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Garmin GSA 8X, Installation Manual

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Page 3-10  

GSA 8X/GSM 85(A) Installation Manual 

Revision R 

190-00303-72 

3)

 

Secure the swaged ball end in the bottom slot of the test fixture capstan.  See Figure 3-12.  If 
necessary, turn off the test fixture solenoid and turn the unit capstan to take up most of the slack in the 
cable.  Turn the solenoid on again to keep the cable from unwinding. 

 
 

 

Figure 3-12.  Cable inserted in bottom slot of fixture capstan 

 
 

4)

 

Insert the swaged ball end of the second cable (233-20003-00) into the top end slot of the fixture 
capstan.  See Figure 3-13. 

 

 

Figure 3-13.  Cable inserted in test fixture capstan top slot 

Summary of Contents for GSA 8X

Page 1: ...190 00303 72 May 2010 Revision R GSA 8X GSM 85 A Installation Manual...

Page 2: ...nical Support Line Toll Free 888 606 5482 Web Site Address www garmin com E mail avionics garmin com Garmin Europe Ltd Liberty House Bulls Copse Road Hounsdown Business Park Southampton SO40 9RB UK Te...

Page 3: ...mber Description of Change 1 10 1 6 Updated warranty statement 2 1 2 1 Updated AC reference R 3 4 3 3 6 Added ability to use spacer washer on any GSM 85 DOCUMENT PAGINATION Section Page Range Table of...

Page 4: ...ates without first obtaining an export license The preceding statement is required to be included on any and all reproductions in whole or in part of this manual WARNING This product its packaging and...

Page 5: ...terials 2 1 2 3 Installation Considerations 2 3 3 INSTALLATION PROCEDURE 3 1 3 1 Unpacking Unit 3 1 3 2 Wiring Harness Installation 3 1 3 3 GSM 85 A Slip Clutch Setting Procedure 3 2 3 4 GSA GSM Insta...

Page 6: ...er slot 3 12 3 18 Cable wrapped around idler middle slot 3 13 3 19 Cable wrapped around unit upper slot 3 13 3 20 Cable routed to fixture capstan 3 14 3 21 Cable wrapped and inserted in upper slot of...

Page 7: ...GSM 85A Servo Gearbox For 1 16 Cable Continous Travel Sheet 2 of 2 A 49 A 14 Cable Wrap Recommendations And Requirements 1 16 Spiral Capstan GSM 85 GSM 85A A 51 A 15 Cable Wrap Recommendations For Co...

Page 8: ...Unit Part Number MOD LEVEL SERVICE BULLETIN NUMBER SERVICE BULLETIN DATE PURPOSE OF MODIFICATION GSM 85 HARDWARE MOD LEVEL HISTORY Applicable Unit Part Number MOD LEVEL SERVICE BULLETIN NUMBER SERVIC...

Page 9: ...TORY Applicable Unit Part Number MOD LEVEL SERVICE BULLETIN NUMBER SERVICE BULLETIN DATE PURPOSE OF MODIFICATION 011 01436 A0 011 01436 A2 011 01436 A3 1 0623 11 2 06 This modification addresses a pot...

Page 10: ...Page viii GSA 8X GSM 85 A Installation Manual Revision R 190 00303 72 This page intentionally left blank...

Page 11: ...tallation instructions in a particular aircraft 1 2 Equipment Description 1 2 1 GSA 80 and GSA 81 Servo Actuator The GSA 8X servo actuator is an electromechanical unit that provides automatic control...

Page 12: ...for GSM 85 and 005 00231 06 for GSM 85A for a list of specific conditions tested Figure 1 2 GSM 85 Servo Gearbox 1 2 3 Operational Description The GSA 8X servo actuator when mated with the GSM 85 A se...

Page 13: ...min web site www garmin com 1 4 2 Physical Characteristics See Tables 1 1 and 1 2 for unit dimension and weight specifications NOTE The weight of the applicable parts in the Cableguard Ring Kit 011 01...

Page 14: ...00 weight 1 55 lbs 0 70 kg 011 01436 01 weight 1 55 lbs 0 70 kg 011 01436 02 weight 1 51 lbs 0 68 kg 011 01436 03 weight 1 51 lbs 0 68 kg 011 01436 04 weight 1 46 lbs 0 66 kg 011 01436 05 weight 1 46...

Page 15: ...C Altitude Range 15 000 ft to 55 000 ft GSA 8X Unit Software RTCA DO 178B Level A software versions 3 00 and later RTCA DO 178B Level B software versions prior to 3 00 1 4 4 GSA 8X Servo Actuator Spe...

Page 16: ...on a clutch setting stand The relationship between the two measurements is as follows Servo actuator load cell torque 0 92 x Torque measured in clutch setting stand The difference between these torqu...

Page 17: ...Table 1 7 for electrical power specifications Table 1 7 Electrical Specifications Characteristics Specifications Input Voltage Range 28 Vdc 80 V Surge Note that some degradation of torque speed capab...

Page 18: ...installed only if performed under 14 CFR Part 43 or the applicable airworthiness requirements At the time of publication installations of this TSO approved article are only approved when installed in...

Page 19: ...85 4 Garmin was granted a deviation from TSO C9c subpart A c which requires marking the weight of the unit on the unit Garmin will provide this information in the installation manual in lieu of marki...

Page 20: ...Y OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE STATUTORY OR OTHERWISE THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS WHICH MAY VARY FROM STATE TO STATE IN NO EVENT SHALL GARMIN BE LIABLE FOR...

Page 21: ...ted by the installing agency to fit each particular aircraft The guidance of FAA advisory circulars AC 43 13 1B and AC 43 13 2B where applicable may be found useful for making retro fit installations...

Page 22: ...m Torque 010 00304 10 011 00894 11 Spiral Capstan Medium Torque 3 32 Cable 010 00304 11 011 00894 14 Sprocket Capstan Medium Torque 010 00304 14 GSM 85A Unit Only 011 01436 XX is available in the foll...

Page 23: ...bleguard or chainguard ring kit New installations may require a new kit 2 3 Installation Considerations The GSA 8X servo actuator interfaces directly with the GIA Integrated Avionics Units Fabrication...

Page 24: ...ative to GSM 85 A ensuring there is still relative movement between the two units 4 Starting with two opposite corner bolts tighten all bolts to proper torque per the specifications given in Table 2 5...

Page 25: ...depth into front face of GSM 85 A 25 75 25 75 Tested limit of weight of parts solidly attached to universal hub 29 lbs Cable pay off angle 3 max from cable groove 3 max from cable groove Groove angle...

Page 26: ...nnected using a chain or cable to an idler pulley A torque wrench attaches to the pulley The wrench s travel is limited by means of a supporting bracket which prevents the capstan from being able to r...

Page 27: ...on of cables and connectors The installer shall supply and fabricate all of the cables All wiring must be performed in accordance with FAA acceptable methods and procedures See Section 2 3 1 for addit...

Page 28: ...has not been set 3 3 2 Precautions The following precautions must be observed when assembling testing or replacing the Garmin Slip Clutch Fixture 3 3 2 1 Mechanical Hazards The slip clutch fixture co...

Page 29: ...ng will be required to use the Garmin Slip Clutch Fixture 1 Garmin Slip Clutch Fixture P N T10 00110 01 2 Garmin Chain P N 233 30001 01 included with fixture 3 Garmin Sprocket P N 380 00015 00 include...

Page 30: ...ws using 2 Phillips screwdriver 5 Place chain connecting the unit capstan sprocket to the fixture capstan sprocket Chain should be slack 6 Continue Section 3 3 7 at step 7 Fixture Capstan Sprocket Mou...

Page 31: ...led the existing spacer washer can be removed To install the extra spacer washer or remove the existing spacer washer perform the following steps 1 Orient the servo gearbox with the shaft pointing up...

Page 32: ...the top of fixture Do not force unit on to fixture See Figure 3 4 Figure 3 4 Unit Placement 3 Engage all necessary clamps to hold unit in place Some units will use only 2 of the fixture clamps Adjust...

Page 33: ...Figure 3 6 Wrap cable around fixture capstan two full turns beginning at the bottom see Figure 3 7 Figure 3 6 Cable Placement fixture capstan Figure 3 7 Cable Placement fixture capstan 2 Wrap cable a...

Page 34: ...two more full turns around fixture capstan and slipping the swaged ball end into the top end slot of fixture capstan Cable will be somewhat loose See Figure 3 9 For sprocket and chain method refer to...

Page 35: ...Figure 3 10 Inserting 3 32 cable in the unit capstan 2 Wrap the cable around the unit capstan approximately three and one half turns leaving just enough cable to reach the bottom end slot of the test...

Page 36: ...t fixture solenoid and turn the unit capstan to take up most of the slack in the cable Turn the solenoid on again to keep the cable from unwinding Figure 3 12 Cable inserted in bottom slot of fixture...

Page 37: ...in the bottom end slot of the unit capstan See Figure 3 14 Figure 3 14 Cable wrapped around test fixture capstan remaining end installed in unit capstan bottom slot 6 With the cables properly installe...

Page 38: ...stan Figure 3 17 Figure 3 16 Cable end inserted in bottom slot Figure 3 17 Cable wrapped 2 5 times going across to unit capstan lower slot 2 Wrap the cable half of one turn around the unit capstan and...

Page 39: ...GSA 8X GSM 85 A Installation Manual Page 3 13 190 00303 72 Revision R Figure 3 18 Cable wrapped around idler middle slot Figure 3 19 Cable wrapped around unit upper slot...

Page 40: ...apstan 3 Wrap the cable another one and a half turns around the fixture capstan bringing the end of the cable to the upper end slot of the fixture capstan Figure 3 21 Guide the swaged ball into the en...

Page 41: ...GSA 8X GSM 85 A Installation Manual Page 3 15 190 00303 72 Revision R Figure 3 22 Slack taken up capstan centered Figure 3 23 Slack taken up capstan centered view from top...

Page 42: ...units install the chain 233 30001 01 by engaging the teeth on the unit sprocket See Figure 3 24 and 3 25 Figure 3 24 Sprocket capstan installed on fixture Figure 3 25 Chain around unit sprocket 2 Supp...

Page 43: ...2 Revision R Figure 3 26 Chain engaged on both sprockets supported by hand 3 Turn the fixture adjustment knob enough to ensure the chain stays engaged on both fixture and unit sprockets Figure 3 27 Co...

Page 44: ...aining slack in cable or chain should allow for approximately 0 25 deflection using finger pressure midway between the fixture capstan and the unit capstan Figure 3 28 Figure 3 28 Fixture Adjustment K...

Page 45: ...ake sure that the torque wrench is initially set to zero torque before placing it in the fixture The torque wrench support should be adjusted to hold the torque wrench level The torque wrench support...

Page 46: ...Run the capstan two full turns in each direction while observing the torque reading If the torque reading remains within the required range without any adjustment of the castle nut proceed to step 8...

Page 47: ...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 som...

Page 48: ...following instructions do not preclude the necessity to reapply grease per Step 5 of Section 3 4 if applicable Maintenance for the GSA 8X servo is on condition if any of the following conditions appl...

Page 49: ...l power pins A B C D E F G H J L M N P R S T U V K Figure 4 1 J801 Connector Layout Table 4 1 J801 Connector I O Pin Pin Name I O A Spare B Spare C Spare D Spare E RS 485 2 B I O F SERVO PROGRAM 3 In...

Page 50: ...for normal operations Table 4 3 RS 485 Pins Pin Pin Name I O J RS 485 1 A I O T RS 485 1 B I O S RS 485 2 A I O E RS 485 2 B I O 4 4 Servo Program Inputs The servo program inputs listed in Table 4 4 a...

Page 51: ...E DRAWING S 011 00877 00 20 21 GSA 80 Servo Actuator A 1 011 00878 00 GSA 81 Servo Actuator A 2 011 00878 10 20 GSA 81 Servo Actuator A 3 011 00894 00 07 GSM 85 Servo Gearbox for 1 16 cable 2 bolt A 4...

Page 52: ...Page A 2 GSA 8X GSM 85 A Installation Manual Revision R 190 00303 72 This page intentionally left blank...

Page 53: ...O C H T I W S E T A M 0 0 7 2 0 1 0 1 1 0 4 7 0 2 6 1 8 0 5 2 4 x 2 5 9 7 0 1 8 1 8 1 8 1 6 4 3 1 5 6 5 3 1 1 2 1 X A M 5 6 7 4 0 2 6 7 0 0 0 3 5 8 0 2 X A M 1 2 8 1 0 2 1 1 5 0 0 1 4 5 2 0 4 1 5 2 6...

Page 54: ...3 8 8 S E T O N M M S E H C N I N I S N O I S N E M I D 1 9 8 6 6 0 8 0 1 5 2 4 0 2 6 7 0 0 0 3 4 7 0 2 6 1 8 4 3 6 2 3 3 3 1 5 2 6 8 8 5 1 8 1 4 4 0 0 8 7 8 0 0 1 1 0 X A M 5 7 7 9 6 9 1 9 4 0 0 1 X...

Page 55: ...8 x 2 8 1 8 1 x 2 8 1 6 4 S E T O N M M S E H C N I N I S N O I S N E M I D 1 011 00878 10 AND 011 00878 20 T I K R O T C E N N O C H T I W S E T A M 0 0 7 2 0 1 0 1 1 0 0 5 4 3 3 6 7 8 3 1 6 4 0 0 1...

Page 56: ...O T E V O O R G H T P E D L L U F F O T O L S L L A B G N I T A C O L H T I W S N R U T 5 S I E V O O R G R E T N E C T A 3 8 2 5 6 6 4 2 S M S I N I P R E T T O C 7 S B L N I 2 0 1 O T D E N E T H G...

Page 57: ...N E C S N O I S N E M I D T U O T U C T E K C A R B 2 1 E L A C S X O B R A E G O V R E S 5 8 M S G T L O B 2 E L B A C 6 1 1 R O F 7 0 0 0 4 9 8 0 0 1 1 0 N O D E R E T N E C E L O H G N I T N U O M...

Page 58: ...E L B A C F O R E T E M A I D H C T I P 5 7 9 1 S I F O D N E M O R F H T G N E L E V O O R G N A T S P A C L A T O T 6 X O B R A E G O V R E S 5 8 M S G T L O B 4 E L B A C 6 1 1 R O F 0 1 8 0 4 9 8...

Page 59: ...5 8 M S G T L O B 4 E L B A C 6 1 1 R O F 0 1 8 0 4 9 8 0 0 1 1 0 3 7 5 1 8 3 0 5 1 5 2 2 2 1 0 3 E N A L P G N I T N U O M 6 U R H T 3 S E T O N E E S 6 7 3 9 1 N A T S P A C F O R E T N E C S N O I...

Page 60: ...R C S G N I T N U O M 7 5 2 T S A E L T A X O B R A E G O V R E S O T N I E D U R T O R P S W E R C S S I H T P E D D E D N E M M O C E R 5 7 N A H T E R O M O N D N A 5 2 3 8 2 5 6 6 4 2 S M S I N I...

Page 61: ...A C S N O D E R E T N E C E L O H G N I T N U O M 6 9 7 1 1 5 1 0 2 8 5 1 2 6 R x 4 R 4 6 5 2 9 6 2 x 2 3 8 6 4 1 3 R x 2 5 2 R P Y T 4 6 E N A L P G N I T N U O M 6 U R H T 2 S E T O N E E S 2 E L B...

Page 62: ...E R C S 5 7 N A H T E R O M O N D N A 5 2 5 2 S I H T P E D D E D N E M M O C E R E L B A C 6 1 1 R O F D E N G I S E D N A T S P A C 3 R E L D I N O D E P P A R W E L B A C F O R E T E M A I D H C T...

Page 63: ...2 5 3 9 7 8 2 0 4 9 8 0 0 1 1 0 X O B R A E G O V R E S 5 8 M S G L E V A R T S U O U N I T N O C F O R E T N E C N A T S P A C S N O I S N E M I D T U O T U C T E K C A R B 2 1 E L A C S 2 0 1 E L O...

Page 64: ...C E P S T E K C O R P S 2 H C T I P 5 2 H T E E T 0 3 F E R R E T E M A I D H C T I P 9 3 2 T A H T H C U S E B L L A H S H T G N E L W E R C S G N I T N U O M 3 5 2 T S A E L T A X O B R A E G O V R...

Page 65: ...N I T N U O M 2 0 8 2 0 1 0 1 1 0 N I N A T S P A C S W E R C S G N I R D R A U G N I A H C L L A D N A S W E R C S R E V O C D L U O H S S F F O D N A T S S B L N I 2 0 1 O T D E N E T H G I T E B 4...

Page 66: ...5 2 S I H T P E D D E D N E M M O C E R E T A D O M M O C C A O T Y R A S S E C E N S A D E V O M E R E B Y A M S W E R C S D A E H N A P 0 4 4 R U O F 4 T N E M H C A T T A L O R T N O C T F A R C R...

Page 67: ...5 1 T R A P G N I T A M F O D I D E D N E M M O C E R E R U T A E F G N I T A C O L 0 3 5 1 5 2 2 3 7 5 B U H F O R E T N E C T E K C A R B D R A D N A T S S N O I S N E M I D T U O T U C 2 1 E L A C...

Page 68: ...A C O L L L A B T S R I F 0 9 2 S N R U T 3 S I N O I T A C O L T A H T H C U S E B L L A H S H T G N E L W E R C S G N I T N U O M 6 5 2 T S A E L T A X O B R A E G O V R E S O T N I E D U R T O R P...

Page 69: ...A S R E H S A W D N A S W E R C S S F F O D N A T S G N I R P O T R U O F R O E E R H T T I K 4 0 8 2 0 1 0 1 1 0 N I D E N I A T N O C S N O I T I S O P S U O I R A V N I D E C A L P E B Y A M S F F...

Page 70: ...4 2 x 2 3 6 x 2 5 2 5 6 S E T O N m m S E H C N I N I S N O I S N E M I D 1 T A H T H C U S E B L L A H S H T G N E L W E R C S G N I T N U O M 2 5 2 T S A E L T A X O B R A E G O V R E S O T N I E D...

Page 71: ...N I A T N O C S N O I T I S O P S U O I R A V N I D E C A L P E B Y A M S F F O D N A T S E T A D O M M O C C A O T S F F O D N A T S E C A L P F F O Y A P E L B A C T R O P P U S G N I R P O T R E P...

Page 72: ...E B L L A H S H T G N E L W E R C S G N I T N U O M 2 5 2 T S A E L T A X O B R A E G O V R E S O T N I E D U R T O R P S W E R C S S I H T P E D D E D N E M M O C E R 5 7 N A H T E R O M O N D N A 5...

Page 73: ...R C S D N A N E T H G I T T I K X X 5 7 3 1 0 1 1 0 0 1 O T S W E R C S S B L N I 2 E V O M E R G N I L L A T S N I E R O F E B D A E H N A P 0 4 4 4 D R A C S I D D N A T N O R F N I D E L L A T S N...

Page 74: ...P R U P E V I T A R T S U L L I D E S U E B T S U M L A E S D N A P A C L A T N E M N O R I V N E L L A E R U S N E O T T E M E R A S N O I T A C I F I L A U Q S R E H S A W D N A S W E R C S P A C T...

Page 75: ...L B A C F O R E T E M A I D H C T I P 4 9 0 1 S I Y E L L U P N A T S P A C N O D E P P A R W E L B A C F O R E T E M A I D H C T I P 5 2 8 1 S I 2 3 0 1 x 4 S E L O H G N I T N U O M 2 E T O N E E S...

Page 76: ...I A T N O C G N I R R E N E F F I T S 0 1 O T S W E R C S N E T H G I T S B L N I 2 N I M R A G S I T E K S A G T N E M E C A L P E R 0 0 5 8 1 0 0 3 5 2 R E B M U N T R A P S W E I V Y L B M E S S A...

Page 77: ...T O R N O I T C E R I D R E H T I E N R U T L L U F L E V A R T 4 2 1 F O M U M I X A M G N I W O L L A F O N R U T 4 1 F O M U M I N I M A S E V A E L S I H T 1 T I X E E L B A C D N A L L A B E H T...

Page 78: ...0 4 9 8 0 0 1 1 0 R O F S N O I T A D N E M M O C E R P A R W E L B A C S E X O B R A E G O V R E S L E V A R T S U 0 U N I T N O C A 5 8 M S G D N A 5 8 M S G S N O I T C E R I D E T I S O P P O N I...

Page 79: ...ation Manual Page A 55 Page A 56 blank 190 00303 72 Revision R D N E N A T S P A C M O R F D E W E I V S A T F E L E H T O T S D N E T X E L I A T G I P H T D R A W O T S I N A T S P A C N E H W E T A...

Page 80: ...APPENDIX B INTERCONNECT DIAGRAMS GSA 8X GSM 85 A Installation Manual Page B 1 Page B 2 blank 190 00303 72 Revision R Figure B 1 GSA 8X Interconnect Diagram Typical Three Servo Installation...

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