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
6.2 GAC Actuator Throttle Body (ATB)
A representation of the GAC Actuator Throttle Body (ATB) is shown in the following figure. The GAC part
identification sticker is located on the top of the assembly for reference. The ATB is selected using the
ATB Application Matrix which utilizes the displacement of the engine and the desired operating RPM detailed
previously.
ATB Representation
T1 model shown
For GAC actuator throttle body (ATB) dimensions and mounting patterns for the ATBs refer to the following link
for product information:
http://www.governors-america.com/throttle_body_actuators.html
6.2.1 Application Considerations
•
The throttle plate shaft of the ATB should be parallel with the engine crankshaft so that air flow is equally
distributed to all cylinders.
•
Ensure there is adequate clearance above and around the ATB for installation of the required air intake
components and the air fuel mixer / valve assembly using the provided dimensions
.
•
Select the mounting bolts using the dimensions provided to ensure the length and diameter are
appropriate.
•
Turbo-charged applications require internal seals due to the high intake manifold pressure and depending
on the mounting location a High-Temperature variation will also be required.
•
When selecting an installation location for the ATB in turbo-charged applications the preferred
location is as close to the intake manifold as possible and after any charge air cooler to ensure proper
operation.
6.2.2 Installation Procedure
The following information is divided between naturally aspirated engines and turbo-charged applications due to
the differences in mounting locations. Once again, this information refers to GAC ATBs only.
6.2.2.1 Naturally Aspirated Engines
1. Clean the mounting area to the intake manifold from debris including old gaskets or previously applied
sealants.
2. Install the GAC supplied or standard gasket for the throttle body actuator assembly to the intake manifold
or use an approved sealant.
3. Place the actuator assembly over the intake manifold with the intake flow indication arrow pointing toward
the engine (downward) as shown in the following figure.
GAC Part
Identification Sticker
