Upper Belt Tension; Lower Belt Tension - ALLIANCE BA120E Installation Manual

Adjustments
13
5
12
11
10
9
8
1. Basket Pulley
2. Upper Jam Nut
3. Idler Housing Small Pulley
4. Upper Belt Tensioning Nut and Bolt
5. Idler Housing Mounting Screws
6. Idler Housing
7. Belt Tensioning Screw
8. Motor Pulley
9. Lower Belt (Measure Frequency at Mid-Span)
10. Right Jamnut
11. Left Tensioning Nut
12. Idler Housing Large Pulley
13. Upper Belt (Measure Frequency at Mid-Span)
Figure 22
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Copyright, Alliance Laundry Systems LLC -
DO NOT COPY or TRANSMIT
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TMB2650N_SVG

Upper Belt Tension

1. Disconnect electrical power to the tumble dryer before at-
tempting any adjustments to the drive assembly.
2. Loosen idler housing mounting screws.
IMPORTANT: Do not remove screws. Shoulder washers
must be engaged in center brace slots.
3. Loosen the upper jamnut on the upper belt tensioning bolt/
tube.
4. Rotate the lower nut of the upper belt tensioning bolt/tube
clockwise until proper belt tension is achieved.
IMPORTANT: Always rotate the basket pulley a mini-
mum of three full rotations before taking a belt tension
reading.
5. Rotate upper jamnut clockwise against the lower nut in order
to lock it into place, restraining the lower nut from turning.
6. Tighten idler housing mounting screws (torque to 50 ft-lbs).
Recheck belt tension.
7. Lower belt tension will be affected by adjusting the upper belt
tension as it is a dependent system. Refer to section below to
adjust lower belt.

Lower Belt Tension

1. Disconnect electrical power to the tumble dryer before at-
tempting any adjustments to the drive assembly.
2. Loosen the right jamnut on the lower belt adjustment eyebolt.
3. Rotate the left nut on the lower belt adjustment eyebolt clock-
wise until proper belt tension is achieved.
IMPORTANT: Always rotate the basket pulley a mini-
mum of three full rotations before taking a belt tension
reading.
IMPORTANT: Grasp eyebolt neck to prevent spring ro-
tation during nut rotation.
4. Rotate right jamnut clockwise against the lower spring ten-
sion plate in order to lock it into place, restraining the left nut
from turning. Recheck belt tension.
NOTE: Proper tensions for new belts are measured
with a Belt Tension Frequency Gauge.
Belts should not slip or make any noise when starting up under
normal load.
Upper Belt 115 Hz +/-4 Hz
Lower Belt 105 Hz +4/-2 Hz
64
Initial Fre- After Run-in
quency Frequency
102 Hz +15/-2 Hz
102 Hz +4/-2 Hz
Table 13
Part No. 70532501ENR7