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40 American Dryer Corp. 450268-1
L. V-BELTS
(Refer to illustration in Sections I, J, and K)
V-belts should have proper tension. If too loose, they will slip, if too tight excessive wear on the bearing
will result. If the pulleys are not properly aligned, excessive belt wear will result. Proper belt tension will
allow 1/2” displacement under normal thumb pressure at mid span of the belt.
V-BELT TENSION ADJUSTMENT – TUMBLER TO IDLER
1. Loosen two (2) bolts connecting idler arm to backup plate.
2. Back off jam nut on the adjustment bolt.
3. Tighten belts by turning adjustment bolt clockwise (turn
counterclockwise to loosen belts)
4. Tighten both bolts connecting idler arm to backup plate.
5. Check vertical plane of idler pulley for parallel alignment
with tumbler pulley.
6. If realignment is required, loosen tumbler pulley and move tumbler pulley to proper position.
7. Retighten jam nut.
V-BELT TENSION ALIGNMENT – MOTOR TO IDLER
1. Loosen two (2) bolts connecting idler arm to backup plate.
2. Back off on jam nut(s) on the adjusting bolt.
3. Loosen/tighten adjustment bolt to decrease/increase belt tension.
4. Tighten adjustment bolt jam nut(s).
5. Tighten the two (2) bolts loosened in
Step #1
.