G1000 Nav III Line Maintenance Manual
Page 6-3
190-00352-00
Rev. L
6.2
GFC 700 Visual Inspection Procedure
1.
Remove the access panels according to the Cessna Maintenance Manual.
2.
Using a flashlight, inspect the servos, connectors, support structures, and control cables to ensure that
no corrosion, chaffing, cracks, or other defects exist.
3.
Have an assistant manually move the ailerons (for roll servo), elevators (for pitch servo), and elevator
trim wheel (for pitch trim servo) from stop to stop and observe the servo, capstan, and control surface
rigging. Ensure there is no binding in the control cabling, and that the capstan pulleys rotate freely.
4.
Check the servo control cables to ensure no fraying, corrosion, or other damage exists. If the
condition of the cable is questionable, replace it with a new one. Check the tension of each servo
control cable. Refer to the Cessna Maintenance Manual for cable tension specifications.
5.
Inspect the GFC 700 system wiring and ensure no chaffing, wear, or other damage exists.
6.
Replace the access panels if no other maintenance is to be performed.
6.3
GSA 81 Greasing Procedure
1.
Remove each servo.
2.
Remove excess grease build-up from the single servo output gear using a lint-free cloth.
IMPORTANT
It is not necessary to remove all of the grease from the output gear, only the
excess grease. DO NOT USE SOLVENTS TO CLEAN THE OUTPUT GEAR!
3.
Using a brush or other applicator, apply a thin coat of grease to the servo output gear. Use Aeroshell
33 (preferred) or Aeroshell 17.
4.
Re-install the servos.
5.
Rotate control surfaces through their range of motion.
6.4
GSM Slip Clutch Checking and Adjustment Procedure
Refer to the Cessna Maintenance Manual for rigging and de-rigging instructions. For instructions on checking
and adjusting the slip clutch refer to Section 3.3 of the GSA 8X/GSM 85(A) Installation Manual (P/N 190-00303-
72). See Tables 6-2 and 6-3 for slip clutch settings. This adjustment requires the use of the Garmin servo
adjustment fixture, P/N T10-00110-01.
Servo
Settings
(in-lbs)
Tolerance
(in-lbs)
Pitch 39
+/-5
Pitch Trim
64
+/-8
Roll 77
+/-9
Table 6-2. T206H Slip Clutch Settings
Servo
Settings
(in-lbs)
Tolerance
(in-lbs)
Pitch 35
+/-5
Pitch Trim
45
+/-6
Roll 55
+/-7
Table 6-3. T182T Slip Clutch Settings
Summary of Contents for G1000 NAV III
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