Bandit BTC-150, Operating Instructions Manual

Page: 48 / 113

Bandit
46
Copyright 3/19
MODEL BTC-150 MAINTENANCE
POLY CHAIN BELT TENSION
It is a good practice to rotate the sprockets during
belt tensioning. Then recheck deflections. The belts
may need to be tightened again.
NOTICE
NOTICE
1. Follow all pre-maintenance shut down
procedures.
2. Remove the cutter head beltshield.
3. Remove the old belt and replace with a new
one, if replacing.
4. Measure the belt tension, proper belt tension
for the Mower Head is 7/8” (22 mm) deflection
with 65 ft-lbs (88 Nm). Proper belt tension for the
Stump Grinder Head is 7/8" (22 mm) deflection
with 55 ft-lbs (74 Nm) of force.
5. To adjust tension of the belt, loosen the bolts on
cutter head bearing mount.
6. Tighten or loosen the belt tension adjuster.
7. Check the belt tension with the provided belt
tension tool and readjust if necessary.
8. Tighten the cutter head bearing mount bolts.
9. Tighten the jam nuts on the belt tension adjuster.
10. Check the belt to make sure it is at the specified
tension.
11. Check cutter head sprockets, with a straight edge
to ensure that they are in line.
12. Replace the cutter head beltshield.
DANGER
!
DANGER
!
Before attempting any type of maintenance,
disengage clutch or cutter head engagement, wait for
the cutter head to come to a complete stop, place the
cutter head on the ground, turn off engine, remove
the ignition key, make sure the ignition key is in your
possession, and wait 2 minutes then disconnect the
battery. Make sure the cutter head is set on the ground
or securely blocked up and also chained before doing
any work around or under it.
DO NOT go near the rotating cutter head for any
reason. DO NOT go near the cutter head while the
engine is running or the cutter head is coasting to a
stop. Contact with a rotating cutter head will result
in serious bodily injury or death.
GENERAL RULES FOR TENSIONING
CUTTER HEAD BELTS (POLY CHAIN
BELTS)
1. Check poly chain belt tension during the first
2 - 48 hours of run-in operation or after installing
a new poly chain belt.
2. Over tensioning or under tensioning shortens
belt and bearing life.
3. Keep the belt free from foreign materials that
may cause the belt to slip.
4. Inspect poly chain belt and sprockets daily. Never
use belt dressing as this will damage the belt and
cause early failure.
5. The poly chain belt must never be forced over the
sprocket. Allow enough room for belt to slip on.
6. Always make sure sprockets are aligned properly.
DO NOT IGNORE THIS MAINTENANCE RULE
New belts stretch very soon and must be adjusted
several times in the first few hours of operation.
Adjust after one hour of operation, then every four
hours until the belts quit stretching. Failure to do this
will cause the belts to burn and fly off. THIS FAILURE
IS NOT COVERED BY WARRANTY!
Special care needs to be taken with your cutter
head belt. Alignment, tension, and cleanliness of this
belt is very important. The cutter head belt needs to
be checked for tension approximately every 10 to 20
hours of use. The cutter head belt must be running
true. If the belt runs on an angle, it will cause belt
failure. When replacing the cutter head belts, do not
try to pry the belt on over pulley, this can break the
fibers in the cutter head belt.
NOTICE
POLY CHAIN SPROCKET
ALIGNMENT AND INSTALLATION
1. Place a straight edge on the outside of the drive
sprocket, making sure that the straight edge
touches the outside and inside of the sprocket.
2. Move the sprocket until the straight edge touches
both outside edges and inside edges.
3. Make sure the sprockets are properly aligned.
Alignment should be within 1/4 degree. This is
the maximum “M” dimension of .05” per foot (1.3
mm per 305 mm) center distance.
Sprocket alignment is very important. Proper
alignment allows the load to be transformed equally
across the belt width, which reduces wear and
improves belt life.
ANGULAR MISALIGNMENT
M
M
PARALLEL MISALIGNMENT
M
M