Viper RT-10 V10-8.0L VIN E (1997)
Air Door Actuator / Motor: Description and Operation
Fig 3 Actuator Identification
Fig 4 Recirc Duct/Vacuum Actuator
VACUUM ACTUATORS - MODE DOORS
The Heater (A/C) system has three actuators. The one located on the left side of the heater housing has two positions and a single vacuum hose
attached to it. The second one is a three position actuator is located on the right side of the heater housing and has two (2) vacuum hoses attached
to it. The third actuator is located on the recirc duct with a single vacuum hose attached to it.
The actuators can be tested and/or replaced without having to remove the heater housing.
The two position actuator's function is to direct the incoming air through the (A/C) vent ducts or the heat/defrost ducts.
The three position actuator's function is to direct the ratio of air going to the heater/defrost ducts:
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Position one allows 80 percent floor air and 20 percent defrost air.
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Position two allows 50 percent floor air and 50 percent defrost air.
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Position three allows 20 percent floor air and 80 percent defrost air.
The recirc door vacuum actuator function is to allow a mixture of fresh and recirculated air to be utilized by the system.
