GSA 8X/GSM 85(A) Installation Manual
Page 3-21
190-00303-72
Revision R
3.4 GSA/GSM
Installation
CAUTION
The GSA 8X and GSM 85(A) should be installed according to Type Certification (TC) or
Supplemental Type Certification (STC) approved aircraft-specific installation drawings.
The information in this section is provided as guidance, and does not take precedence
over installation procedures defined in aircraft-specific GFC 700 installation data.
1.
Prepare the servo installation site. Make sure that the servo bracket(s) are installed securely to
the airframe. Make sure that the servo gearbox cutouts are made according to the dimensions
listed in Appendix A, for the correct servo gearbox. If the applicable cableguard or chainguard
ring is not already installed to the front of the servo, (refer to applicable drawing in Appendix A)
install the cableguard or chainguard ring using four #4-40 machine screws and lock washers as
supplied in the cableguard ring kit (011-01336-XX) or chainguard ring kit (011-01375-XX).
Reference Section 2.3.2.
It may be beneficial to accomplish steps 3, 4, 5, and/or 6 before continuing with Step 2,
depending on installation-specific considerations.
2.
Fasten the GSM 85(A) to the correct structural bracket per the aircraft manufacturer
specifications (reference Section 2.3.2). Mounting hardware to be provided by the installing
agency.
3.
Attach the aircraft control surface cabling/chains to the output pulley or sprocket following
guidance provided in aircraft manufacturer specifications (reference Section 2.3.2 and Appendix
A).
On some capstans, the center ball may snap into place. Always ensure the ball is fully
seated in the capstan.
4.
Assemble the capstan cover and standoffs (reference Section 2.3.2 and Appendix A). Refer to
aircraft-specific installation documentation for proper location of standoffs to provide proper
support of the capstan cover. Use the machine screws and lock washers to install the capstan
cover.
5.
Apply grease (reference Section 2.3.2) to the output gear of the GSA 8X in accordance with the
applicable airframe specific G1000 line maintenance manual, if required. Grease is required if
the servo has been removed for periodic inspection or maintenance. Grease is required any time
the servo and servo gearbox are separated. If both servo and servo gearbox are new, grease is not
required, as sufficient grease is applied to the servo gearbox during its manufacture.
6.
Carefully mate the GSA 8X with the GSM 85(A), noting the correct orientation for the gears to
line up. Fasten the GSA 8X to the GSM 85(A) per the aircraft manufacturer specifications
(reference Section 2.3.2). Mounting hardware to be provided by the installing agency.
7.
Connect the GSA 8X connector to the aircraft harness. Make sure that the harness is properly
secured to the airframe.
8.
After all servos are installed and all aircraft control surfaces connected, continue to Section 3.5.
NOTE
NOTE