Chapter 28 Fuel - Extra Aircraft
Contents
1. PAGE DATE 31 January 1995 CHAPTER 28 PAGE 27 FLUGZEUGBAU GmbH INDICATING SERVICE MANUAL EXTRA 300 8 488 5 282 8 28 2 5 H Ps E 588 9 0 ce Indicating Figure 16 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 28 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 28 41 00 MAINTENANCE PRACTICES 28 41 01 Fuel Quantity Indicator Removal Installation 1 Disconnect battery on 2 nuts remove the mounting bracket and remove the fuel quantity indicator 3 Disconnect the wiring the lamp is not used 4 Install in reverse se quence of removal ob serving the wiring dia gram PAGE DATE 31 January 1995 CHAPTER 28 PAGE 29 EXTRA FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 28 41 02 Fuel Quantity Indicator Calibration Center Tank 1 Drain the fuel system refer to Chapter 12 10 02 2 Remove the fuel quantity indicator following step 2 of Chapter 28 41 01 3 Bring indicator to position by turning the ENS adjustment screw 4 Reinstall the fuel quantity indicator 28 41 03 Tubular Tank Unit Center Tank Removal Installation Drain the fuel system per Chapter 12 10 02 2 Loosen one bolt and re place by a M5 threaded rod 1 for securing the slotted retainer ring 2 Remove t2. ending outside of the fuselage at the right side of the main landing gear spring Center Tank Figure 3 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 8 5 FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 SOUT 2 8 deo Jo e Surujugi OT yur 38 yur 194099 8 7 9 28 Storage Figure 4 PAGE DATE 1 June 1996 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 28 11 00 28 11 01 MAINTENANCE PRACTICES Center Tank Removal Installation Remove the top and bottom halves of the engine cowl ing and the tank covering sheet refer to Chapter 51 2 Drain the fuel system per Chapter 12 10 02 3 Loosen the electrical facilities and the hose fixtures 4 Loosen and remove the metal attachment belts with the rubber stripes 5 Remove the center tank 6 Install in reverse sequence of removal PAGE DATE 31 January 1995 CHAPTER 28 PAGE 10 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 MAINTENANCE PRACTICES 28 11 02 WARNING NOTE Center Tank Flop Tube Removal Installation 1 Drain the fuel system per Chapter 12 10 02 2 Disconnect the hose 5 and the elbow fitting 4 3 Loosen the flop tube fitting 3 and take the flop tube assembly 2 out of the center tank
3. lowed in the immediate area and no other maintenance should be performed while the tanks are being worked on When a fuel tank is opened for repair air ventilation refer to Page 7 should be started immediately to re duce vapor concentrations PAGE DATE 31 January 1995 CHAPTER 28 PAGE 6 EXTRA FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 Reduction of Fuel Tank Vapor Hazards 9 Whendraining fuel ensure that suitable containers are available and that drained fuel is stored safely Do not allow fuel to drip to the ground and form pools 10 Ifit is necessary to ventilate a tank when the aircraft is in hangar ensure that vapors do not accumulate to ex plosive or toxic levels in the hangar WARNING When fuel is being drained there is little control over the release of fuel vapor This vapor should be dissi pated as quickly as possible Compressed air or explo sion proof blowers may be used for the purpose Air Ventilation 1 Completely drain the fuel system per Chapter 12 10 02 2 Remove inspection doors refer to Chapter 28 11 03 and tank caps 3 Use compressed air or an explosion proof blower to blow air into the tank until tank interior is dry and free of vapor 4 Continue ventilation whenever tank is open and being worked on WARNING If flammable vapors from cleaning solvents are allowed in the tank increase air circulation to dissipate them PAGE DATE 31 January 1995 CHA
4. 5 3 5 9 5 5 SE H 0 25 HS Eel O Q r e 5 5 5 5 amp di O EN Electrical Wiring Figure 2 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 5 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 28 01 00 28 01 01 28 01 02 MAINTENANCE PRACTICES Refueling Defueling Refer to Chapter 12 for detailed refueling defueling proce dures Reduction of Fuel Tank Vapor Hazards General Precautions During all ventilation or maintenance procedures involving the fuel system observe the following general precautions 1 should be outdoors with the aircraft at least 100 feet from hangars or other aircraft No smoking should be allowed within 100 feet of the aircraft Suitable fire fighting equipment should be available Foam or soda type extinguishing agents are recom mended Ground the aircraft to prevent static electricity from causing sparks If a ramp ground is available it should be connected to exhaust stack If a ramp ground is not provided a temporary ground can be obtained by driv ing a metal rod into the ground and attaching a ground wire between the rod and the aircraft exhaust stack Flame and spark producing equipment should not be operated within 100 feet of the aircraft The aircraft should have its battery removed Only personnel working on the aircraft should be al
5. 6D mint ft 816 4D Lalleu 00159 Center tank to shut off valve connection B 5 816 6D PC 00158 818 4D PC 00161 818 6D PC 00160 819 4D PC 00860 819 6D PC 00162 822 6D PC 00164 823 6D PC 00166 832 6D PC 00170 833 6D PC 00172 911 1D PC 00988 912 9D PC 00176 916 1D PC 00180 924 6D PC 00177 N960 C916 PC 01852 ring MS29512 06 N 01270 O Hoses 20 AEROQUIP 303 6 8 PN PC 00403 de Shut off valve to gascolator connection 9 Li 12 E 13 14 15 Jd Jd Jd Jd Jd Jd Jd Jd Jd Jd Jd Jd Jd Jd Jd ZO 16 gt 2 17 d 30 strainer tube PN PC 63202 2 31 alu tube 5052 0 03 8 inch PN PC 00122 32 alu tube 5052 0 21 4 inch PN PC 00123 34 stand pipe PN PC 63203 6 Center tank drain assembly 2 G Valves 40 drain valve PN PC 01211 L Refer to Chapter 20 10 07 Fuel Lines Airframe Department Figure 14 Sheet 1 PAGE DATE 1 June 1997 CHAPTER 28 PAGE 25 FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 MAINTENANCE PRACTICES Fuel Line Replacement LW MS29512 6 LW AN919 6 LW 76304 LW 18265 LW 77418 LW MS20822 4 LW STD 148 LW 12604 LW 12098 0 200 LW 12098 0 170 LW
6. Legend 1 control rod attachment bolt shut off valve attachment bolts shut off valve torque rod attachment bolts control rod consisting of torque rods control handle control rod handle tA BW N castle nut Shut Off Valve and Control Rod Removal Installation Figure 11 Sheet 1 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 20 FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 UM 1 control rod attachment bolt shut off valve attachment bolts shut off valve control rod consisting of torque rods 7 2 3 4 torque rod attachment bolts 5 6 control handle 7 control rod handle Shut Off Valve and Control Rod Removal Installation Figure 11 Sheet 2 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 21 EXTRA FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 28 21 03 Gascolator Removal Installation 1 Drain the fuel system per Chapter 12 10 02 Disconnect the fuel lines on the gascolator Loosen the knurled nut 1 Remove the mounting bracket 2 Remove the fuel reservoir 3 and the sealing ring 4 Remove the strainer 5 and the gascolator cover 6 OQ tA A 92 N Install in reverse sequence of removal Gascolator Removal Installation Figure 12 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 22 EXTRA FLUGZEUGBAU Gm
7. 1 Stripping solvents can be toxic and volatile Use only in well ventilated areas Avoid physical contact with sol vent and do not inhale vapors Keep solvent containers covered when not in use 4 Clean the sealing surfaces mechanically and with Acetone If the flop tube assembly has to be replaced install a complete new assembly Part Number PC 63203A32 5 Install in reverse sequence of removal after applying Loctite 577 to the flop tube fitting thread Flop Tube Removal Installation Figure 5 PAGE DATE 15 December 1999 CHAPTER 28 PAGE 11 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 MAINTENANCE PRACTICES 28 11 03 WARNING Wing Tank Inspection Door Removal Installation 1 Drain the fuel system per Chapter 12 10 02 2 Disconnect the ground bonding leads and if necessary LH wing tank the electrical wiring of the lever type tank unit 3 3 Remove the inspection door bolts 4 Remove the inspection door flange 1 5 Push the inspection door 2 into the tank then turn and remove Stripping solvents can be toxic and volatile Use only in well ventilated areas Avoid physical contact with sol vent and do not inhale vapors Keep solvent containers covered when not in use 6 Clean the sealing surfaces mechanically and with Acetone 7 Install in reverse sequence of removal after applying 3M Brand Fuel Resistant Coating 776 3M St Paul USA to th
8. 12798 48242 LW 12799 68322 LW MS20822 6 8 SEAL Oil 5 64 dia sect x 15 32 I D REDUCER Flared tube 1 4 tubing ELBOW Adjustable 45 NOZZLE Injector MANIFOLD ASSY Fuel ELBOW 1 4 tube amp 1 8 90 NIPPLE Union 1 8 NPT NIPPLE 1 8 tube to 1 8 NPT TUBE ASSY Fuel manifold to nozzle cyls 1 2 5 6 TUBE ASSY Fuel manifold to nozzle cyls 3 4 HOSE ASSY Fuel injector to fuel manifold HOSE Fuel pump to injector ELBOW 3 8 flared tube amp 1 2 NPT 90 fuel pump outlet Fuel Lines Engine Department Figure 14 Sheet 2 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 26 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 28 40 00 INDICATING Refer to Figure 16 For fuel contents indicating the center tank is equipped with a tubular tank unit 1 and the left wing tank with a lever type tank unit 2 They transmit the fuel level to the respective fuel quantity indicators at the lower rear instrument panel 3 In contrast to the fuel quantity indicator of the center tank the one in the wing tank is not adjustable If the indication is inexact the float wire of the tank unit has to be adjusted refer to Chapter 28 41 05 boost pump circuit braker fuel quantity indicator and RPM indicator circuit braker a 0000 ai boost pump switch center tank wing tank fuel quantity indicator Lower Rear Instrument Panel Figure 15
9. EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 Chapter 28 Fuel PAGE DATE 31 January 1995 CHAPTER 28 PAGE 1 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 Chapter 28 00 00 28 01 00 28 01 01 28 01 02 28 10 00 28 11 00 28 11 01 28 11 02 28 11 03 28 11 04 28 11 05 28 11 06 28 11 07 28 20 00 28 21 00 28 21 01 28 21 02 28 21 03 28 21 04 28 21 05 28 40 00 28 41 00 28 41 01 28 41 02 28 41 03 28 41 04 28 41 05 TABLE OF CONTENTS Titl GENERAT tere Ue 3 MAINTENANCE PRACTICES 6 Betueling Defuelimng xod one OR e em dei die 6 Reduction of Fuel Tank Vapor Hazards 6 STORAGE o 8 MAINTENANCE PRACTICES 10 Center Tank Removal Installation 10 Center Tank Flop Tube Removal Installation 2 222 4 Wing Tank Inspection Door Removal Installation ___ 12 Wing Tank Outlets Removal Installation 222 13 Filler Neck Removal Installation 2 14 Filler Neck Sealing Lip Replacement 14 Ventilation Line 15 DISTRIBUTION 17 MAINTENANCE PRACTICES 19 Shut Off Valve and Control Rod Removal Installation ties n 19 Shut Off Valve Lubrication ss sss 19 Gascolator Removal Installation 00 22 Electrical Boost Pump Removal Installation 23 Fuel Line Replacement eee 24 INDICATING 27 MAINTENANCE PRACTICES ____________ 29 Fuel Quantity Indicator Removal Installation 22 2 29 Fuel Quantity Indicator Calibration Center Tank 30 Tu
10. PTER 28 PAGE 7 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 28 10 00 GRP tank shell Tubular type tank unit Connection tube Drain assembly Flop tube assembly OQ t A QU Ventilation hole STORAGE The center acro tank 1 refer to Figure 4 Page 9 incorporating an inverted flight fuel supply system is mounted in the fuselage just behind the firewall Fueling the center tank is by means ofthe wing tank filler caps 13 and the fuel lines connecting the tank systems For leak detection the center tank is furnished with a GRP tank shell see Figure 3 below In case of leakage blue colored fuel is shining through The root section of each wing in front ofthe main spars forms an integral fuel tank of approximately 150 cm 59 length 8 Each wing tank has a 2 diameter filler cap 13 for gravity fueling From Serial No 59 sealing lips are additionally installed at the filler necks inside the wingtank For sealing 3M Brand Fuel Resistant Coating 776 3M St Paul USA has been applied to the inside ofthe wing tanks For lightning protection reason the shell in the area of the wing tank has an outer layer of carbon fiber with incorpo rated aluminium thread 9 Center and wing tanks are grounded The centertank is connected with the wingtanks ina gravity feed system Each tank is provided with an alu ventilation tube a b for adequate venting The ventilation tubes are interconnected to a main tube c
11. afety device against failure ofthe engine driven pump The boost pump switch is located on the instrument panel in the rear cockpit see Figure 15 A shut off valve 7 15 located behind the firewall on a separate support A control rod 14 connects the shut off valve to the front and rear control handles 15 From Serial No 59 the shut off valve has been replaced by an 3 port selector valve of which the bottom port has been closed by means of an AN913 6D fitting The other ports are marked by the letters E for to Engine and T for to center Tank At the same time the control rod design has been modified to ensure proper installation of control rods and handles However the removal installation proce dures are the same in both cases A gascolator 6 with drain 5 18 installed between the fuel shut off valve and the auxiliary fuel pump at the fire wall engine side A second drain 2 is located at the lowest point of the fuel system the bottom of the center tank PAGE DATE 15 December 1999 CHAPTER 28 PAGE 17 DISTRIBUTION EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 Mi E EUN soul ong Sur JJO nus 10 2 02828 uwap 10 2 02828 dund dund 35009 xuej ut 8 71 ST VI e TN I 7 4 Distribution F
12. bH SERVICE MANUAL EXTRA 300 MAINTENANCE PRACTICES 28 21 04 Electrical Boost Pump Removal Installation 1 Drain the fuel system per Chapter 12 10 02 2 Disconnectthe plug and the fuel lines on boost pump 3 Loosen the clamping device screws 1 4 Remove the boost pump 2 5 Install in reverse sequence of removal Boost Pump Removal Installation Figure 13 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 23 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 MAINTENANCE PRACTICES 28 21 05 IMPORTANT NOTE Fuel Line Replacement Refer to Figure 14 The letters A G and 2 refer to the markings of Figure 10 General information concerning hoses and fittings you find in Chapter 20 10 07 08 If replacement of fuel lines passing the firewall 15 neces sary renew the sealing of the rubber grommet grooves and gaps at the engine side of the firewall Use PRC 812 Products Research amp Chemical Corporation USA firewall sealant Cover the fuel lines of the engine de partment with AEROQUIP AE102 fire sleeves as per Chapter 20 10 07 Use only hoses tubes and fittings as required in the fol lowing PAGE DATE 31 January 1995 CHAPTER 28 PAGE 24 EXTRA FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 Fuel Line Replacement Wing tank to center tank connection A Fittings and washers inside wing tank a Wing tank inspection door 1 AN491
13. bular Tank Unit Center Tank Removal Installation 22222 2222 30 Lever type Tank Unit Wing Tank Removal Installation 22222 2 22 31 Float Wire AGUS eeu eec 32 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 2 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 28 00 00 GENERAL The fuel system refer to Figure 1 Page 4 consists of one center acro tank 1 with a drain 2 on its bottom two wing tanks 8 a shut off valve 7 a gascolator 6 with drain 5 an electrically driven auxiliary pump 3 and an engine driven rotary pump 4 On the lower rear instrument panel 9 one fuel quantity indicator for the center tank and one for the wing tanks the switch for the boost pump and circuit breakers are installed see Figure 14 Page 23 The electrical wiring is shown on Figure 2 Page 5 PAGE DATE 1 June 1996 CHAPTER 28 PAGE 3 GENERAL EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 poued juoumusur 1 ue Sur JJo 3nus JOje ooses urap Joje ooses ourguo 35004 TN lt urep 1ojuoo yur 19199 4 28 Fuel System Figure 1 PAGE DATE 31 January 1995 FLUGZEUGBAU GmbH GENERAL SERVICE MANUAL EXTRA 300
14. e sealing surfaces inspection door and tank root rib wing tank tank root rib Ps RU Inspection Door Removal Installation Figure 6 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 12 EXTRA FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 Filler Neck Removal Installation 28 11 04 Wing Tank Outlets Removal Installation 1 Remove the inspection door 1 refer to Figure 7 per Chapter 28 11 03 2 Remove the union nuts 2 and the elbow tubes 3 3 Remove AN 924 nut and washers and remove AN 832 fitting WARNING Stripping solvents can be toxic and volatile Use only in well ventilated areas Avoid physical contact with sol vent and do not inhale vapors Keep solvent containers covered when not in use 4 Clean sealing surfaces mechanically and with Acetone 5 Install in reverse sequence of removal after applying 3M Brand Fuel Resistant Coating 776 3M St Paul USA to the sealing surfaces fitting to tank root rib Ensure that the outlet end positions are in the upper resp undermost edge of the wing tank see Figure 7 below View from inside the wing tank Wing Tank Outlets Removal Installation Figure 7 PAGE DATE 15 December 1999 CHAPTER 28 PAGE 13 EXTRA FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 28 11 05 Filler Neck Removal Installation Completely drain the fuel system
15. he other bolts AS Y and the ground bonding lead 3 4 Lifttubular tank unit and sealing ring over the threaded rod mmm 111 I Remove the threaded rod and turn out the slotted retainer ring 2 CY CA WARNING Stripping solvents can be toxic and volatile Use only in well ventilated areas Avoid physical contact with sol vent and do not inhale vapors Keep solvent containers covered when not in use PAGE DATE 31 January 1995 CHAPTER 28 PAGE 30 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 MAINTENANCE PRACTICES 28 41 04 WARNING 6 Clean sealing surfaces mechanically and with Acetone 7 Install in reverse sequence of removal after applying 3M Brand Fuel Resistant Coating 776 3M St Paul USA for sealing to both sides of the sealing ring Lever type Tank Unit Wing Tank Removal Installation refer to Figure 17 below 1 Disconnect the electrical wiring 2 Remove LH inspection door refer to Chapter 28 11 03 3 Remove tank unit bolts 1 4 Remove the retainer ring 3 the tank unit 4 and the sealing ring 2 L Inspection door Lever type Tank Unit Wing Tank Removal Installation Figure 17 Stripping so
16. igure 10 CHAPTER 28 PAGE PAGE DATE 15 December 1999 18 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 28 21 00 28 21 01 28 21 02 MAINTENANCE PRACTICES Shut Off Valve and Control Rod Removal Installation Referto Figure 11 Sheet 1 resp Sheet2 from Serial No 59 1 a A Q N Drain the fuel system per Chapter 12 10 02 Disconnect the fuel lines on the shut off valve Loosen the control rod attachment bolt 1 Loosen the shut off valve attachment bolts 2 Remove the shut off valve 3 Loosen the torque rod attachment bolts 4 Disassemble the torque rods 5 Install in reverse sequence of removal Ensure that all control handles 6 7 are installed in the same direction like shown in Figure 11 Sheet 1 up to Serial No 58 Use LOCTITE when installing the attachment bolts of the new type shut off valve Shut Off Valve Lubrication Up to S No 58 Refer to Figure 11 1 2 Drain the fuel system per Chapter 12 10 02 Disconnect the control rod following the steps 3 6 and 7 of Chapter 28 21 01 Disconnect the control handle 6 Loosen and remove the castle nut 8 Lubricate with FUELUBE FLEET SUPPLIES INC Cleveland USA Screw up the castle nut Reinstall the control handle 6 Reinstall the control rod PAGE DATE 1 June 1996 CHAPTER 28 PAGE 19 FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 MAINTENANCE PRACTICES N Q
17. lvents can be toxic and volatile Use only in well ventilated areas Avoid physical contact with sol vent and do not inhale vapors Keep solvent containers covered when not in use 5 Clean sealing surfaces mechanically and with Acetone PAGE DATE 31 January 1995 CHAPTER 28 PAGE 31 EXTRA FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 6 Install in reverse sequence of removal after applying 3M Brand Fuel Resistant Coating 776 3M St Paul USA for sealing to both sides of the sealing ring and the grooves inside the tank 28 41 05 Float Wire Adjustment Remove the lever type tank unit per Chapter 28 41 04 2 Remove the float wire and bend it in form like shown in the following Figure 18 L 20mm 10871 60 247 I 125mm 15071 Float Wire Adjustment Figure 18 3 Reinstall the float wire observing the distances shown in Figure 19 pay attention to a proper alignment and tighten well the attachment bolt wing tank uper 5 P 82mm 3 2 9 120mm 4 7 Float Wire Installation Figure 19 4 Reinstall the lever type tank unit per Chapter 28 41 04 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 32
18. ne Replacement Center tank ventilation assembly a Fittings and washers 1 AN816 4D PN PC 00159 2 ANS18 4D PC 00161 818 6D PC 00160 819 42 T PC 00860 819 60 00162 824 60 PC 00168 832 60 00170 894 6 4D PC 00154 924 60 PC 00177 N960 C916 N PC 01852 22 Wing tank to wing tank connection b 3 rg gt 2 inside wing tank 4 wing tank inspection door 4 S Z Jg 25 gt Z as Z Jg 25 Jg 22 o d zz 10 gt Y Tubes 30 strainer tube PN PC 63202 2 31 alu tube 5052 0 03 8 inch PN PC 00122 32 alu tube 5052 0 01 4 inch PN PC 00123 33 vinyltubing PN PC 01607 Connection tubing assembly c 2 Ventilation Lines Figure 9 PAGE DATE 31 January 1995 CHAPTER 28 PAGE 16 EXTRA FLUGZEUGBAU GmbH SERVICE MANUAL EXTRA 300 28 20 00 DISTRIBUTION Refer to Figure 10 Flexible hoses A F connect the particular components ofthe fuel system From Ser No 66 the drain line G has been added To prevent filling the wing tanks during aerobatic flight the fuel hoses A connecting the wing tanks 8 and the center tank 1 are installed crosswise In addition to the engine driven fuel pump 4 an electri cally driven boost pump 3 having sufficient capacity to feed the engine at take off power is fitted as a s
19. per Chapter 12 2 Remove wing tank inspection door per Chapter 28 11 03 3 Unscrew filler neck lock ring 4 Figure 8 with seal ing lip 5 using a tool as shown in Figure 8 4 Remove filler neck 3 with filler cap 1 and O ring 2 WARNING Stripping solvents can be toxic and volatile Use only in well ventilated areas Avoid physical contact with sol vent and do not inhale vapors Keep solvent containers covered when not in use 5 Clean all sealing surfaces with Acetone 6 Install in reverse sequence of removal after applying 3M Brand Fuel Resistant Coating 776 3M St Paul USA to the sealing surfaces wing filler neck 28 11 06 Filler Neck Sealing Lip Replacement 1 Carefully drill out the body bound rivets 7 Figure 8 2 Install the new sealing lip driving in new washers 6 and body bound rivets PAGE DATE 31 January 1995 CHAPTER 28 PAGE 14 EXTRA FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 Tool Filler Neck and Sealing Lip Removal Installation Figure 8 28 11 07 Ventilation Line Replacement Refer to Figure 9 Page 14 Small letters a c refer to the marks of Figure 4 General information concerning fittings you find in Chap ter 20 10 08 NOTE Use only tubes and fittings as required in the following PAGE DATE 1 June 1995 CHAPTER 28 PAGE 15 EXTRA FLUGZEUGBAU GmbH MAINTENANCE PRACTICES SERVICE MANUAL EXTRA 300 Ventilation Li
Download Pdf Manuals
Related Search