Structural Maintenance
120
Defrost Damper
Check the damper during scheduled maintenance
inspections 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 energized, the damper will
close.
d. Retighten the adjustment angle and repeat
steps a. and b.
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 (see Tool Catalog).
1
2
AEA924
Incorrect
Incorrect
Correct
1.
Move Angle Down
2.
Move Angle Up
Figure 77: Defrost Damper Adjustment
Содержание 919180
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Страница 32: ...Unit Description 32 Unit Photographs Figure 3 Front View Figure 4 Back View AJA584 AJA585...
Страница 33: ...Unit Description 33 Figure 5 Left Side View Figure 6 Right Side View AJA586 AJA58...
Страница 35: ...Unit Description 35 Figure 8 North American Power Receptacle Box AJA58...
Страница 38: ...Unit Description 38...
Страница 58: ...Electrical Maintenance 58...
Страница 66: ...Engine Maintenance 66 Figure 37 Fuel and Oil System Components...
Страница 84: ...Engine Maintenance 84...
Страница 96: ...Refrigeration Maintenance 96...
Страница 118: ...Hilliard Clutch Maintenance 118...
Страница 136: ...Cycle Diagrams 136...
Страница 140: ...Wiring and Schematic Diagrams Index 140...
Страница 141: ...141 Truck S Model SR 30 Schematic Diagram Page 1 of 2...
Страница 142: ...142 Truck S Model SR 30 Schematic Diagram Page 2 of 2...
Страница 143: ...143 Truck S Model 30 Units with P T Wiring Diagram Page 1 of 2...
Страница 144: ...144 Truck S Model 30 Units with P T Wiring Diagram Page 2 of 2...
Страница 145: ...145 Truck S Model 50 Schematic Diagram Page 1 of 2...
Страница 146: ...146 Truck S Model 50 Schematic Diagram Page 2 of 2...
Страница 147: ...147 Truck S Model 50 Units with P T Wiring Diagram Page 1 of 2...
Страница 148: ...148 Truck S Model 50 Units with P T Wiring Diagram Page 2 of 2...