Structural Maintenance (Rev. 04/03)
94
DEFROST DAMPER
Check the damper during scheduled maintenance inspec-
tions for shaft wear, end play and sealing against air flow.
Position the damper so that the air flow is stopped top and
bottom with the solenoid plunger bottomed.
1.
If the damper does not close completely:
a.
Energize damper solenoid by placing a jumper
wire from 12 Vdc to No. 29 wire in the evaporator
harness.
b.
If damper blade closes, proceed to step 2. If not,
proceed to step 1.c.
c.
Remove the jumper wire, loosen the evaporator
outlet adjustment angle and move so when ener-
gized, the damper will close.
d.
Retighten the adjustment angle and repeat steps a.
and b.
Defrost Damper Adjustment
2.
If the damper blade does not seal evenly along full
width of blade:
a.
Loosen the damper bearing blocks.
b.
Manually close the damper so the blade makes
contact at the top and bottom of the funnel, the full
width of the blade.
c.
Retighten damper bearing blocks.
d.
Lube bearing block and shaft with low temperature
grease TK No. 203-386.
Содержание 088669
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