts that are too loose will
not transmit the required power and will slip, overheat
and wear quickly. Pulleys that are not aligned will
result in rapid belt wear.
Follow this procedure when checking and adjusting
belt tension and pulley alignment.
1. Clear the area of all bystanders, especially small
children.
2. Stop the unit wait for all moving parts to stop be-
fore maintaining.
3. Ensure that the unit power source is completely
shut down and can not start up. Lock-out tag-out
power source.
4. Unbolt and remove the belt/chain cover. Lay to the
side.
5. Use a 7 pound weight to determine the belt de ec-
tion in a static condition on a new Agri-Vac
There should be a ¼ inch de ection.
6. Adjusting Tension:
a. Loosen the jam nuts on the adjusting bolts.
Loosen hold-down bolts slightly.
b. Turn the adjusting bolt to set the tension.
Maintain pulley alignment.
c. Check the tension again. Overtightening will
cause belt stretching and overload the bear-
ing. Belts that are too loose will slip, tear and
wear rapidly. Check alignment (next page).
d. Tighten jam nuts. Tighten hold-down bolts.
e. Install and secure guards/covers.
40
FIG. 26 BELT DEFLECTION MODEL 3510
® .
FIG. 27 ADJUSTING BOLTS
Gas
Electric