Section 7 FUEL SYSTEMS Lp. gas surPLy sysTEM WARNING: THIS GAS PIPING SYSTEM IS DE SIGNED FOR USE “OF LIQUIFIED PETROLEUM “GAS. ONLY. D0 NOT Connect NATURAL GAS TO THIS SYSTEM, Securely cap inlets) when not onnected forest. After turing on Sm, ‘cept efter normal sontanor replace Imant, test gs piping and connections to Splines for eakon with Soap watae ot bly solution. Bo not uae products COPPER TUBING ‘Type L copper tubing is used forthe LP. as spy systems exceot for necesary sections of black pipe {To siire aan free system the copper lines shoul be repaired or replaced atsording tothe crecors inthis Seaton: Only far type tings re recortanced FLARE TYPE FITTING ASSEMBLY Fer Figure 7-1. When repicing o repairing cooper tubing, use the same type ofreplcamas ings thet were oll staid Inve eytem. In some cet union ean bead to 8 lng to facie cesar removal ond rplcament. Ut nly re type ting. WARNING: Do not we comprston fing connections these can rol in leakagn the line ‘xpoted to vibration or impact condos 1. Cut capper tubing to prope lena 2. Install ar nt over copper tubing 43, Ream out and of cope tube Face end of copper tube wing propar flaring WARNING: Before lighting apptianess, pressurize fe ane check ftng for loo witha mil 039 roliion LP. GAS TANK — FRAME MOUNT Feterto Figure 72, enlace 2. Ramove gs spaly line connection at tank NOTE! iting asa et hand tre 3. For maximum safety, place support under git "an before unatting tank rom rae. 44, Remove Bolte thet hold tank rackets to frame, 5. Remow wane 8B. Replace ane reversing ape through WARNING: Fill tank with LP. Garand test for est ‘ith soapy wate okton, NOTE: Purge new tank and add deicing solution bafore puting in Us. See propane dealer or stp. LP. GAS REGULATOR 1. Shut off gas sup 2, Remove eopoa in from regulator by removing fae feng, Unscrew tone adaptor ax Fg from tne NOTE: This iting has left hand then Remove relator (rom tank nd move aap ting from rogultor4 Installnew regulator by reversing ape through WARNING: Turn on ges. Check for gat like. Apply soapy water to. connectlons of ine and watch for bubbles. Recheck Menge i bible cae NOTE: ‘After isting gps container and/or regulator, ‘urge xt lina By turing on gs ange burner ‘St ae ean ba fied ane bres with an pon ‘ame WARNING: No ga nes shal be concealed inside wal, floors or partitions. When ga line rund {through metal bulkhead of sel fame the line should be protected with a rubber LP. GAS REGULATOR ADJUSTMENT NOTE: Adjusoment procedure requies 2 people, ont fon outside of motor home and the other ‘re NOTE: anlar or sevice contri aquppad to make all regulator adjurtents and to completely hoc, 1. Remove aclusting cap on rouator (Ours) 2. (Inside) Hoole up LP. gs pressure tester accor ing to tse instructions. ‘3. Aajus resura at reglstorby tuning equator ‘ajusing screw to schiow 11 to 12h. water foluma pressure on test. 4. Replace regulator adjusting sew cap. (GASOLINE SYSTEM WARNING: Dodge gat tanks. Do not overfil tank at ‘cas gue may low eu of vont FILLeWeE Refer 0 Figure 7.3. Remove gasaline fil from outside of motor home. See Section 2, Figure 223. 2. Remove extension fom ilo git tank by ‘emoving spproprnt attachments tnd samp 2. Ravers erder for installation, GASOLINE TANK ~ AUTOMOTIVE CHASSIS MOTOR HOME Refeto_ manufactures cass manual for oxigel ‘sulpmen nk mounting information. GASOLINE TANK — CLASS “A” MOTOR HOMES Rieter 0 Fore 73, 1 gas tank gauge is inoperatie, check for shorts in wie ‘ani leads from ga gauge to sanding unt or heck Tor 1 ahort in the sending un lected inthe op of te 5 fant See Clctcal” Secon for schematle drawing. 1 ge splanes back wil fling tank, check to make Stank ie vented propel Removal 1 Tur of ignition switch, 2, Inauation fos around tank may requ rev: fa remove nk 3. Brain 1 Disconnect ant tank fil out and fil pipe ‘xterlon by removing adjstole clamp ‘and Spproprinte attachment Remove stepe or unbolt tank fom fam ‘With ® hyarulie ack, dep tank down unt ‘e leade fromthe. sending unt, pllation ontol lines and the gi ine ae vise Disco act fuel ies. Nowe postions for reinialaton, 1, frst new tank by covering steps 5 throug 1. pe NOTE: Before insaling naw tnk, plug filer spout ‘with sloth of sal with tape to prvent drt ‘fom entering tank during inetalaton. WARNING: Some Dodge cass have plastic gs tanks. ‘These tanks are Installed by the chasis manufacturer. Refer to chess monte. {ures servic manual hon ‘servicing thet tank Improper instalation can fnise the cane to rupture when the ‘hice en motion. GASOLINE TANK = AUXILIARY Refer to Figure 7-4 Irealiton Fe Turn off ignition switch, 2, Chesk for good ‘ont Toction with adequate ‘oom for rstalation. aaeLectmicaL Line 10 FUEL cause AAUKILLARY FUEL LINE Foueneraron LENT LINE TERMnWaTES INSIDE FRAME RAIL SENDER Catt EOMNECTION 3. Sales tk sf Flocaon 44 Solace proper taitanr tank sending unit for connoctng to ful ga ‘Dodge Ford & nt! = 78 om Chevrolet & G:.C. = 90 oom 5. tna snding unit into tank. Sev fo! level sander onic insalaten in thie ction, 6, Install marsal Say valve a a postion convene lant to aver. Soe 2way vali Inslaton Im this sation, I lst slenoid syst tobe ‘ied, mount slenald wae (1 requled. to Dodge, 2-for ‘Comolet) or. vales on frame adjocent to existing fuel es 7. epi fue lines un rubber hos, hosa lanes, fol tubing and boned connector as required, 8. For Califor vehicle, ial appropriate emis Son ontrl equipments required. Refer to Emission conto in i setion 9. Rae tank into approximate poston with doulike NOTE: Before isang sxiiary tank, plug filer Spout or tape opening to prevent det fom tering tank during intlaon. Connect fuel ines and acca! eto sender FIGURE 73 Tpke pn nk sembly Wen tings are connected, finish ening tank info lestion soo sare rth ape oF bolts, 10. From tank fill pipe opening, use connecting how and determine fill pening location onside heehee 11, Gat opening and instal fa! fil bezel o oekag compartment door Refer to Figure 7.3 12, Install Hil howe and sneure wth howe. clamps. 13, Tank venting — efecto Figure 7. When fil Spout I provided with vot line tachment, ran ‘bbe owe from fil tank vet oranda vere. When tani not eauipped with sparte ver, fun vent hos from senar vent to treme and Into inside of frame ral Secure with mounting ame, 14, het! solenoid systems — etal tank snlactor ‘ith in dah and wire to valves using 18 gouge wr. See Figures 76 and 72. 15, with gmotne and ene’ vsuy for lak EVAPORATION CONTROL SYSTEM GENERAL INFORMATION Motor Home Chassis desied forsale and use inthe State of California are equipped with an evaporation contol system (ECS) QO '“The function of the evra aio Wate I 1 Erne cisone of sie as en he {nk and carburetor ino the. smpspeg When foe Suomen bocca ia eee bree ‘he vapors pos through went hose or Tubes chr ‘ou aniter where they ae temporary held unt they ‘an be drawn ino the Intake manifold hen the engine IPruning A tube terns dome szenBly ontop of he fost tank lends fo charcoal canter. Evporaed ful Xapor from the fel ane flows arugh his ube to te ‘The Evaporation Cantil System should not require any maintenance other than te Sarcoal enter fier ‘eplocment, EMISSION CONTROL — AUXILIARY FUEL ! ‘TANKS ~ CALIFORNIA s Refer Fours 7-4, . 4 Ausilry fuel tanks for:motor homes operating in Eatormls tequie thet vent ins bo connected to ‘hacen canister syst, Bete to Figure F8.Caltore tart be prowided on te bait of one ean por 0 fallons. of tus When two tanks ae aed athe Sombinad capacity ‘exceeds 60 gallons but not 100, Gulls, two canisters ara roqird. Fuel cap for thet Systeme mute contin beth vacuum and peste relies Cops ar refered to ae ECS type fl ap. FIGURE 74 Tpke one tank Calton amin contol stm (CS) 1FUEL VALVES vai tomto0a ie ‘Auxliagy tank senders ee provided with three outlets. ve p sdono0) Say ee erie eat tee cat MANUAL VALVES eee ‘hoses can be conhected to proper sender outlet. Tube eter to Figures 75, 76, bien sxcenling deepectinto tank is geotne sippy for vebele leplcement ra. Tubs ending at top Mounting pst efor vert 1. From ‘inside vehice remove screw attaching rretun line. Remaining tb extending to Seprox handle to valve and emove hand. Totaly 3/4" of tank depth i supply for auxary 2. From under yah Toon ete Slaps adeno fore to prevent al loess they ee moved 3. Remove two sews attaching vale t vein FUEL GAGE TANK SELECTOR SWITCH (2WAY) 44. Remove barbed feiegs ftom valve snd insall Installation Inte replscarant va Ate Fie 75. 5. Tolnstal reverse procedures 3 through 1 Disconnect postive battary trina. es 2. Determine ost on ih fr mtn etch {and abel: Be sure theres asoqute room behind ash for switch and wires. SOLENOID VALVES 3. Del 17" plot hot, Fate Fes 77,78 4. Dil 1/2" hoe for ate, frm off igition: 5. Locate wir leading from main tnk to ful 2. Remove seco rom ve. ‘Gattis wire a locaton under dat Cosmet 3. Loosen, hose clams and remove hose from wines shown i Figie %6, Use nme 18 vale, Plug tank fas to prevent fuel loses they sr removed. 6. Moore toate switch Into hol. Adust 0 that 4. Remove two stews attaching valve to vehicle: ‘proninealy Witind of toed Nodon oe 5. Install wr vale by revrong above stpe 4 fonds through dat ral abel and ee trout EA fans 7 connect botry. Turn on itn witch and ‘heck gape operation. FUEL LEVEL SENDER UNIT DUAL TANK CONTROL sySTEMS Rete to Figure 7.9 Ping & Wiring Disgeams Replacement Sering unit mut be matched tothe fuel gi 29d ination of components are covered a india! ove te prope rsisares to avoid dame fo the estar ae She uni in the Insument curr. GC. ad Gevroter reauire unt Raving 90" ohm reastance. Ford, Dodge or moraonal uns que eres ‘with 78 ohm resinanca NON-RETUAN SYSTEMS Tum af inion switch, witeu 2. Remove fel tank, Refer to tank emavalin this” Refer to Figure 75 ‘ection. 1 Electrical Solenoid Vabe 2. Remove srews etching sender to tank Mee non 4, Remove defectie ander and replace gasket. 5. Install replacement sender and. atach with 6. Reval tank evan NOTE: Senders must be wounded. Ground wire must” Refer to Figure 78 run fom frame fo srew searing wandr to # Electrical Solenoid Valves {ank oro round connector on sender Retort Figure 7.8 76 oOSTRIP MRE Enos 4iNCH ——— FIOURE 7-5 Tpit nner sto inant)re, ate ie SER fe PUM ‘CONNECTOR 1 tere [— surcn ro ruse ck ren a NOTE: INSERT wine onene Sarr ing ovoen ti Soiree HGURE 77 Ti nonce tem tee sei aexectaie soLenoio \ ELECTRIC SOLENOID all Ne FIGURE 78 Type een ten er! leo) | {a ce