____________________________________________________________________
G1000 System Maintenance Manual
Page 9-7
190-00903-00
Rev.
A
In order to establish appropriate thresholds for the semi-automated check, Garmin has examined
data from its factory, field inspections of slip clutch, and extensive lab tests and life tests. As
part of that evaluation, Garmin considered both GSA 8X load cell variation, GSM 85(A) slip
clutch tolerance over temperature, and friction differences between ball and bronze bearings
among other things. Based on that data, the calculations below can be used to calculate the
semi-automated slip clutch test tolerances based on a given nominal slip clutch setting.
It should be noted that if specific axes are considered not load critical, increased tolerance at the
low end could be utilized beyond that recommended below. If it is desired to take advantage of
this in order to reduce removals, Garmin should be contacted to determine if this can be
accomplished and if flight test data exists to substantiate such a reduction.
GSM 85(A) Units with Ball Bearing, no Idler Pulley
This determination method is applicable to the following GSM 85(A) part numbers:
•
011-01436-( ) (except -07 and -08)
•
011-00894-01
•
011-00894-04
•
011-00894-05
•
011-00894-06
•
011-00894-09
•
011-00894-11
•
011-00894-14
The allowable limits of the test results can be determined as follows:
•
Upper limit = Nominal Slip Clutch Setting * 1.120
•
Lower limit = Nominal Slip Clutch Setting * 0.942
GSM 85(A) Units with Ball Bearing, with Idler Pulley
This determination method is applicable to the following GSM 85(A) part numbers:
•
011-01436-07
•
011-01436-08
•
011-00894-12
The allowable limits of the test results can be determined as follows:
•
Upper limit = Nominal Slip Clutch Setting * 1.030
•
Lower limit = Nominal Slip Clutch Setting * 0.867
GSM 85(A) Units with Bronze Bearing, no Idler Pulley
This determination method is applicable to the following GSM 85(A) part numbers:
•
011-00894-00
•
011-00894-07
•
011-00894-08
•
011-00894-10
