AFR200 Series, Product User Guide
This document is subject to change without notice.
Caution: None of GAC products are flight certified controls including this item
Copyright © 2010, Governors America Corp., All Rights Reserved
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PUG4144 D
Airflow indication
4. Torque the mounting bolts down to 9-14 lb. in. [1-1.6 N•m]. Take caution not to over-torque any
components based on the selected hardware.
6.2.2.2 Turbocharged Engines
1. Clean the mounting areas on either side of the ATB from debris including old gaskets or previously
applied sealants; ideally this location is as close to the intake manifold as possible and after the charge
air cooler.
2. Install standard or GAC supplied or gaskets for the throttle body actuator assembly to the intake manifold
connecting location or use an approved sealant.
3. When installing the actuator assembly ensure the flow indication arrow is pointing toward the engine
intake as indicated in the following figure.
4. Torque the mounting bolts down to 9-14 lb. in. [1-1.6 N•m]. Take caution not to over-torque any
components based on the selected hardware.
5. Repeat a similar procedure for the alternate end of the ATB interface with the intercooler output.
6.3 Air-Fuel Mixer & Control Valve Assembly
The air-fuel mixer and control valve assembly is used to adjust the air to fuel ratio to the engine in order to
regulate how lean or rich the engine will run. The mixer and control valve comes as one combined assembly from
GAC for a simplified installation. A picture of a mixer / valve assembly mounted on top of an ATB is shown in the
following figure. The control valve stepper motor, fuel inlet, and fuel mixer holes have been called out for clarity
as well.
Example Medium Bore Mixer / Valve mounted on ATB
Airflow Direction
Indication
Fuel mixer holes
Air – Fuel Control
Valve Stepper
Motor
Fuel Inlet
