ADC 450428 service manual Belt Tension Adjustment Tumbler Basket to Idler, To Replace V-Belts

I. V-BELTS

V-belts should have proper tension. If too loose, they will slip, if too tight, excessive wear on the bearings 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 belt.

NOTE: Belts must always be replaced in pairs (matched sets).

V-Belt Tension Adjustment (Tumbler [Basket] to Idler)

1.Discontinue electrical power to the dryer.

2.Back off jam nuts on idler adjustment belts.

3.Tighten belts by turning both bolts evenly clockwise (CW). (Turn counterclockwise [CCW] to loosen belts.)

4.Check vertical plane of idler pulley for parallel alignment with tumbler (basket) pulley.

5.If realignment is required, loosen tumbler (basket) pulley and bushing, and move tumbler (basket) pulley to proper position.

6.Retighten jam nuts.

7.Reestablish electrical power to the dryer.

V-Belt Tension Adjustment (Motor to Idler)

1.Discontinue electrical power to the dryer.

2.Loosen the nuts on the four (4) studs holding the drive motor mount to the back of the dryer.

3.Loosen the jam nuts on the adjustment screw out the top of the motor mount.

4.Turn the adjustment screw to lower the motor mount (to tighten the belts) or raise the motor mount (to loosen the belts).

5.Check the vertical plane of the motor pulley and idler pulley for parallel alignment.

6.If realignment is required, loosen motor pulley and bushing and move motor pulley to proper position.

7.Retighten motor mount bolts and jam nuts.

8.Reestablish electrical power to the dryer.

To Replace V-Belts

1.Loosen tension on V-belts so that they can easily be rolled off pulleys.

2.Replace V-belts.

3.Retighten V-belts and adjust tension and alignment per previous instructions. 32