Brush Bandit 2900T, Operating & Parts Manual

Page: 46 / 94

Bandit
Copyright 1/07 PAGE 42
MODEL 2900T
BELT TENSION
BELT SECTION
GENERAL RULES FOR TENSIONING
1. Check tensioning during the first 2-48 hours of run-in operation.
2. Over tensioning or under tensioning shortens belt and bearing life.
3. Keep belts free from foreign materials that may cause the belt to slip.
4. Make poly chain belt inspection on a periodical basis. Never use belt dressing as this will
damage the belt and cause early failure.
5. Belts should never be forced over the sheave. Allow enough room for belts to slip on during
removal and replacement.
6. Always make sure sheaves are aligned properly.
NOTE:
It is a good practice to rotate the belts during tensioning. Then recheck deflections. The belts
may need to be tightened again.
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!
POLY CHAIN BELT
Follow all pre-maintenance shut down procedures. Special care needs to be taken with your poly chain belt.
Alignment, tension, and cleanliness of this belt is very important. The poly chain belt needs to be checked for
tension approximately every 70 to 100 hours of use. The poly chain belt must be running true. If you adjust one
bearing more than the other, the belt will run on an angle which will cause belt failure. When replacing the poly
chain belt, do not try to pry belt on over pulley, this can break the fibers in the poly chain belt. After you have
installed or re-tensioned the poly chain belt, you will have to readjust the engine belt for proper tension.
To adjust tension of the poly chain belt, loosen the lock nuts on the hydrostatic motor mount. To tighten the belt,
loosen the top jam nut, and tighten the jack-screw. Then once the belt is adjusted, tighten the top and bottom
jam nuts and tighten the motor mount lock nuts. Check poly chain pulleys with a straight edge to ensure that
they are in line.
SEE NOTE
Model 2900T
NOTE: For a new belt, the deflection is a 3/8” (9.5 mm)
with 36 - 40 lbs. (16.3 - 18.1 kg) of force.
For a used belt, the deflection is a 3/8” (9.5 mm)
with 29 - 33 lbs. (13.2 - 15.0 kg) of force.