Table 4-10, Gsm 86 Slip Clutch Torque Settings - Garmin G1000 Nxi System Maintenance Manual

Manual Slip Clutch Test Procedure
This test is an alternative to the automated and manual slip clutch test procedures. The GSM
86 servo gearbox does not have an adjustable slip clutch; however, the torque value can be
measured using this procedure.
This adjustment requires the use of the Garmin servo adjustment fixture,
P/N T10-00110-01. For detailed operating instructions for the fixture,
refer to GSA8X / GSM85(A) Installation Manual, listed in Table 1-2.
It is highly recommended that the following test be performed at
temperatures between 50° F and 120° F.
1. Remove the GSM 86 servo gearbox as per Section 6.13.
2. Place the GSM 86 servo gearbox on the slip-clutch adjustment fixture and secure with
the toggle clamps. Install the fixture cable between the capstan under test and the
fixture capstan. Remove the slack in the cable using the tension adjustment knob.
Tighten the two wingnuts on bottom of fixture while holding the top thumbscrews.
3. Attach a socket to a calibrated torque wrench of appropriate range and place on top of
the fixture capstan. Adjust the wrench support fixture so that it contacts the handle in
the appropriate location.
4. Connect a 2 Amp, 24 V, DC power supply to the fixture.
5. Place the solenoid switch to "on" and move the direction switch to the clockwise or
counter-clockwise position. Allow the clutch to rotate at least one revolution in each
direction (note: the capstan itself is fixed.)
6. Observe the torque reading for at least two full revolutions in each direction. Ensure the
minimum and maximum torque readings are within the tolerance specified.
7. If the minimum and maximum torque values are within the specified range in Table 4-10,
the GSM slip clutch is acceptable. Reinstall the GSM 86 servo gearbox per Section
6.13.
8. If the minimum and maximum torque values are not within the specified range in Table
4-10, the GSM 86 slip clutch cartridge must be replaced.

Table 4-10, GSM 86 Slip Clutch Torque Settings

Servo
GSM 86
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
IMPORTANT!
Pitch Trim
66 -9/+10 in-lbs 32 ± 4 in-lbs
Pitch Roll
135 ±20 in-lbs
Page 121
Revision 1