PARTS CATALOG LYCOMING MODELS 0-435-A and-A2 AIRCRAFT ENGINES LYCOMING-SPENCER DIVISION — 4/CO MANUFACTURING CORPORATION WILLIAMSPORT 38, PENNSYLVANIA, U.S.A. LYCOMING-SPENCER Printed im U. 8. A. Division—Aveo Manufactaring Coro.LYCOMING MODEL 0-435-A AND 0-486-A2 AVIATION ENGINES TABLE OF CONTENTS INTRODUCTION . HOW TO USE THIS CATALOG INSTRUCTION FOR ORDERING PARTS ILLUSTRATED PARTS SECTION NUMERICAL PARTS LIST NUMERICAL STANDARDS PARTS LIST SERVICE TOOLS LIST NUMERICAL OVERSIZE AND UNDERSIZE PARTS LIST ALPHABETICAL PARTS LIST il Page iii iii iii 26 31 32 35LYCOMING MODEL 0-435-A AND O-435-A2 AVIATION ENGINES INTRODUCTION This catalog is divided into eight separate and distinct sections, making it a simple matter to identify any part used on the Lycoming model 0-435-A and O-435-A2 air- craft engine. The following paragraphs describe each Section of the catalog and ex- plain the method of using it THE ILLUSTRATED PARTS SECTION consists of eight exploded views of the baste Lycoming 0-435-A and O-435-A2 aircraft engine The first view consists of crank- shaft and parts that are closely related to it; the second illustrates the crankcase and its associated parts, while the third shows the reciprocating parts, fourth 1s the cyl- inder, fifth is oil sump, sixth and seventh illustrate the accessory housing, number eight lists the ignition harness and priming system. Although these views do not show every part of the engine, they nevertheless will be helpful in locating and identifying the various subassemblies that make up the engine. However, the user must not use this section to identify the component parts of any subassembly; for that purpose the numerical section should be consulted THE NUMERICAL PARTS LIST SECTION contains the part numbers of every part used on the Lycoming model 0-435-A and 0-435-A2 engine. The part numbers are arranged in numerical order, and following each part number its correct name and quantity usedis given. Ifthe partisa major sub-assembly; the quantities, part numbers, andnames of its component parts are listed. If a part is not a major sub-assembly, but rather an independently functioning part, or a component of a subassembly, its proper name along with a description of its function is given Certain parts, marked with an asterisk (*), are not listed separately but only withthe subassembly in which they are used. These parts are not obtainable separately, but are fabricated with the unit of which they are a part NUMERICAL STANDARD PARTSSECTION is similar tothe Numerical Parts Section, excepting only that the part numbers are prefixed by the symbol ''STD."' This symbol indicates that the part is a Lycoming standard partand is carried in-stock at all times, and is not necessarily peculiar to this particular engine model. These standard parts include such items as nuts, washers, screws, and seals. They are not listed separately in the Numerical Parts Section, but are included with the sub-assemblies of which they are a part SERVICE TOOLS--This section consists of a list of such tools as may be required to service the engine. These tools may be purchased as a set or an individual items. NUMERICAL OVERSIZE AND UNDERSIZE PARTS SECTION--This section consists of anumerical list of such parts asare available in sizes other than nominal or standard sizes. The list states the part number, name, nominal size, function of the part, and ite deviation from standard size ALPHABETICAL PARTS LIST SECTION--This section lists all the parts contained in the Numerical, Illustrated and Numerical Standards Sections of the catalog. The parte are listed by name, in alphabetical order, with the first letter of the noun as the hiiLYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES index letter. A part is not listed in this section ifit is furnished along with anassembly and is not available as an individual part HOW TO USE THIS CATALOG If neither the name nor the number of the part is known, find the part or the sub- assembly of which it is a component in the Illustrated Section. The number of the part, or of its assembly, can then be determined. Find this number in the Numerical Parts Section and determine if it is obtainable as listed or if it must be purchased as part of an assembly, in which case the number of the assembly must be used when ordering. If only the name of the part is known, consult the Alphabetical Section of the catalog and find the correct part number. Then, using this part number, consult the Numerical Section or the Numerical Standards Section to ascertain the quantity used per engine. If the part number is known, it maybe found in either the Numerical Section or the Numerical Standards Section unless it is a component of an assembly. If such is the case, the Illustrated Section should be consulted to determine the part number of the assembly of whichitisa component, The part number in question will be foundunder the assembly part number in the Numerical Section. INSTRUCTIONS FOR ORDERING PARTS. Always, when ordering parts, state the part number, its correct name, and quantity desired. Inaddition, state the complete model number of the engine and the serial number of the engine. This information will be found onthe Name Plate which is attached to the crankcase. Unless credit has been established with Lycoming Division, The Aviation Corporation, all parts will be shipped C O.D. or with sight draft attached tobill of lading on freight shipment. iiLYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES “ASSV 60069 = zz0s9 -ASSY £2089 é ze0s9 Va Losor ie 169-15 0089 69699-80159-—) L8ISp> > } 2 eeb09 2h $ vELg9. a 61-d8¢. — ‘ASSV 60899 assy 08999 g9899 2199 Figure 2 - Crankcase and Related PartsLYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES 67432 65663, 62916 65664 62915 66802 67540 6686! 66584 62319 60311 $0103 SZ 60378 “ ZA BO > tae 603i 65819 ————( 60007 61476 65820 61662 ~ i) sTO-e72 = STD-543 Figure 3 - Reciprocating Parts 3LYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES STD4412: STD-I60 ra 61246 a 60193 Assy, 60009 60398 65442 a 3S 60480 65567 ASSY. 60481 65427 60482 65441 66529 s0o28: 60401 —— oz 66610 66681 ASSY 60053 65006 $TD-700 60510 ASSY. 60053 STD-348 STD-347 STD-348 { STO-684 Kw 66429 66531 67498 Figure 4 - Cylinder Assembly 4LYCOMING MODEL, 0-435-A AND 0-435-A2 AVIATION ENGINES 66675 ASSY. Figure 9 - Carburetor and Sump Assembly 5LYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES. sz0s9 ‘ASSY il ASSY bbes9. ASSV 62899 i" ANI Hie O3HSINGN ¥ Py te kA me | jc [pe = 1zs99 gIS9o D gtsgg Fess ss999o vIs9o perso 2is99 196-018 ‘OLSNOVN HLIm G3HSINENS 096-01LS osess. Figure 6 - Accessory Housing and AccessoriesLYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES ‘ASSV £9999 9sgo9 89509 6L9-01S £02-01S bbl99 ‘S909 “‘ASSV 9PSS9 ASSV ISSO ASSv 6EE19 22¢69 Oi-ds2 gi-sz p9soo 2esoo BlEs9 ss90s Figure 7 - Accessory DrivesLYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES LENGTH "A" IN IN INCHES SS CABLE 10-250 st0-283 — 1982-4 J yess _ ES [ra wo. 61507 LENGTH] 1531 Figure 8 - Ignition Harness and Priming System 8LYCOMING MODEL O-435-A AND 0-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST No. Required Model Part No. Part Name -A -A2 425-8 Stud - 1/4-20 x 1 in long Right “rankcase 2 2 Left crankease. 2 2 Accessory housing . . 1 1 +25-10 Stud - 1/4-20 x 1-1/4 in, long Accessory housing . 2 4 4 +25D-10 Stud - 1/4-20 x 1-1/4 in long (area) Crankease : 1 1 +25-11 Stud - 1/4-20 x 1-3/8 in. long. Oil sump wnm mews 4 Bendix drive housing eye en ge 8 3 Accessory housing fae We « 5 5 Crankease . co aon we Bl 21 +25-12 Stud - 1/4-20 x 1-1/2 in. long Oil sump. 5 ee) 12 Cylinders Se : 12 12 +25-13 Stud - 1/4-20 x 1-5/8 in, long Right crankcase oe a) 9 +25-16 Stud -'1/4-20 x 2.1n long Crankcases + Em ot 4 +25-18 Stud - 1/4-20 x 2-1/4 in, long Crankeases so 2 +25-21 Stud - 1/4-20 x 2-5/8 in. long Left crankcase. Gena nnn 2 +31-10 Stud - 5/16-18 x 1-1/4 in. long Oi) sump. sy ge gy eB 2 431-11 Stud - §/16-18 x 1-3/8 in, long Cylinders co 1B 12 431-12 Stud - 5/16-18 x 1-1/2 in tong Right crankcase ~ 3 3 Left crankease 3 3 Aceessory housing 3 3 Onl sump 2 2 +31D-14 Stud - 5/16-18 x 1-3/4 in tong (aritiea) Oil sump yo eee ea & 4 +31-16 Stud - 516-18 x 2 in. long Accessory housing » 2.4 4 +31D-16 Stud - 5/16-18 x 2 in long (arinea) Accessory housing. Le 4 4 +38-13 Stud = 3/8-16 x 1-5/8 in. long” Right crankcase (Continued on next page) 12 12 + Indicates oversize or undersize parts are available 9Part No, 438-13 438-17 438-19 +38D-19 450-15 107-B 182-B 235 238 383-B 513-E 517-B 518 703-AA 715-C 857-BA 858-EC 861-GA 862-BA 1102 1182-K1 LYCOMING MODEL 0-435-A AND O-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST No. Required Model Part Name -A -A2 Stud - 3/8-16 x 1-5, 8 in, long (Continued) Left crankcase 12 12 Stud - 3,8-16 x 2-1/9 in, long Accessory housing a 2 2 Stud - 3/8-16 x 2-3/8 in, long Right crankcase Soe 4 4 Stud - 3/8-16 x 2-3/8 in. long (drilled) Right crankcase : . 3 3 Left crankcase : ea 1 1 Stud - 1/2-13 x 1-7/8 in long Right crankcase : 6 6 Left crankcase 6 6 Bolt - Hex head, 10-32 x 2-7/8 in. long Baffle clamp : 4 4 Plug - Crankshaft oil seal Fo ed 1 Sleeve - Spark plug. 2 & 2 232 12 Gasket - Magneto . re) 2 Nut - Plain, 3/8-24 Cylinders : 24 24 Nut - Lock, thrust bearing a! 1 Ring - Thrust bearing oil retainer 1 1 (Discontinued beginning with engine #620-17 on -A) Seal - Thrust bearing - ol 1 (Beginning with engine #620-17 on -A) Eye - Lifting Right crankcase : Se oi 1 Left crankcase 1 1 Packing - Thrust bearing (Discontinued beginning with engine #620-170n-A) . . . 1 1 Cone - Propeller hub, front : . 1 1 Cone ~ Propeller hub, rear, : 1 1 Nut - Propeller hub retaining. =. 1 1 Ring - Propeller hub snap 1 1 Plug - Pipe, 1/8 x 3/8 in. long (socket) Right crankcase . Le 2 2 Left crankcase eG soe ee 2 Accessory housing. . soe woe 1 1 Cylinders Dk 2 (Four more required for Cylinders when Priming System is not used ) Spark plug - Auto-Lite SH-2K. 0... . | 12 2 + Indicates oversize or undersize parts are available 10LYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST No, Required Model Part No. Part Name A -Az 1421-B Cable - High tension - 5. AR AR 1540 Plug - Thermometer weil (Replaced by 62744) 1 1549-C Cap - Tachometer drive . 1 1 1573-C Nut - Spark plugumion. 2 2). 12 12 1675 Fitting - Flanged cable. za: de 12 1675-B Cone - Spark plug union (Replaced by saris). eo AD 12 1892 Spring - Cylinder baffle 2 oad 4 1892-M Loom - Priming line mF 4 4 8313 Gasket - Vacuum pump eee al 1 40507 Seal - Oil, 2-7/8 ID x 4 OD x 15/32 in, wide (Thrust bearing cap)(Replaces 715-C Hecianiag with engine 4620-17 0n -A). . 2. ee 1 45187 Gasket - Oil filler plug. nee ge ge a gh 1 45786 Gasket - 3 bolt flange, 3- nas 1D Generator co ed 1 60007 Bolt - Connecting rod. saws ae yg od 12 60009 Key - Valve Sd 24 60023 Bushing - Engine support re ( 10 +60028 Guide - valve cee wy os 26 6 60053 Seal - Shroud tube Sm ee ey oe 24 60069 Flange - Intake pipe, upper © | 5 ss... 6 60080 Plunger - Oil relief am row ee g gb 1 60081 Plug - O1l relief valve 1 il 60096 Gasket - Fuel pump 1 1 +60118 Stud - 1/4-20 x 1 in Long (drilled) oil pump cover , 6 6 Used on accessory housing #66689 on -A 60130 Gasket - Oil strainer cover»... . ed 1 60131 Gasket - Two bolt flange, 1- sat D- Intake pipes - cB 6 60193 Rocker assy - Valve Se 12 12 Consists of © 1 60762 Rocker 1 60398 Bushing 60311 Plug - Piston pin Fee ee BD 12 60329 Shaft - Ol pump idler... oe gu ge 1 1 60354 Circlip - 5/16 ID x 1/32 dia. section . | oo 1 Required when using Fuel Pump and Drive + 60378 Ring - Piston, scraper (Discontinued on -A beginning, 6 6 with engine #554-17) 60398 Bushing - Valve rocker em eee swe eo TB 12 + Oversize or undersize parts are available * Parts not serviced as details uuPart No, 60401 60403 60404 60407 60422 60430 60433 60447 60448 60449 60480 60481 60482 60491 60510 60512 60517 60518 80532 60546 LYCOMING BL, O-435-A AND O-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST No. Required Model Part Name -A Shaft - Valve rocker cB Pin- Piston. 2 2 2. ee Cover - Oil screen Oil sump we es 1 Screen assy - Oil pressure * 1 60406 Screen, inner * 1 60086 Ring * 1 60405 Screen, outer Screen - Oil suction O11 sump. Cover - Vacuum pump . Required when not using Vacuum. Pump Plug - Oil filler oe Tube - Crankshaft oil center . Tube - Crankshaft oil end . ‘Tube - Crank pin oil. «o « 6 4 Rod assy - Push (short - 3groove). | |). Lal Consists of * 1 60477 Rod * 2 65005 Ball end Rod assy - Push (medium - 2 groove). . : . . .AR Consists of * 1 60478 Rod * 2 65005 Ball end Rod assy - Push (long- 1 groove). . . . . . .AR Consists of * 1 60479 Rod * 2 65005 Ball end Bonne A TOTAL OF 12 PUSH ROD ASSEMBLIES REQUIRED. SELECT FOR PROPER FIT. Nameplate (Replaced by 61548 beginning with engine. 1 # 554-17 on -A) Tube assy - Cylinder head oildrain . . . . . . 6 Consists of * 1 60509 Tube * 1 STD-1127 Sleeve * 1 STD-1126 Nut Plug - Accessory drive hole (Required when not using 1 Vacuum Pump) Gear - Starter. Gear - Bendix drive . Gasket - Accessory housing Shaft - Oi] pump . * Parts not serviced as details 12 ~Az 6 6 1LYCOMING MODEI. 0-435-A AND O-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST No. Required Model Part No. Part Name -A -A2 60547 Cover assy - Oil pump . 1 Consists of 1 60548 Cover 1 60329 Shaft 1 STD-714 Pin (Discontinued on engine #529-17, 831-17, 533-17, 534-17 and all from 538-17 on.) 80548 Cover - Oil pum? 1 (Discontinued beginning with engine #529-17, 531-17, 533-17, 534-17 and all from 538-17 on.) 60549 Plunger - Fuel pump coe Required for fuel pump 60555 Gasket - Starter weed 1 60556 Ring - Retaining. vacuum pump gear sd 1 Required when using Vacuum Pump or Drive 60564 Bushing - Bend:x drive gear Left crankcase ames 1 60568 Slinger - Vacuum pump oil a: if 1 Required when using Vacuum Pump or Drive 60577 Pump - Fuel (A.C Type A H Model G P. 9837 1 Replaced by 66910 beginning on engine #526-17. 60578 Gasket - Bendix drive housing weed 1 60603 Flange - Intake pipe, lower. “ 6 6 60616 Shaft - Bendix drive ses age 1 60621 Starter - 12 volt ee | 1 Deleo-Remy part No. 1109652 60622 Bushing - Generator gear . cm a gg 1 60654 Gear - Vacuum pump 1 1 Required when using Vacuum Pump or Drive | 60655, Gear - Vacuum pump drive 1 1 Required for Vacuum Pump Drive or Vacuum Pump Used only on Camshaft assy 66044 60710 Bracket - Upper baffle 1 1 +60729, Bearing - Crankshaft (Discontinued - Ending with | engine #492-17A. Replaced by 0610) : 8 60747 Impeller - Oi1 pump driven aye 1 60778 Impeller - Oil pump driving ae 1 +60810 Bearing - Crankshaft (Replazes 60729 beginning with engine #492-17A) , 3 8 61165 Seal - Oil, tachometer drive coe ee ed 1 61246 Gasket - Rocker box cover eam owe 6 6 + Oversize or undersize parts available 13Part No. 61247 61259 61260 61294 61339 61369 61370 61371 61372 61388 61389 61440 61476 61548 LYCOMING MODEL O-435-A AND 0-435-A2 AVIATION ENGINES. NUMERICAL PARTS LIST No. Required Model Part Name “A ~A2 Cover - Rocker box . - 6 6 Flange - Exhaust say ga 6 Carbon steel. May be used in place of 61260. Flange - Exhaust . 2 6 6 Stainless steel Regulator - Voltage « 1 Delco-Remy part No. 1118383 ‘To be used with 12 amp 12 volt Generator and negative grounded Battery only Gear assy - Crankshaft & starting ess @ Consists of * 1 61334 Gear * 12 STD-144 Rivet * 1 60515 Gear Generator - 12 volts-12ampere . . . . . 1 Delco-Remy part No 1101881 Cover assy - Oil pump (Replaces 66669 on engine. . 1 #829-17, 531-17, 533-17, 534-17 and all from 538-17 on -A) Consists of 1 61372 Cover 1 STD-714 Pin 1 60329 Shaft Body - Oil pump (Used on -A from engine #529-17, 1 531-17, 533-17, 534-17, and all from 538-17 on.) Cover - Oil pump. wee ee Regulator - Voltage 12V 2amp.. 5... 1 Delco-Remy part No 1118263 Used with 12 volt, 25 amp Generator and negative grounded Battery only Generator - 12 volt, 25ampere. . 2 0. 2. 1 1 Delco-Remy Part No. 1101882 Switch assy - Magnetic (Delco-Remy part No. 1909324) 1 Consists of * 1 60620 Switch * 2 STD-758 Washer * 1 60619 Connector * 2 STD-757 Bolt Rod assy - Connecting (Replaces 65820 beginning with 6 engine #540-17) Consists of * 1 60313 Rod 2 60007 Bolt 1 65819 Bushing 2 STD-872 Nut Name plate (Replaces 60491 beginning on engine. . 1 # 554-17) * Parts not serviced as details, 14LYCOMING MODEL O-435-A AND 0-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST No, Required MODEL Part No. Part Name -A -AR 61581-1 Tube assy - Primer (15 31 long - cylinder No. 5) 1 1 (Replaces 65339) 61581-2 Tube assy - Primer (11.69 long - inter cyiinuer) 2 2 (Replaces 65341) 61581-4 Tube assy - Primer (16.31 long-cylinder 3 & 6) .2 2 (Replaces 65340) 61581-7 ‘Tube assy - Primer {18 31 long - cylinder No 4) 1 1 (Replaces 65338) 61597 Cap - Sealing Priming line . teak 1 +61662 Bearing - Connecting rod fe RB 12 461631 Guide - Valve (alternate to 60028) . toe eo B 6 +81682 Guide - Exhaust valve (Alternate to 66529). . . . . 6 6 +62319 Piston (3 ring) Beginning with engine #554-17 (See note). 6 NOTE Engines with piston No. 62319 or 62719 must be serviced with Piston No 627198 individually or in complete sets. Piston No, 66584 (Page 19), being a 4 ring piston, must be serviced with Piston No. 66584 ifdividually or may be ser- viced with Piston No, 627195 ia complete sets. 62713 Cone - Spark plug union (Replaces 1675-B) . . . . 12 12 62719 Piston - (3 ring) alternate and interchangeable with 62319 in sets (See part No 62319). . 6 +627198, Piston - (3 ring) Service piston for 62319 or 62719 (See part No 62319) 62744 Plug - Thermometer well (Replaces 1540) . m oo i 1 +62915 Ring - Piston 2nd comp (Beginning with engine #554- 11). a 46 + 62918 Ring - Piston top comp (Beginning with engine #554- 17). ep eo 28 65006 Tube - Push rod shroud a sus 12 65007 Retainer - Shroud tube seal Right crankcase cone wr ms x 6 6 Left crankcase sos ot wee o B 6 65009 Tappet assy - Valve . Co CA 12 (Continued on the next page) ' + Oversize or undersize parts available 15Part No. 65009 65030 + 85042 65072 85073 85074 85078 65008 65099 65107 65114 86115 65116 85321 65330 65331 65347 65356 65366 85376 65377 65378 65398 LYCOMING MODEL 0-435-A AND O-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST Part Name ‘Tappet assy - Valve (Continued) . Consists of 1 85072 Body 1 65074 Socket 1 65073 Plunger Shim - Thrust bearing cap. Stud - 1/2-18 x 3-27/82 in, long Right crankcase . 2... Body - Hydraulic tappet. . Plunger assy - Hydraulic tappet | Socket - Push rod, Hydraulic tappet. Magneto - Shielded Scintilla Part No. 10-22580-3 type SF6LN-8 Cover - Fuel pump Required on 0-435-A when not using Fuel | Pomp Gasket - Oil sump Spacer - Stud, fuel pump (Required when not sing Fuel Pump) so : Pipe - Intake, No. 1 and 6 cylinders’ Pipe - Intake, No. 2 and 5 cylinders Pipe - Intake, No. 3 and 4 cylinders Gasket - Exhaust flange “ Clip - Primer line. . Clamp - 1-1/2 ID with 1/4 in, dia. offset” Priming line Cap - Thrust bearing (Replaced by 67448 beginning with engine #620-17 on -A. ) Crankshaft assy “ Consists of * 1 65354 Crankshaft «2: 60447 Tube 6 60449 Tube 1 182-B ‘Plug 2 60448 Tube 1 STD-554 Dowel Bearing thrust Se Baffle - Upper. . Gear - Crankshaft timing Gear - Camshaft. . : Plug - Hex head. 1- Wa 20 thread Oil sump : me aE Oil suction screen + Oversize or undersize parts available * Parts not serviced as details 16 No, Required Model -A -A2 .12 12 1 4 2 2 12 12 ~ 12 12 .12 12 a 2 1 1 1 1 2 2 2 2 2 2 2 2 6 6 2 2 4 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1Part No, 65399 65409 65410 65411 65413 65427 65428 65431 65441 65442 65444 65445, 05447 NUMERICAL PARTS LIST Part Name Screen assy - Oil suction Consists of 1 60422 Screen 1 64308 Plug Baffle assy - Cylinder, right front Consists of “1 65369 Baffle . * 1517 Support Baffle assy - Cylinder, left front Consists of * 1 65370 Baffle * * 1 1517 Support , Baffle assy - Cylinder right, rear Consists of + 1 65371 Baffle . * 1 65403 Bracket Baffle assy - Intercylinder. Consists of * 1 65373 Baffle * * 1 65405 Bracket . * 2 65407 Support Spring - Valve, outer Spring - Valve, inner. Shaft & drive assy - Bendix Consists of 1 65546 Drive assembly 1 1 60616 Shaft Seat ~ Valve spring, lower. Seat - Valve spring ; Housing assy - Bendix drive Consists of * 1 65444 Housing 3 25-11 Stud Gasket - Detent support Support assy - Detent Consists of * 1 65446 support * 1 STD-346 Ring = * 1 65448 Detent * Parts not serviced as details 11 4 STD-266 Rivet * 1 65400 Bracket 4 STD-266 Rivet 1 65401 Bracket 2 STD-266 Rivet 1 65474 Baffle, auxiliary. 6 STD-266 Rivet STD-708 Pin 1 65449 Spring 1 65450 Retainer 1 STD-184 Pin LYCOMING MODEL O-435-A AND 0-435-A2 AVIATION ENGINES No. Required Model -A -A2 1 1 1 1 1 1 1 1 4 4 . 12 12 12 1 1 ~1a 12 .12 12 1 1 1 1 1 1Part No, 65546 65567 65614 65628 65663 65664 65602 65701 65703 65704 65705 65734 65763 65769 65619 65820 65883 66044 66045 NUMERICAL PARTS LIST Part Name Drive assy - Bendix . Spring - Valve auxiliary Plug - Baffle attaching . . Clamp - Ignition cable (cylinders, 1 and 2) Ring - Piston, top compression (Replaced by 62916 beginning with engine #554-17) Ring - Piston, 2nd compression (Replaced by 62915 “A beginning with engine #554-17) . Grommet - Ignition cable plate Gasket - Carburetor. . Spring - Oil relief valve Crankcase Oil sump. = Plunger - Oil by-pass Oil sump. Plug - Oil by-pass Oil sump. Bearing - Magneto drive Insert - Spark plug 18-1.5 MM (Replaced by 66796) Baffle assy - Cylinder, left rear Consists of * 1 65372 Baffle * 2 STD-266 Rivet * 1 65768 Support Bushing - Connecting rod, upper. Rod assy - Connecting (Replaced by 61476 on -A beginning with engine #540-17 . Consists of * 1 65811 Rod 2 STD-872 Nut 1 65819 Bushing 2 60007 Bolt Clamp - Cylinder baffle eRe ¥ Camshaft assy . Consists of * 1 65091 Camshaft 1 STD-1065 Dowel Required with vacuum pump and drive Camshaft assy . i eis Consists of * 1 65091 Camshaft 1 STD-1066 Dowel Required when no vacuum pump or drive is used * Parts not serviced as details 18 No. eaabe eRe LYCOMING MODEL 0-435-A AND O-435-A2 AVIATION ENGINES Required Model -A2LYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES. NUMERICAL PARTS LIST No. Required Model Part No. Part Name -A -A2 66144 Lock plate - 6/16 hole x 1-21/64 in spacing z 2 2 66145 Dowel - 12 dia x 1/2 in long 2 2 2 2 66146 Lockplate - 5/16 holes x 1-13/64 in sacing Crankshaft and timing gear 2 2 66220 Clamp - 1-1/2 ID x 11/32 dia offset Ignition cable, Le 6 8 66222 Gasket - Magneto adapter 2 2 66429 Valve - Intake 6 6 66446 Cage - Thrust bearing 1 1 66458 Carburet . Marvel Schebler Part No. 10-2827 Model MA4-5 66514 Spring - Magneto coupling a) 8 66515, Spacer - Magneto drive coupling 8 8 66516 Spacer - Magneto coupling spring nn 16 16 66517 Retainer - Magneto coupling 2 2 66518 Flange - Magneto shaft coupling 2 2 66519 ‘Coupling assy - Magneto . 2 2 Consists of 1 66520 Flange 8 66516 Spacer 4 68514 Spring 4 66515 Spacer 1 66518 Flange 1 66521 Sleeve 1 66517 Retainer 66520 Flange - Magneto coupling drive 2 2 66521 Flange - Magneto drive coupling 2 2 +66527 Seat - Exhaust valve 6 6 +66528 Seat - Intake valve 6 6 +66529 Guide - Exhaust valve 6 6 66531 Valve - Exhaust 6 6 66584 Piston (4 ring)(Ending with engine #553- 1% (see Part Number 62319) 6 66593 Plate - Ignition cable 2 2 66610 Bushing - Rocker shaft Cylinder ‘ a oe * € . 24 24 66650 Gear - Magneto . co 2 2 66655 Adapter - Magneto Le 12 2 + Oversize or undersize parts are available 19LYCOMING MODEL Q-435-A AND O-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST Part No. Part Name 66663 Shaft assy - Tachometer Consists of * 1 66664 Shaft * 1 60463 Tube Sump assy - Oil Consists of * 66674 Sump STD-355 Plug 31D-14 Stud STD-405 Plug STD-91 Plug STD-862 Plug 66675 Es Os he 66676 66677 66680 Clip - Ignition cable (6 way) . Crankease assy - Complete No 492-17A) Consists of Clip - Ignition cable (3 way) . (Replaces Part No, 66809 beginning with engine * 1 66678 Crankcase assy - Right Consisting of STD-557 Dowel STD-1290 Insert 68733 Stud 38-13 Stud 38-19 Stud 25-13 Stud 1102 Plug 703-AA Eye 1 66661 Crankcase onsisting of STD-1290 Insert 66734 stud 50-15 Stud 38D-19 stud 25-8 Stud 1 STD-1111 Elbow 2 66145 Dowel 1 STD-760 Dowel Ve Onwnot eewoeNeen No. Required Model A ~A2 i 1 1 1 12 25-12 stud 4 25-11 Stud 2 31-12 stud 1 1 STD-431 Plug 2 31-10 Stud 2 2 1 1 1 2 66734 Stud 2 65042 stud 6 50-15 Stud 3 38D-19 Stud 1 STD-242 Bushing 2 25-8 stud 6 65007 Retainer : 3 31-12 stud 1 66679 Crankcase assy - Left 6 66007 Retainer 12 38-13 Stud 3 31-12 stud 1 103-AA Eye 1 1102 Plug 1 STD-47 Plug (Continued on the next page) * Parts not serviced as details 20LYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST No. Required Model Part No. Part Name “A Az 66680 Crankease assy - Complete (Continued) 1 1 1102 Plug 1 STP-682 Plug 21 25-11 Stud 4 25-16 stud 2 25-21 Stud 1 25D-10 Stud 2 25-18 Stud 1 60564 Bushing 66881 cylinder & Head assy ‘ 24 6 6 Consists of + 1 60498 Barrel 2 66796 Insert * 1 66656 Head 4 66610 Bushing 1 66528 Seat 4 31-11 Stud 1 66527 Seat 4 25-12 Stud 1 66529 Guide 1 STD-700 Elbow 66687 Pump - Vacuum (Pesco type B-2A, Model 3P-194-E 1 Optional on O-435-A 66689 Housing assy - Accessory (Replaced by 66709 on engine 4529-17, 531-17, 533-17, 894-17 and all from 538-17 on. So ras! Consists of * 1 66690 Housing 6 60118 Stad 3 STD-56 Bushing 1 60121 stud 1 STD-119 Plug 4 60473. stud 4 STD-242 Bushing 2 60585 Stud 1 1102 Plug 3 65044 Stud 5 60106 stud 4 65045 Stud 66692 Cable assy - Shielded. ~ . . ~t 1 Consists of 12 235 Sleeve 2 65692 Grommet AR 1421 Cable 2 66593 Plate 121675 Fitting 12 66752 Elbow assy. a a MAGNETO PARTS REQUIRED te FOR CABLE ASSEMBLY 66708 Gageassy-Qillevel © 2 2. 2... ed Consists of (Continued on the next page) * Parts not serviced as details 21LYCOMING MODEL 0-435-A AND O-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST No. Required Model Part No, Part Name -A -A2 66706 Gage assy - Oil level (Continued) . * « a * 1 66707 Gage * 1 80335 Knob To be used when not tricycle mounted 68709 Housing assy - Accessory (Replaced 66689 on -A beginning with engine #529-17, 531-17, 532-17, 534-17, and all from 538-17 on). fd 1 Consists of * 1 66669 Housing STD-56 Bushing 38-16 Stud 25-10 Stud 31D-16 Stud 1102 Plug 66583 Tube +86733, Stud - 9/16-18 x 10-21/32 in. Jong Right crankcase. . Sty wh 4 + 66734 Stud - 1/2-13 x 9-7/8 in. tong Right crankcase. . me ome 5 itl 2 Left crankease sey SF wt nl 2 66752 Elbow assy - Spark plug ce BD 12 Consists of * 1 65302 Elbow 1 1873 Nut 1 62713 Cone +66796 Insert - Spark plug 18-1.5 MM (Replaces 65763) . 12 12 +66802 Ring - Piston, oil regulating, No. 3 (Discontinued on ~A beginning with engine #554- (Replaced by 67540) 1.6 6 66809 Crankcase assy - Complete ws Discontinued - Engine with engine No. 49: Replaced by part No. 66680 Consists of * 1 66532 Crankcase assy - Right Consisting of STD-242 Bushing 38-17 stud 31-12 stud 25-11 stud STD-119 Plug 25-8 Stud STD-71 Plug Beane bene 1 STD-242 Bushing 12 60373 Stud 1 STD-287 Dowel © 60376 Stud 4 STD-1290 Insert 6 65007 Retainer 1 103-AA Eye 2 65042 stud (Continued on the next page) + Oversize or undersize parts available * Parts not serviced as details 22Part No. 66809 66825 66827 66828 66829 + 66861 66865 LYCOMING MODEL ©-435-A AND O-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST Part Name Crankcase assv - Complete (Continued) 2 1102 Piug 3 65064 Stud 4 60105 stud 4 66444 Stud 6 60108 Stud 2 66445 Stud 2 60121 stud * 1 66522 Crankcase 3 60123 Stud * 1 66533 Crankcase assy - Left Consisting of 4 STD-1290 Insert 8 60376 stud 1102 Plug 3 65064 stud 60121 Stud 2 66445 Stud 60123 stud * 66523 Crankcase 12 60373 stud STD-47 Plug STD-682 Plug STD-760 Dowel STD-1111 Elbow 1102 Plug 60106 Stud 60107 stud 20 60109 stud 2 60570 stud 1 60571 Stud 1 65170 stud 1 66145 Dowel Washer - 1 OD x 13/32 x 3/32 in, thick Generator drive coupling “ Adapter - Generator drive coupling... . Button - Generator coupling drive : Gear assy - Generator couphng 5 |... Consists of 1 60622 Bushing * 1 66826 Gear Piston. Foe Crankease assy - Complete | 1 1 |)! | Consists of * 1 66864 Crankcase assy - Right (Continued on the next page) ae ee * Parts not serviced as details + Oversize or undersize parts available 23 103-AA Eye 6 §5007 Retainer No, Required -A 1 wane Model ~A2 HereLYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES NUMERICAL PARTS LIST No. Required Model Part No. Part Name -A -A2 66865 Crankcase assy - Complete (Continued). . . . 1 Consisting of 2 STD-557 Dowel 3 38D-19 stud 4 STD-1290 Insert 4 38-19 stud 4 66733 Stud 1 STD-242 Bushing 2 66734 Stud 9 25-13 Stud 2 65042 Stud 2 25-8 Stud 6 50-15 Stud 2 1102 Plug 6 65007 Retainer 1 703-AA Eye 12 38-13 Stud * 1 66867 Crankcase 3 91-12 stud * 1 66863 Crankcase assy - Left Consisting of 4 STD-1290 Insert 2 25-8 Stud 2 66734 Stud 1 703-AA Eye 6 50-15 stud 6 65007 Retainer 12 38-13 Stud 1 1102 Plug 1 38D-19 stud * 1 66866 Crankcase 3 31-12 stud 8 67453 Dowel 2 66145 Dowel 1 STD-760 Dowel 1 STD-47 Dowel 1 1102 Plug 1 STD-1111 Elbow 1 STD-682 Plug 1 25-11 Stud 4 25-16 stud 20 25-11 Stud 2 25-21 Stud 1 25D-10 Stud 2 25-18 Stud 1 60564 Bushing 66869 Carburetor. 2 2 1 Marvel Schebler part No. 10-3323 Model MA4-5 86910 Pump - Fuel (Replaces 60577 beginning engine #526-17 1 A-C Spark Plug Co. part No. GP-17773, type A-H 66922 Spring - Oil pressure relief valve Grankease 2 ee eee 1 Oil sump... bi ER EH te Tw 1 * Parts not serviced as details 24LYCOMING MODE L 0-435-A AND 0-435-A2 AVIATION ENGINES. NUMLINCAL PARTS LIST No, Required Model Part No, Part Name -A Az 66969 Gage assy - Onl level 1 1 Consists of * 1 66968 Gage * 1 60335 Knob Used for tricycle installation +67432 Ring - Piston, top compression 6 + 67447 Bearing - Crankshaft 8 67448 Cap and ring assy - Thrust bearing (Replaces 65347 1 1 beginning with engine #620-17 on -A) Consists of * 1 67451 Cap * 1 40504 Ring 67450 Spacer - Thrust bearing (Beginning with engine 620-17) 1 a 67452 Cap assy - Thrust bearing (Replaces S947 beginning engine #620-17 on -A).. . 1 1 Consists of 1 67448 Cap and ring assy 1 40507 Seal 67453 Dowel - Crankshaft bearing Crankcase aw aw 8 67498 Ring - Oil seal, 3/16 section x 4-27/32 ID Cylinder base ac me ow a a 6 6 67546 Installation - Thermocouple... . 2... . 6 (copper - Constantan AN type) *__ (May be used in place of 61646) 67540 Ring - Piston, Oil regulating No.3... - 6 (Replaced 86802 beginning with engine #854-17) * Parts not serviced as details + Indicates oversize and under size parts are available 25LYCOMING MODE [. 0-435-A AND 0-435-A2 AVIATION ENGINE NUMERICAL STANDARD PARTS LIST No. Required MODEL, Part No. Part Name -A -A2 STD-8 Washer - Plain, 1 4 in Bendix drive housing 2 2. ee Detent support assy Se Propeller hub retaining nut ‘ : Intake pipe Ce Qil screencover. . . 2... ee Oil sump : ee Vacuum pump or cover. Accessory housing 5 ss wee Crankease bon FREE BG bE STD-9 Nut - Plain, 1/4-28 Ignition cable clip. .oe ke Detent support assy Ba gt Bi ea Accessory housing ce . Crankease . re Oil sereencover. . 2 2 2. Lt Oil sump. . . fee Vacuum pump or cover... . Bendix drive housing. | 5 Intake pipes : oe STD-15 Nut - Slotted shear, 3/8-24 Generator drive coupling . . . 2 2... STD-28 Washer - Plain, No. 10 Upper baffle 2. 0. alfle attaching plug... . =. Ignition cable . be Baffle clamp = STD-29 Screw - Round head, 10-82 x 3/8 in. tong | Ignition cable mee ee oh Ge Upper baffle ag 3 1 STD-33, Washer - Plain, 3/6 in. Fuel pump or cover... . : Thrust bearingeap 2. 2. 2. we Crankease |, oe STD-35 Washer - Plain, 5/16 in. Carburetor. a Starter re OU pug oc em ew ew ee Exhaust flanges 2 2. 2 1. 2 ee Generator. Fo STD-36 Locknut - Palnut, §/16 in. Carburetor. 2 2 ee 26 oBakabewe yoy obata Seow BoeSeolow ws x RoeSaclow 2 x y Rost pond 2 weaoe con Ee wBaen eon Fe »LYCOMING MODEL. 0-435-A AND 0-435-A2 AVIATION ENGINE NUM? RICAL STANDARD PARTS LIST No. Required MODEL Part No Part Name -A -A2 STD-37 Nut - Plain, 5 16-24 Exhaust flanges : so 12 Magneto 4 4 Generator 3 3 Carburetor 4 4 STD-39 Locknut - Painut, 38 in Cylinder : 2 ad 24 sTD-47 Plug - Pipe, 1/4 in, (Allen) Accessory housing =. ww we 1 Crankcase . 1 1 STD-50 Nut - Slotted shear, 5/ 16-24 Oil pump. Z s 4 4 Carburetor . 4 4 STD-56 Bushing - Screw, 9/16-18 OD x 5/16-24 1D Accessory housing * Pepa ee ® 3 STD-63, ‘Nut - Plain, 10-32 Upper baffle Lo . .14 14 Baffle clamp 5 2 . 8 8 Ignition cable 2B 8 STD-65 Pin - Flat head, 1/4dia. x 17/32 in. long | Propeller hub retaining mut... se 1 STD-68 Pin - Cotter, 1 16 dia. x 1/2 in. long Propeller hub retaining mut 2... 2 2D 1 STD-71 Plug - Pipe, 3/8 in (Allen) Accessory housing Po ed 1 STD-91 Plug - Pipe, 1/2 in. (Allen) Oil sump ; Baa 3 2 2 STD-97 Nut - Slotted 1/4-28 | ‘Accessory housing 1 1 STD-111 Gasket - Annular 1 in ID x 1-1/4 OD x 3/32 section Oll screen plug tee Od 1 STD-119 Plug - Pipe, 1/4 in dia. x 1/4 in, long Accessory housing feb eae 1 STD-143 Washer - Plain, 1/2 in Crankease 2 2 STD-160 Washer - Shakeproof lock, 1/'4 in Ignition cable clip roe ee eB 3 Bendix drive housing oe ae ge sw a 8 3 Detent support assy . a ee ee | 3 Vacuum pumpcover. © 6. 2... 4 Rocker box cover. oe 86 36 Right rear baffle (Continued on next page) | 1 1 27LYCOMING MODEL 0-485-A AND O-435-A2 AVIATION ENGINE NUMERICAL STANDARD PARTS LIST No, Required MODEL Part No. Part N -A ~A2 STD-160 Washer - Shakeproof lock, 1/4 in, (Continued) Intake pipes, 4 co OH 24 Crankcase Fo ee 8 9 Accessory housing». 2. 1... ML Oil screen cover rr 4 Oil sump 2 24 STD-164 Lockwire ++ ea WAR AR STD-184 Pin - Taper, No. 0000 x 5/8 in. long. Detent spring retainer . som sm 1 STD-242 Bushing - Screw, 7/16-20 OD x 1/4-28 ID Right crankcase Se 1 1 Accessory housing 4 4 STD-243 Washer - Plain, No. 6 Ignition cable clamp 6 6 Priming line clamp 4 4 STD-251 Washer - Lock, No. 10 Ignition cable SB 8 Upper baffle... ov «Ad 14 STD-252 Washer - 47/64 OD x 11/32 ID x 1/16 section Magneto . ce . - 4 4 STD-258 Nut - Plain, 6-32 Ignition cable clamp g spe . 6 6 Priming line clamp . we A 4 STD-279 Screw - Hex head, 5/16-24 x 1 (aries) Starter . ze 3 STD-204 Gasket - Annular, 7/2 OD x 5/8 ID x 3/82 section Thermometer well plug em em ew Eb 1 STD-336 Seal - Oil, 3/32 section x 15/32 [D- Crankcases.. rs C) 10 STD-346 Ring - Oil seal, 5/64 dia. section x ae D Detent support assy . a ee 1 STD-347 Hose - 3/8 ID x 1-13/16 in. long Cylinder drain tubes. | 6 STD-348 Clamp - Hose, 11/16 x 1/2 in. wide” Cylinder drain tubes oD 12 STD-355 Plug - Pipe, 3/4 in. (Allen) Oi) sump. weed 1 STD-405 Plug - Pipe, 1/8 in. (Square head, drilled) O11 sump 5 seme & 1 STD-431 Plug - Pipe, 1/8 in. (Slotted) | Oil sump. . . a 1 28LYCOMING MODF1 0-435-A AND 0-435-A2 AVIATION ENGINE NUMERICAL STANDARD PARTS LIST No. Required MODEL Part No. Part Name -A -A2 STD-473 Screw - Hex head, 1 4-28 x 5/8 in. long Right rear baffle . 1 1 STD-475 Washer - Shakeproof Inck. 5 16 in Generator ce 8 3 Exhaust flange ea ee my me 12 Magneto 24 4 STD-488 Washer - 13/64 ID x 17/32 OD x 1/16 in. thick Baffle clamp i 8 8 STD-528 Nut - Plain, 1. 2-20 Cylinders 7 24 24 Crankcase : ee oa¢ 2 STD-529 Locknut - Palnut, 1/2 in, Cylinders . 24 24 STD-543 Pin - Cotter, 3/32 dia x 5/8 in tong Connecting rod bolts . 12 12 STD-546 Nipple - Primer fo 4 STD-553 Screw - Round head, 6-32 x 1/2 in. long Ignition cable clamp : 2 6 6 Priming line clamp . wee eee 4 STD-554 Dowel - 1/4 dia x 9/32 in. long Crankshaft. Sod 1 STD-557 Dowel - Hollow, 1/2 dia x 11/16 in. long Right crankcase saa ® 2 STD-589 Gasket - Annular, 1-1/8 OD x 29/32 in. 1/16 Oil by-pass plug . moe we 5 1 1 Oil relief valve efH se sg 1 1 STD-596 Nut - Plain, 3/8-24 Crankcase 4 4 Fuel pump or cover . 2 2 STD-599 Screw - Self tapping round head, No. 2 Name plate 4 4 STD-619 Washer - 17/32 ID x 1-8/4 OD x 11/64 thick | Engine support bushing . co 10 10 STD-677 Washer ~ Shakeproof lock, 1/2 in. Crankease she Geum aD 2 STD-678 Washer - Shakeproof lock, 3/8 in. Crankcase foes ee ee wo Ol 4 Fuel pump or cover STD-679 Screw - 5/16-24 x 27/64 in. long Camshaft gear tos Required when using camshaft assy 66045 29LYCOMING MODEL Q-a3u-A AND O-435-A2 AVIATION ENGINE NUMEKICAL STANDARD PARTS LIST. No. Required MODEL Part No. Part Name -A -Ag STD-681 Key - Woodruff, 3. 32 x 5/8 in. Oil pump im : 1 1 STD-682 Plug - Pipe, 1/8 in. (Allen) Crankcase So 1 1 STD-684 Nipple - Hose, straight 3/8 in Cylinder head oil drain tubes... «aa 6 6 STD-692 Screw - Round head, 10-32 x 1/2 in. tong | Ignition cable Fw ae fl 4 STD-697 Screw - 3.8-24 x 1-3/16 long, drilled Thrust bearing cap . -. 2 6 6 STD-700 Elbow - Coupling, 3/8 flared tube Cylinder, a aeeae & 6 STD-703 Serew - 5/16-24 x 37/64 in. long Camshaft gear. 2. 4 4 Required when using camshaft assy 66044 STD-707 Screw - 5) 16-24 x 11/16 in. long Crankshaft and timing gear re) 4 STD-708 Pin - 1.4 dia x 1109 in, long Bendix drive shaft wee ed 1 STD-713 Pin = Cotter, 332 aia x 3/4 in, long Generator gear, tae ey wD 1 STD-714 Pin - Cotter, {8 dia x 1 on. long il pump idler shaft ne | 1 STD-717 Ring - 1/8 dia section x 1-1/2 ID Intake pipe flange, lower fe ee 6 6 STD-760 Dowel - 3/32 dia x 5/8 in. long Crankcase #2 Ae oi eas 1 STD-853 Tee - Union, 1/8 in. tube Priming lines = . “ 3 3 STD-858 Key - Woodruff, 5/8 x 5/32 Crankshaft gear fed 1 STD-862 Plug - Pipe, 1/2 in. (Square head, ariiled) Gil sump. tae + @ 1 STD-872 Nut - Slotted, 3/8-24° Connecting rod aaa ee og og 9 12 Crankcase ne | 4 STD-921 screw Baffle attaching plug. - 2... . ee ee A 4 STD-953 Grommet - 9/16 ID Unshielded cable only . . . . 2... 1. 2 STD-960 Circlip - 1-1/4 in. OD Magneto drive gear». 2. 1. ee 2 30LYCOMING MoDt Part No. STD-961 STD-1065 STD-1066 STD-1111 STD-1290 STD-1412 STD-1679 61468 NUMERIC/ i STANDARD PARTS LIST A AND 0-435-A2 AVIATION ENGINE No. Required MODEL, Part Name -A -A2 Lock ring - 2-23, 64 x 1 16 thick x 3/32 Magneto adapter 2 2 Dowel - Stepped, 5, 16 and 1/4 dia x 35/64 in, long” Used only on camshaft No, 66044. $ 1 1 Dowel - Stepped, 5 16 x 1/4 dia x 18/32 in. long Camshaft . 1 Used on camshaft assy 66945 only Elbow - Pipe, 3.4.x 34 hose x 90° Left crankcase 2 1 Insert - Heli-coil, 3/8-24 x 3/4 in. long Right crankcase ee ae, 4 Left crankcase 24 4 Screw - Fillister head 14-20 x 5,8 in. long’ Rocker box cover b 36 36 Bolt - Hex head, 1,4-26 x 1 in long Oil sump Aes ot eae eee a 4 SERVICE TOOLS LIST Kit assy - Tool 1 Consists of 1 61678 Bar - Wrench 61459 Socket - Spark plug wrench 11/16 x 7/8 hex 1130 Compressor - Valve spring 1155 Wrench 1-1/4 hex 45902 Container - Tool 61551 Wrench - Cyl. hold down nut 3/4 hax 61550 Wrench - Cyl hold down nut 9/16 hex 65525 Socket - Universal joint, 7/16 hex 65526 Socket - Universal joint, 1/2 hex 65528. Gage - Valve clearance 61552 Extension - Cyl hold down nut wrench 31LYCOMING MODEL 0-435-A AND O-435-A2 AVIATION ENGINES. Part No. 25-8-P03 25-8-P07 25-8-P12 25-10-P03 25-10-P07 25-10-P12 25D-10-P03 28D-10-P07 28D-10-P12 25-11-P03 25-11-P07 25-11-12 25-12-P03 25-12-P07 25-12-P12 25-13-P03 25-13-POT 25-13-P12 25-16-03 25-16-PO7 25-16-P12 25-18-P03 25-18- POT 25-18-P12 25-21-P03 25-21-PO7 25-21-P12 31-10-P03 31-10- P07 31-10- p12 31-11-P03 31-11-POT 31-11-P12 31-12-P03 31-12-07 31-12-P12 31D-14-P03 31D-14-P07 31D-14- P12 31-16-P03 31-16-PO7 31-16-P12 31D-16-P03 NUMERICAL OVERSIZE AND UNDERSIZE PARTS LIST Oversizs and Part Nome Undersize Stud - 14-20 x 1 in long + 003 Stud - 1/4-20 x Lin Long + .007 Stud - 1.4 Lin, long +012 4-20 x 1-1/4 in. long + .003 4. 1-1/4 in, ong +007 1, 4-20 x 1-1/4 in. long ‘ + 012 4 1-1/4 in. long (drilled) + 603 -14 1-1/4 in. long (drilled) +007 1/4-20 x 1-1/4 in long (@rilled) +012 1/4-20 x 1-3/8 in. long + 003 wa - long, + 007 1/4 long +012 1/4 long + 003 1/4 long +007 4 long +012 1/4 . Long +003, 1/4-2 long +.007 1/4-20 x . long +012 1/4-20 x +003 1/4-20 x +007 1/4-20 x2 in. long . +012 1/4-20 x 2-1/4 in, long +003 1/4-20 x 2-1/4 in. long +.007 1/4-20 x 2-1/4 in. long +012 1/4-20 x 2-5/8 in. long +003 1/4-20 x 2-5/8 in, long +.007 1/4-20 x 2-5/8 in. long. +012 5/16-18 x 1-1/4 in. long +.003 5/16-18 x 1-1/4 in. long +.007 5/16-18 x 1-1/4 in, long +012 Stud ~ 5/16-18 x 1-3/8 in. long +003 Stud - 5/16-18 x 1-3/8 in. long +007 Stud - 5/16-18 x 1-3/8 in. long +.012 Stud - 5/16-18 x 1-1/2 in, long +.003 Stud - §/16-18 x 1-1/2 in. long +.007 Stud - 5/16-18 x 1-1/2 in. long +012 Stud ~ 5/16-18 x 1-3/4 in. long +003 Stud - 5/16-18 x 1-3/4 in. long +007 Stud - 5/16-18 x 1-3/4 in. long +012 Stud - 5/16-18 x 2 in. long +003 Stud - 5/16-18 x 2 in. long +.007 Stud - 5/16-18 x 2in. long +012 Stud ~ 5/16-18 x 2 in. long (drilled) . +003 32LYCOMING MODE1. ' 435-A AND 0. 435-A2 AVIATION ENGINES NUMERICAL OVERSIZE AND UNDERSIZE PARTS LIST Oversize and Part No Part Name Undersize 31D-16-P07 Stud /16-18 x 2m tong (drilled) + 007 31D-16-P12 Stud - 5/16-18 x 2 in Long (arilled) + 012 38-13- P03 Stud - 3/8-16 x 1-5-8 in. long “ : + 003 38-13-PO7 Stud - 3/8-16 x 1-5 8in long. + 007 38-13-P12 Stud - 3 8-16 x 1-5/8 in long +012 38-17-P03 Stud - 3/8-16 x 2-1/8 in long + 003 38-17-07 Stud - 3/8-16 x 2-1/8 in long + 007 38-17-P12 Stud - 3/8-16 x 2-1 8 in. long +012 38-19-P03 Stud - 3/8-16 x 2-3/8 in tong + 003 38-19-PO7 Stud - 3/8-16 x 2-3/8 in long + 007 38-19-P12 Stud - 3/8-16 x 2-3/8 in. long +012 38D-19-P03 Stud - 3/8-16 x 2-3/8 in. long (drilled) - +,003 38D-19-P07 Stud - 3/8-16 x 2-3/8 in long (drilled). + 007 38D-19-P12 Stud - 3/8-16 x 2-3/8 in. long (drilled) soe #012 50-15-03 Stud - 1/2-13x1-7/8in long 2... + 003 30-15-P07 Stud - 1/2-13 x 1-7/8 in long : 2 +007 50-15-P12 Stud - 1/2-13 x 1-7/8 in. long . + 012 60028- P05 Guide - Valve - + 005 60028-P10 Guide - Valve : + G10 60028. P20 Guide ~ Valve : : +026 60378-P10 Ring - Piston, oil scraper a kom ye SOTO, 60378- P20 Ring - Piston, oil scraper te eS + +020 60729-M03 Bearing - Crankshaft |) 2. ese 608 60729-M10 Bearing - Crankshaft . vo ee 2016 60810-M03 Bearing - Crankshaft pe - 003 60810-M1G Bearing - Crankshaft Bo LO 61662-M03 Bearing - Connecting rod. a 2 5-003 61662-M10 Bearing - Connecting rod eee ae ea 6 7/010 61681-PCS Guide - valve. . + 005 61681-P10 Guide - Valve . + 010 61681-P20 Guide - Valve - +020 61682-PCS Guide - Valve, exhaust + 005 61682-P10 Guide - valve, exhaust +.C10 61682-P26 Guide - Valve, exhaust +026 62719S- P10 Piston § A : +010 627195-P20 Piston : o +020 62326-P10 Ring - Piston, top compression. +.C16 62326-P20 Ring - Piston, top compression + 020 62915-P10 Ring - Piston, 2nd compression +.010 62915-P20 Ring - Piston, 2nd compression +.020 62916-P10 Ring - Piston, top vompression =... |... +010 62916-P20 Ring - Piston, top compression see +020 65042-P03 Stud - 1/2-13 x 3-27/321n. long |. see +008 33LYCOMING MUDEL 0-435-AND O-435-A2 AVIATION ENGINES NUMERICAL OVERSIZE AND UNDERSIZE PARTS LIST Oversi and Part No. Part Name Undersize 65042-PO7 Stud - 1/2-13 x 3-27/32 in, long 2. +.007 65042- P12 Stud - 1/2-13 x 3-27/32 in long 2 ke +012 65063-P10 Ring - Piston top compression... | +010 65663- P20 Ring - Piston top compression +020 65664-P10 Ring - Piston, 2nd compression + 010 65664- P20 Ring - Piston, 2nd compression... + 020 66527-P10 Seat - Valve, exhaust...) +010 66527- P20 Seat - Valve, exhaust + 020 66527- P50 Seat - Valve, exhaust + 050 66528-P10 Seat - Valve, intake . +.010 66528-P20 Seat - Valve, intake . + .020 66528-P50 Seat - Valve, intake + .050 66529- P05 Guide - Valve, exhaust . Se +005 66529-P10 Guide - Valve, exhaust So ee #010 66529- P20 Guide - Valve, exhaust : +020 66733-P03 Stud - 9/16-18 x 10-21/32 in, long | +.003 66733-PO7 Stud - 9/16-18 x 10-21/32in. long |. +007 66733-P12 Stud - 9/16-18 x 10-21/32 in long | | +.012 66734-PO3 Stud - 1/2-13 x 9-7/8 in. long 2 25 me + 003 66734-P07 Stud - 1/2-13 x 9-7/8 in. long... sk +007 66734-P12 Stud - 1/2-13 x 9-7/8 in. long 2... 4.012 66802-P10 Ring - Piston, oil regulating, No.3. +010 66802-P20 Ring - Piston, oil regulating, No. 3. +020 86861-P10 Piston. : +.010 66861-P20 Piston. Se +.020 67432-P10 Ring - Piston, top compression. . . |. | |. 4.010 67432- P20 Ring - Piston, top compression... . . 2)... 4.020 67447- M03 Bearing - Crankshat. =... 1. | 1 | || = 008 67447-M10 Bearing - Crankshaft 2 ee meme - 010 67540-P10 Ring - Piston, oil regulating #3... a +.010 67540-P20 Ring - Piston, oil regulating #3. 7 +020 34LYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES ALPHABETICAL PARTS LIST Part Name A Adapter - Generator drive coupling Adapter - Magneto Baffle - Upper Baffle assy - Cylinder, left front Baffle assy - Cylinder, left rear Baffle assy - Cylinder, right front . Baffle assy - Cylinder, right rear Baffle assy - Intercylinder Bearing - Connecting rod . ce : Bearing - Crankshaft . worm ee eG Bearing - Crankshaft a eee Bearing - Crankshaft fo Bearing - Magneto drive . Bearing thrust sok mR Body - Oil pump Bolt - Connecting rod : ea es Bolt - Hex head, 10-32 x 2-7/8 in log. ss 1 sll Bolt - Hex head, 1/4-28x lin. long... Bracket - Upperbaffle. 2 2 Bushing - Bendix drive gear . Bushing - Connecting rod, upper Bushing - Engine support Bushing - Generator gear Bushing - Rocker shaft. Soe Bushing - Screw - 7/16-20x1/4-281D . . 1. 1 1 1), Bushing - Screw 9/16-18 OD x 5/16-24ID . . 2... 1. Bushing - Valve rocker Bo Button - Generator coupling drive Cable -Hightension. 2 | |) le Cable assy - Shielded : : Cage - Thrust bearing). ) | || : Camshaft assy Camshaft assy Cap - Sealing oe Cap assy - Thrust bearing tee we Ba Cap and ring assy - Thrust bearing | | || Carburetor foe Carburetor i ee Cirelip - 6/16 ID x 1/32 dia section - | | | | Cirelip - 1-1/4 in. OD 35 Part No . 66827 . 66655 65376 65410 65769 65409 65411 65413 . 61662 +. 60729 60810 67447 65734 65366 . 61371 60007 107-B STD-1679 ‘ 66710 - 60564 65819 60023 60622 : 66610 . STD-242 . . STD-56 . 60398 66828 . . 1421-8 . 66692 . . 66446 66044 66045 61597 67452 67448 66458 66869 60354 STD-960LYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES ALPHABETICAL PATS LIST Part Name Clamp - 1-1/2 ID with 1/4 in. dia offset Clamp - 1-1/2 ID with 11/32 dia. offset Clamp - Cylinder baffle 2 2... Clamp - Hose, 11/16 x 1/2 in. wide. . Clamp ~ Ignition cable, cylinders 1 and 2 Clip - Ignition cable, 3 way Clip - Ignition cable, 6 way Clip - Primer line Cone - Propeller hub, front Coupling assy - Magneto Cover - Fuel pump Cone - Propeller hub, rear Cover - Oil sereen Cover - Rocker box Cover - Vacuum pump Cover assy - Oil pump . Crankcase assy - Complete Crankcase assy - Complete Crankcase assy - Complete Crankshaft assy Cylinder & Head assy Dowel - 3/32 dia x 3/8 in. long Dowel - 1/4 dia x 9/32 in. long Dowel - 1/2 dia x 1/2 in. long Dowel - Crankshaft bearing . ‘ Dowel - Hollow, 1/2 dia x 11/16 in, long Dowel - Stepped, $/16-1/4 dia x 13/32 in. long . Dowel - Stepped, 5/16 and 1/4 dia x a8/ea in. tone Drive assy - Bendix E Elbow - Coupling, 3/8 flared tube : Elbow - Pipe, 3/4 x 3/4 hose x 90° Elbow assy - Spark plug Eye - Lifting F Fitting - Flanged cable (shielded) Flange - Exhaust. . 2. . Flange - Exhaust. Flange - Intake pipe, lower Flange - Intake pipe, upper 36 Part No. 65331 66220 65883, STD-348 65628 66676 66677 - 65530 . 857-BA 66519 65098 858-EC - 60404 61247 60430 61370 66680 66809 66865 65356 66681 STD-760 STD-554 66145 67453 STD-557 » STD-1066 + STD-1065 65546 STD-700 . STD-1111 66752 703-AA 1675 61259 61260 60603 60069LYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES ALPHABETICAL PARTS LIST Part Name Gage assy - Oillevel © 2 2 ee Gage assy - Oil level Gasket - 2 bolt flange - 1-3/4 ID Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket Gasket - Gear - Gear - Gear - Gear - Gear - Gear - Gear ~ Generator - 12 V- 12 Ampere . - 3 bolt flange, 3-9/32 ID. “ . Accessory housing . ta Annular, 7/8 OD x 5/8 ID x 3/32 section. Annular, 1-1/8 OD x 29/32 Dx 1/16... Annular, 1 in, ID x 1-1/4 OD x 3/32 section. Bendix drive housing... . Carburetor, 2 2... ee a se Detent support. 2 2. 1. oe Exhaust flange a . Fuel pump. a8 Magneto c - Magnet adapter . Oil filler plug. ee Oil sump ‘ & a ea Oil strainer cover... . Rocker box cover a ¥ Starter . oe : : Vacuum pump. . we 6 4 Bendix drive, 2... Camshaft. 2 2. Crankshaft timing. 2.) Magneto oa Starter Se Vacuum pump 2... mee Vacuum pump drive. | a Gear assy - Crankshaft and starting Gear assy - Generator coupling. . Generator - 12. V- 25 Ampere . . . - Grommet - 9/16ID . . moe Grommet - Ignition cable plate . Guide - Exhaust valve Guide - Valve. Guide - Valve (alternate to 60028) Guide - Valve, exhaust (alternate to 66529) H Hose - 3/8 ID x 1-13/16 in. long. Soe Housing assy - Accessory. . . . 2. 1... Housing - Bendix drive. 2. 2. 2 1 we Part No 66706 66969 60131 45786 » 60532 STD-294 STD-589 STD-111 6578 65701 65445 65321 60096 238 - 66222 . 45187 65099 60130 61246 60555 8313 60518 65378 65377 66650 60527 . 60654 60655 61839 . 66829 + 61369 61389 STD-953 65692 66529 60028 61681 61682 STD-347 - 66709 . 65444LYCOMING MODEL O-435-A AND 0-435-A2 AVIATION ENGINES ALPHABETICAL PARTS LIST Part Name Impeller - Oil pump driven Impeller - Oil pump driving |. Insert - Heli-coil, 3/8-24 x 3/4 in, long . Insert - Spark plug 18-1.5 MM (Replaces 65763) K Key - Valve . Key - Woodruff, 3/32 x 5/8 in. Key - Woodruff, 5/8 x 5/32 in. Locknut - Painut, 3/8 in, Locknut - Palnut, 1/2 in. . Lockplate - 5/16 hole x 1-21/64 in. spacing — Lockplate - 5/16 holes x 1-13/64 in, spacing Lock ring - 2-23/64 x 1/16 thick x 3/32 section Lockwire wee ee ee Loom - Priming line M Magneto ~ Shielded : N Name plate . . Nipple - Hose, straight 3/8 in. Nipple - Primer . Nut - Lock, thrust bearing. Nut - Plain, 6-32 “ Nut - Plain, 10-32 Nut - Plain, 1/4-28 Nut - Plain, 5/16-24 : Nut - Plain, 3/8-24 = Nut - Plain, 3/8-24 . Nut - Plain, 1/2-20 Nut - Propeller hub retaining Nut - Slotted, 1/4-28 Nut - Slotted, 3/8-24 Nut - Slotted shear, 5/16-24 . Nut - Slotted shear, 3/8-24 Nut - Spark plug union Pin - 1/4 dia x 1.109 in. long. Pin - Cotter, 1/16 dia x 1/2 in, long Pin - Cotter, 3/32 dia x /8 in. long 38 Part No 60747 - 80778 STD-1290 66796 66009 STD-681 STD-858 STD-39 STD-529 66144 - 66146 STD-961 STD-164 - 1892-M 65075 61548 STD-684 STD-546 513-E STD-258 STD-63 . STD-9 . STD-37 383-B STD-596 STD-528 861-GA STD-97 STD-872 STD-50 STD-15 1573-C STD-708 STD-68 STD-543LYCOMING MODEL 0-435-A AND 0-435-A2 AVIATION ENGINES ALPHABETICAL PARTS LIST Part Name Pin - Cotter, 3/32 dia x 3/4 in. long woes Pin - Cotter, 1/8 dia x 1 in, long oo EG Pin - Flat head, 1/4 dia x 17/92 in, long Pin - Piston a Pe ee Pin - Taper, No 0000 x 5/8 in, long ee Pipe - Intake, No, 1 and 6 cylinders Pipe - Intake, No 2 and 5 cylinders seo RG Pine - Intake No 3and4 cylinders... . 1. Piston . Piston . sane Piston BoE 2 : Piate - Ignition cable. Plate - Spark plug cable = Plug - Baffle attaching. | : Plug - Crankshaft oi] seal . Plug - Hex head. 1-1/4 x 1-20 thread a Plug - Oil by-pass : Se Plug - Ou filler Fo Plug - O11 relief valve es Plug - Pipe. 1/8 in, (Allen). Plug - Pipe, 1/8 x 3/8 in. long (Socket) Se Plug - Pipe. 1/81n. (Slotted). sR e Plug - Pipe, 1/8 in. (Square head, drilled) . . | Plug - Pipe, 1/4 in. dia x 1/4 in. long. fe Plug - Pipe. 1/4 in. (Allen) cme YER GORE Plug - Pipe. 3/8 in. (Allen). 2 2 0 ee ee Plug - Pipe, 1/2in (Allen). eee Plug - Pipe, 3/4 in (Allen) . 2. a: Plug - Pipe, 1/2 .n (square head, drilled) Plug - Piston pin ce «ms Plunger - Fuel pump fea we Ew Ee Pl nger - Oil by-pass Doe Plunger - Oil relief Fump - Fuel Pump- Vacuum . 2. 2 1 2. t Regulator - Voltage mem 2 oe om Regulator - Voltage. . . . “ Retainer - Shroud tube seal z soe ee Ring - 1/8 dia section x 1-1/2ID . . . . st Ring - Oil seal, 5/64 dia section x 3/8 ID woe Ring ~ Onl seal, 3/16 section x 4-27/32ID . . iting - Piston, 2nd compression. . . . . . Ring - Piston, top compression . ° | . 39 Part No STD-713 STD=714 STD-65 60403 STD-184 65114 65115, . . 65116 62719 & 62319 s 66861 66584 66593 65708 65614 182-B 65398 65705 60433 60081 ‘STD-682 = 1102 - +. STD-431 +. + STD-405 so... STD-119 so... STD- - . . STD-1 2 STD-91 . . . STD-355 . STD-862 eas 60311 a - 60549 . 85704 - = 60080 . 66910 Hw . 66687 61294 - 5 61388 oe - 65007 . . STD-717 STD-346 - 67498 - s+ 62915 . 65663LYCOMING MODEL O-435-A AND 0-435-A2 AVIATION ENGINES ALPHABETICAL PARTS LIST Part Name Ring - Piston, top compression _ Ring - Piston, 2nd compression Ring - Piston, oil regulating No. 3 Ring - Piston, oil regulating, No. 3. Ring ~ Piston, scraper : Ring - Piston, top compression . Rirg - Propeller hub snap Ring - Retaining, vacuum pump gear Rocker assy - Valve : Rod assy - Connecting Rod assy - Connecting Rod assy - Push Rod assy - Push Rod assy - Push Screen assy - Oil pressure Screen assy - Oil section . Screen - Oil suction Screw - Baffle attaching « Screw - 5/16-24 x 37/64 in, long Screw - 5/16-24 x 11/16 in. long Screw - 5/16-24 x 27/64 in. long. . Serew - 5/8-24 x 1-3/16 in, long, drilled” Screw - Fillister head, 1/4-20 x 3/8 in, long Screw - Hex head, 1/4-28 x 5/8 in. long . Screw - Hex head, 5/16-24 x 1 (drilled) Screw - Round head, 6-32 x 1/2 in, long Screw - Round head, 10-32 x 3/8 in. long . Serew - Round head, 10-32 x 1/2 in. long . Serew - Self tapping, round head, No. 2- . Seal - Oil, 3/32 section x 15/32ID. . - Seal - Oil, 2-7/8 ID x 4 OD x 15/32 wide . Seal - Oil, tachometer drive . 7 Seal - Shroud tube Seal - Thrust bearing Seat - Intake valve Seat - Exhaust valve Seat - Valve spring : Seat - Valve spring, lower Shaft - Bendix drive . Shaft - Oil pump Shaft - Oil pump idler Shaft - Valve rocker. 40 Part No 62916 65664 67540 66802 60378 67432 . 862-BA 60556 60193 61476 65820 60480 60481 60482 60407 65399 - 60422 STD-921 STD-703 S¥D-707 STD-679 STD-697 2 STD-1412 STD-473 STD-279 STD-553 STD-29 STD-692 STD-599 STD-336 40507 61165 60053 518 66528 66527 65442 65441 60616 60546 60329 60401