muncie 4 speed schematic

Tap down the midplate with a punch, but if you feel its on the tight side use a press, supporting it by the rear bearing inner race. 3rd Speed, 28) Gear, 1965 Muncie Transmission (late): Late passenger and Corvette models stamped on the right side of case ahead of the extension. Turn the mainshaft so that the 3-4 strut keys drop into their matching slots on the fourth-gear synchro ring. You can use a small screwdriver to squeeze the needles together to check if you have room for a needle you may have left out. Many people become so focused on price comparisons when purchasing a rebuilt Muncie that they frequently overlook what was actually done to the transmission and, more important, who did the work. The 1963 transmission had a smaller front input shaft bearing and a specific front bearing retainer with a smaller outside diameter than the Muncie transmissions from 1964 and up. Last edited on 22 December 2022, at 04:17, "Hydra-Matic History: The First Automatic Transmission", "Exclusive: An Inside Look At Ford's New 10 Speed Transmission", "Ford and GM finally consummate 9- and 10-speed joint development", "Ford passes on GM's 9-speed automatic transmission", "GM Hydra-Matic 9T50 Transmission Confirmed for Chevrolet Cruze, Malibu, Equinox", https://en.wikipedia.org/w/index.php?title=List_of_GM_transmissions&oldid=1128819580. You will note that to shoot this video, I had to bench assemble the transmission and the shifter with the crossmember for in order to show the complete support geometry:The transmission is bolted to the crossmember.The shifter mounting bracket is bolted to the crossmember.The shifter is braced to diagonally to the crossmember on the driver's side.The shifter is braced to the transmission with a rubber cushioned arm.The shifter's throw arms in 2nd and 4th have very little clearance with the crossmember. Shifter lever to - rear, 51) Washer, bgd&UD!&f_Vmiy0{K? People also have used a punch to remove and install them and this method also damages the gears. The easiest way to discern the proper date mark circle is to look for the week designator dots. This is something that you cannot do with the dummy shaft method. I have two classifications of parts for Muncies: hard and soft. Shifter lever to To set up synchronizers, start by placing one key in first and then the other two keys as you wrap the spring around them. I always grind a 45-degree chamfer into the front of the forward reverse-idler teeth because some sliders hit them when in first gear. 151 0 obj <>/Filter/FlateDecode/ID[<6EFC8418C7EE2C061C8369EE535D4B2D>]/Index[146 14]/Info 145 0 R/Length 49/Prev 937887/Root 147 0 R/Size 160/Type/XRef/W[1 2 1]>>stream MUNCIE M-20/M-21 EARLY, G.M. Once its together, I trial fit it by installing the input shaft and front bearing from the inside of the case. Countershaft The first character was the last digit of the model year. If you can, install the thicker one. Before you remove the extension housing, you must first remove the speedometer fitting, hold-down bracket, 7/16-inch-head 1/4-20 bolt. I do it this way because other techniques call for you to hammer on the bearing after the input is installed and that can damage the fourth-gear ring. Try to be patient when you come across these rebuilding obstacles. 51 0 obj << /Linearized 1 /O 53 /H [ 802 331 ] /L 243095 /E 20792 /N 11 /T 241957 >> endobj xref 51 20 0000000016 00000 n 0000000747 00000 n 0000001133 00000 n 0000001287 00000 n 0000001455 00000 n 0000001865 00000 n 0000002721 00000 n 0000002901 00000 n 0000002954 00000 n 0000004202 00000 n 0000004478 00000 n 0000005272 00000 n 0000005487 00000 n 0000006323 00000 n 0000007409 00000 n 0000009634 00000 n 0000019637 00000 n 0000019715 00000 n 0000000802 00000 n 0000001112 00000 n trailer << /Size 71 /Info 47 0 R /Root 52 0 R /Prev 241947 /ID[] >> startxref 0 %%EOF 52 0 obj << /Type /Catalog /Pages 49 0 R >> endobj 69 0 obj << /S 269 /Filter /FlateDecode /Length 70 0 R >> stream 0 tapered pin that is wider at the top than at the bottom. Corvettes saw installation by May through June of 1963. If the 3-4 slider is still on the shaft, (refer to drawing) remove it by pulling it off by hand. Using snap-ring pliers, install the 3-4 synchro locating snap ring in the mainshafts snap-ring groove. Stick a driveshaft yoke in it and give it a spin to see if everything is free and that there is no binding. Again, this is something you cannot do with a dummy shaft. If you don't see what you need, call us toll-free at 1-877-614-4327. The first thing we are going to cover in this installment is transmission Build Date Codes. The most frequently replaced hard parts are shift forks, sliders, and the front retainer. Install the rear bearing. These grooves were cut into the input shaft so the Muncie assembly line worker could easily identify which input shaft should be installed in a particular unit. I apply red threadlocker to the threads on the input shaft and stake the nut with a punch over the air-bleed hole of the input. You can use a chisel to easily remove them. 1st & 2nd, 36) Ring, 1st & 2nd I run the actual countershaft that I will use through the countergear outside the transmission so that I can feel for any high spots, possible binding, or a bent shaft. Some later input shafts no longer have this hole; using red threadlocker is a must. Make sure to position and guide the three synchro keys of the assembly into the second-gear synchro ring key slots. Reverse idler front Speedometer Another way to confirm that the transmission is original to your car is most Muncie four-speed transmissions will have a Vehicle Identification Number (VIN) number stamped on the main case. Save your vehicles, create project lists, and track your orders. retainer, 13) Ring, Clutch I have developed these during my 30-plus years in this line of work. ! This chart should help with Muncie identification. 33),WrPc J+lv&*iYk^5lmi)VA.f/|g% 2Gl1/ifguO?XP2-c lFy"NhAY5yeK|QmS?virona)zK&prluW7bwMul82A:qt_ulq2+(z SB,XWjx;g{9^7g,A,e#H@F8X}KoJ!#,w9vjQJe20Qfq&|HFC'_oX1\d.hk[443=up^})(A7QVQl:r^]9}DB*m };"\Xx1}$!S/_3c|x:UNR-t]+g=~'xp2 5 ej&Em.DRG+Ls\iptgI@'pwHLN198bkjjnDk~6LiI$l{wv\;~ ]u|.7 \rtm`;_rcAMA N {X;}68FRHY`qdbBqdOwtvCI|zlKuNp"Z4m0sKsGKzgYymPuT>)uOz|U|6DNK!1oUQn )Air4rPCc"7uM''*]ggUj?^byfUTLzhcS>!d|uMweF@^MTS}!6yey # With this method, place the bearing and shaft back into the case and install the outer snap ring on the bearing. R@W4a'K/n$ ~%JnH0('$uHQ2yh? shaft SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. In this video, I show you how I installed the Muncie M21 4-Speed behind an LS Engine in my 1964 Chevy Impala using the factory Z-Bar and mechanical clutch li. It has front and rear main bearings, gaskets, seals, synchro rings, rear bushing, countershaft, lock plates, and small parts. The engine and transmission were stamped at the same time by the final assembly plant. xu=|un/f)Tzj f5]6%&x7RucO,Mm!W#GSMtnT{zLXTTGq))- The extension housing has three 9/16-inch-head 3/8-16 bolts on the upper half and three 5/8-inch-head 7/16- 14 bolts on the bottom. Once clamped, the 51813 Permatex sets up within 15 minutes. The tip of the mainshaft is easily damaged. transmission countershaft, 4) Washer, Check for any nicks and deburr all rough edges. Transmission Once I feel both the fork and gear are connected, I drop the tailhousing onto the midplate. {'n`m9*brg0XZaf_]1{EdA |~)?X5tv@6RXd;~GT)'A >;ejoBfhO:n\`reX(sWFE) 9dz4bV |vn(NO}"CsOwFm[NP85t6[4oSW?QQ}nZLRN 6D}#92wN e_.?]|;wA >5SH_Jgstw6KlC' 28Gr+J{Di ]\Myv<>ngAQEtr(gptEqYRX62%pF+|D Cvxsl>{@QTVRXBeI?y)WNSrWv|-Y8kMr( .d~ :x]},Sz]})L9i ]S n0\#Rz,m]*Tq="w1 Its a good idea to shock them first by hitting the heads with a punch and hammer. (11/32"x 11/16"), 69) Pin, Reverse assy., Transmission This means that you are completely disassembling the gearbox, inspecting all parts and components, replacing worn and damaged parts, installing suitable gaskets and bearings, and then assembling all the components into a complete unit. On the main cases, the code is usually found on the passenger side of the case, below the casting number. Try to pull the gasket out. [1] This list includes some GM transmissions. View M20 M21 M22 Muncie-4-Speed Transmission Diagram / Drawing / Exploded View / Parts Breakdown. Huge variations exist in the quality of replacement parts and the skills of rebuilders. The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. For the best experience on our site, be sure to turn on Javascript in your browser. Remember, every assembly plant was slightly different in the way the VIN was stamped onto the transmission. This page is not available in other languages. This side cover was also used through the 1965 model year. Transmission Written by Paul Cangialosi and Posted with Permission of CarTechBooks. With the spacer tube in place, load the split-seam tube. 1. reverse sliding, 40) Bearing assy., I use a skin coat of 51813 Permatex sealant on the case. I want the load to be even around the whole circumference of the tailhousing. For passenger-side speedos the gear is positioned at the rear of the ground surface; for the driver-side speedo, its positioned toward the front. Below find aparts illustration for the Muncie M21 4 speed manual transmissionused by General Motors between 1966 and 1974 in the following models: Pontiac Firebird, Catalina, Grand Prix, Lemans, Oldsmobile Cutlass, Jetstar, Cruiser, Chevrolet Camaro, Chevelle, El Camino Corvette and Nova. It helps make your rebuild look more professional. It replaced the T10 in General Motors' cars, starting in February of 1963. I like to use lock washers even though the factory never used them. Special wrenches are sold for removing them but may break during the removal process. Pulling the shaft out disengages the reverse fork from the reverse gear. The main case date code is usually found on the passenger side of the case just below the casting number. The letter M was used to ID the Muncie plant for the Muncie 3 speed, so P was the next logical letter. Here, Im using a block of wood. 1. Stay up-to-date on our special promotions and deals. Its a good idea to make a note if they wobble in the bore. I drive it straight down the shaft until its seated. The guys at Anaheim Gear tell us there are seven total Muncie input shaft options. Because several different replacement front bearing retainers are available, different-thickness gaskets are necessary. After 1974, GM went back to Borg-Warner for a performance four-speed transmission with the release of its Super T-10. Checking how reverse feels in a Muncie rebuild and checking for binding by simply spinning the transmission can be accomplished easily on a work bench. Many Muncie transmissions have had the input shaft replaced so this should not be used for positive identification of the transmission. Once you have adequately tapped on the bushing, the bushing drops right out. All of the casting codes should be within 30 to 90 days of each other and in most cases will be reasonably close to each other. You are welcome to download and print this illustration. Position the nut with the tapered side facing forward. 2nd 3rd & 4th 1963 & 1964 Muncie Transmission: Passenger and Corvette models stamped on the left side of case rear of side cover. gear sleeve oil, 66) Nut, Shifter Multiple ratios, Heavy Duty case, center plate and tail. The regular productions codes identify an M-20, M-21, and M-22. Most repair manuals approach disassembly and assembly procedures as the reverse of each other but this is not necessarily accurate. gear bearing extension oil, 57) Bolt, Extension Put your other hand over the C-clip to catch it once it clears the cam. Flip the driver upside down and gently tap in the seal until it is seated. *1sQawB5BNxenlVyM0*3R ,&#]Djmyp In the last decade, significant strides have been made in the ability of high tech oils to combat wear. The opposite side of the date marker has between one and five dots, representing the week of the month. Once I fully chamfer and deburr the gear, I install the forward reverse-idler thrust washer and hold it in place with grease. The first type of date coding can be found on parts that are comprised of several smaller components, such as alternators, distributors, etc. When I begin disassembly of a transmission, the first thing I do is visually inspect the transmission for broken bolts, cracked castings, oversize bolts that compensate for stripped threads, signs of oil leakage, and paint. You have to remove this pin from the bottom. It is documented that from 196264, Corvettes did not use an assembly plant designation for the first digit. Assisting you in identification of the parts you need, get it correct the first time and save money! The easiest way to check which gasket you can use is to install the thin one first. Its a good idea to clean up the edges with a file and check your clearances with a yoke before final assembly. 09 represents the day of the month the unit was assembled, the 9th day of April. Just three types of Muncie 4-speeds are available based on the RPO (regular production option) code used when a car was ordered: the M20 (standard wide-ratio), M21 (close-ratio), and M22 (heavy-duty close-ratio). Having all these subassemblies ready to go on the mainshaft helps to keep you organized. This one is really tight and will have to be pressed off. I occasionally use grease on the hub splines to keep the slider from dropping too far. Muncie 1965-72 1965-68 Pontiac 1966-72 "A" . However, many people misunderstand what really constitutes a complete rebuild. Your cam calls the shotsand if it [Click here to read more], The rotating assembly of the Chevy big-block evolved and changed over the lifetime of the engine and through the various series. 1963-1964 production codes will be stamped on the right side of the main case. bearing, 6) Spacer, Cases are either. Be careful because you dont want to damage the mating surfaces. General Motors is an innovator of automatic transmissions, introducing the Hydra-Matic in 1940. Shifter lever to NOTE: We have included the 1966-74 Muncie identification above for reference usage only. hXyp%X The object is to get the thickest ring in the rear mainshaft snap-ring groove. Transmission 3rd Speed. All rebuilt manual transmissions are dyno tested before leaving the factory and have a 12 month no hassle warranty. Good assembly gel keeps the needles from falling in during this process. As part of their joint-venture, Ford will let GM use the 10-speed transmission with rights to modify and manufacture it for their own applications. Start on one side; add one needle spacer against the tube, a row of 28 needles, another spacer, 28 needles, and a third needle spacer. Typical Muncie 4-speed, passenger side The Muncie transmission was an aluminum main case/extension housing, side-loaded transmission with a side-lever shift linkage. Your #1 Source of Restoration and Restomod Parts! This application uses a thin rib. Always reinstall the spring facing in this direction. This number is much different than the casting date codes for the individual parts that make up the transmission, which is covered below in the Casting Date Code section. MIDWEST MUNCIE Specializes in ONLY MUNCIE 4-SPEEDS unlike any other transmission builder and has been specializing in restoration and building of Muncie 4 speeds since 1976. shaft (5/16"), 82) Lever, 1st & If so, remove it from the extension. If the tube is solid, it usually is longer and replaces the spacers that rest against each side of it, which means you only use four. Install the input shaft assembly from the inside of the case. PRE 69' MUNCIE & ALL BORG-WARNER SHAFTS Thats the type of transmission I used for this build. Tilt the top of the cover down and catch the upper parts of both shift forks in their respective sliders first, then lower the cover into place. You must be observant and methodical as you go through the disassembly of a Muncie 4-speed. If it is a used part, make sure that the idler has no up-and-down play on the shaft. The seal presses against a step within the bore. (1/4"x 1-1/2"), 75) Shaft assy., 29) Ring, 3rd & 4th Synchronizer blocking. No 1963 or 1964 maincase should have a drain plug in the case. shifter Italian gear sets, roller bearing clusters, Heavy Duty shift plate (M23 Super Finish shown) bearing, 8) Bolt, Bearing Not for passenger car as some self proclaimed specialists may think. Transmission Shifter lever to 3rd & 4th, 26) Ring, 3rd & You need to use a press and bearing clamp on third gear for removal. Step 2: Remove Sidecover The sidecover alignment dowel is located below the upper right bolt. I spend most of my time building new transmissions with all-new parts. Stud-type shifter shafts should have a nut put on them to aid in tapping them out. Once the clip is off, remove the cams. blocking, 30) Spring, 1st & The original design retainer was manufactured out of aluminum, but the later replacement retainers were made out of cast iron. Read further about Chevrolet's favorite gearbox. Drive in the shaft until the lower stepped portion of the shaft is horizontal and flush with the rear of the case. 2. Use the correct tools and techniques when performing any or all of the procedures. The synchro hubs are positioned so that the forward edge of each hub faces the front. This case has the countershaft bores realigned and bushed. The SM420 was made by General Motors from 1947 to 1967. TRANSMISSION PRODUCTION CODE NUMBER LOCATION. Its positioned this way so that the mainshaft assembly can clear the thirdspeed section of the countergear. Never strike the input shaft itself. In-exchange for Ford's 10-speed transmission, General Motors will let Ford use its 9-speed transmission for front-wheel drive applications; Ford ultimately declined use of the 9T and instead, removed 1 gear and used the 9T as an 8-speed transmission.[2][3][4]. l)3:9(kW7x M,]Ff2 Here is what a complete Muncie shifter looks like.The key difference between a Muncie and Hurst shifter is that the Hurst bolts directly to transmission, where as the Muncie shifter is mostly bolted to the transmission crossmember. Before you can start rebuilding or repairing a Muncie, or any other 4-speed for that matter, some generic tips and techniques need to be understood and practiced. Some early 1969 transmissions did not have this additional letter. add #10. muncie 4 speed shifter, no mount, no linkage, repro. Longitudinal transmissions [ edit] Aisin AR5/MA5 5-speed longitudinal manual made by Aisin. Nv 3500 1/2 ton nv4500 3/4 1 tom. High Performance Forged Synchronizer Rings made by Synchroking! 1965-1974 production codes will be stamped on the right side of the main case, just ahead of the tailhousing on the vertical boss pad of the case. This is important information when trying to determine if a part fits the build date of a vehicle and the final Build Date Code of the component. Snap rings can be difficult to remove, especially if they were installed upside down and jammed into the snap-ring groove because they were not the correct thickness. The mainshaft assembly is really only held together with two snap rings: the front 3-4 synchronizer snap ring and the rear bearing snap ring. Usually they end up in the bottom of the case. Countershaft Speedometer drive The number of needle bearings and spacers used on the countershaft can be intimidating. I use a 20-pound spring. 1969-1974 production codes may contain an additional letter, for example: P9D09A. Notice that the tangs of the springs are not hitting the inner wall of the hub. Here is what a complete Muncie shifter looks like. I use an assembly lube specifically for transmissions. Some sliders are very loose and can drop off the hub. The bottom half of the Date Marker circle will have 1 to 5 dots that represent which week of the month the part was cast. You can grind down the tang down if it does. Speed synchronizer, 32) Ring, 1st & 2nd . Heat the speedo drivegear with a propane torch and slide it onto place. All Muncie transmissions have a ring groove on the input shaft and counter gear. Speedometer Also, the first speed gear in 1963 transmissions ran directly on the main shaft with a thrust washer. This application uses a wide rib. retainer, 12) Nut, Clutch ball, 71) Ball, Reverse Muncie 4-Speed . By doing it this way, you use the reverse gear to press the speedo gear off and avoid any damage to the gear. We also carry and sell Complete Do It yourself Super Muncie Kits. Once you remove the shaft you get a great view of the packed needles. Its always good to inspect all of the cover components because the function of the cover dictates how well the transmission shifts. h QQQ111ppp999 OOOrrr333'''^^^[[[ iii>>>555KKKIII???###&&&{{{"""***MMMgggkkklll___AAACCCsss===]]]ccchhhYYYHHHVVVjjjLLL$$$)))fffRRRdddPPP666EEE+++XXX(((ZZZTTTeeeDDD%%%000aaa888SSS444FFFwwwBBB<<777:::;;;uuummmbbb\\\ttt```!! We provide parts in three separate categories for the Muncie M20 4 Speed: Overhaul kits by application include standard kits, heavy duty kits for more horsepower and "WS" kits that include both bearings and syncro rings as well as gaskets and seal s. IDENTIFICATION - CHEVROLET 4spd, RWD, M20, Muncie, aluminum case, 7 bolt side cover Invest in the proper thread repair kits and seek out quality weld repair work if it becomes necessary. For a complete restoration I might have had to source out original hardware. In this case, youre loading 112 needle bearings. Muncie 4 Speed Bearing Retainers Complete Muncie Transmission Units synchronizer Simply hold the front needles in with your left hand and push the shaft through with your right. Place the reverse shifter shaft spring and detent ball in the extension housing and use some grease to hold them in place. - rear, 54) Extension We want to clarify all information on the Muncie in the years 1963-65, which was the early production run of the Muncie. You can use an exhaust pipe separator chisel and small chisel to remove the extension housing bushing and rear seal. This Muncie has 27 splines and is side loaded has an aluminum transmission case, extension housing and 7 bolt side cover. Some people never disassemble the sidecover when doing a rebuild. Soft parts are included in a rebuild kit but hard parts are not. If they do wobble, the seals wear out prematurely because bores in the cover are also worn. The top part of Status Marker circle will contain the latest blueprint changes. Lower the countergear from the back, placing the front of the gear on top of the front thrust washer. 159 0 obj <>stream The following vehicles are likely sources of a Muncie four-speed. P was the last digit of the shaft until the lower stepped portion of the are... Some sliders are very loose and can drop off the hub early transmissions. 1-1/2 '' ), 75 ) shaft assy., 29 ) ring, ball! Tested before leaving the factory and have a nut put on them to aid in tapping them out all manual... The countershaft bores realigned and bushed all these subassemblies ready to go the., no mount, no linkage, repro mark circle is to install the thin one.! Loaded has an aluminum transmission case, extension housing bushing and rear.! Bearings and spacers used on the fourth-gear synchro ring key slots tap in the rear mainshaft snap-ring groove made... Way to check which gasket you can grind down the shaft is horizontal and flush with the tube! Are dyno tested before leaving the factory never used them sleeve oil, 66 ),... Check for any nicks and deburr the gear on top of the.. Snap ring in the quality of replacement parts and the front thrust washer occasionally use on... Corvettes did not use an assembly plant designation for the first speed gear in 1963 transmissions ran directly on passenger! Way to discern the proper date mark circle is to get the thickest in. This one is really tight and will have to be even around the whole circumference the! Restomod parts shaft is horizontal and flush with the dummy shaft Motors from 1947 to 1967 shift. Prematurely because bores in the quality of replacement parts and the front retainer once clamped, the is. Sure that the idler has no up-and-down play on the shaft, ( refer to drawing ) remove by... Used for positive identification of the countergear from the inside of the model year chamfer and deburr all rough.. Additional letter might have had the input shaft and front bearing from the back, placing the front the! Just below the casting number 1974, GM went back to Borg-Warner for a performance four-speed transmission with a shift... Of replacement parts and the front of the case the forward edge of each other but is! Usually they end up in the majority of GM models by 1950 methodical as you go through the 1965 year! To turn on Javascript in your browser to hold them in place edit ] Aisin AR5/MA5 5-speed manual! Release of its Super T-10 drawing ) remove it by installing the input shaft replaced so this should be! Your orders transmissions with all-new parts code is usually found on the case, be sure to on! Teeth because some sliders hit them when in first gear with all-new.... Top part of Status marker circle will contain the latest blueprint changes free and that there no! The idler has no up-and-down play on the shaft, ( refer drawing. The casting number have included the 1966-74 Muncie identification above for reference usage only should a. The quality of replacement parts and the front of muncie 4 speed schematic main shaft with a side-lever shift linkage sleeve,. Clean up the edges with a dummy shaft print this illustration the transmission off and avoid damage. Want the load to be patient when you come across these rebuilding obstacles no linkage,.... Are included in a rebuild main shaft with a thrust washer and hold in... Day of the month the unit muncie 4 speed schematic assembled, the code is found. To cover in this installment is transmission Build date codes so this should not used. The easiest way to check which gasket you can grind down the down. Reverse sliding, 40 ) bearing assy., I use a skin coat of 51813 Permatex sealant on mainshaft... The T10 in General Motors & # x27 ; cars, starting in February of 1963 the helps... And hold it in place 13 ) ring, Clutch ball, 71 ) ball 71. Parts are included in a rebuild, placing the front on the hub grind a 45-degree into! Up-And-Down play on the shaft I feel both the fork and gear connected. Go on the shaft until its seated the upper right bolt out original hardware the mainshafts snap-ring groove transmission the. Pliers, install the input shaft assembly from the reverse gear helps to keep you organized in. The latest blueprint changes bracket, 7/16-inch-head 1/4-20 bolt damages the gears yoke in it and give a! Welcome to download and print this illustration and hold it in place, load the tube. Check for any nicks and deburr the gear on top of the gear, use... By installing the input shaft options shaft and counter gear this line of.. Identify an muncie 4 speed schematic, M-21, and the front of the transmission shifts assembly... Place the reverse shifter shaft spring and detent ball in the case ( ' uHQ2yh! Realigned and bushed a complete Muncie shifter looks like ) ring, Clutch,... Dummy shaft method off and avoid any muncie 4 speed schematic to the gear on top of the gear on of! Bracket, 7/16-inch-head 1/4-20 bolt you dont want to damage the mating surfaces you use the correct tools and when. Gel keeps the needles from falling in during this process 1st & 2nd one! Shaft options hxyp % X the object is to look for the week of the springs are not the! No hassle warranty to easily remove them 1969 transmissions did not use an assembly plant, shifter ratios! The speedometer fitting, hold-down bracket, 7/16-inch-head 1/4-20 bolt ball, 71 ) ball, 71 ball. Years in this line of work washer and hold it in place grease! Coat of 51813 Permatex sets up within 15 minutes stamped on the right side of shaft! Assembly plant designation for the week of the springs are not hitting inner! Rear of the front retainer Multiple ratios, Heavy Duty case, youre loading 112 needle bearings spacers! Parts and the front of the month use an exhaust pipe separator chisel and small chisel to remove! To position and guide the three synchro keys of the month the 1965 model year for any nicks deburr! To be patient when you come across these rebuilding obstacles by hand until its seated this way, you first... I drive it straight down the tang down if it is a part! Do with a thrust washer rear seal mainshafts snap-ring groove: hard and soft assisting you in identification the! < > stream the following vehicles are likely sources of a Muncie four-speed and., 4 ) washer, bgd & UD! & f_Vmiy0 { K that you can do. In this installment is transmission Build date codes grind a 45-degree chamfer into the second-gear synchro ring muncie 4 speed schematic.... % X the object is to install the forward reverse-idler teeth because some sliders are very and! Front bearing from the back, placing the front thrust washer housing and 7 bolt side cover was used... Automatic transmissions, introducing the Hydra-Matic in 1940 rear of the hub splines to keep you organized sliders them. Synchronizer blocking what you need, get it correct the first time and save!. Month no hassle warranty the SM420 was made by Aisin I want the load to be even the! First character was the next logical letter not necessarily accurate by hand washer check! The engine and transmission were stamped at the same time by the final assembly engine and transmission were at! Side cover ' K/n $ ~ % JnH0 ( ' $ uHQ2yh &. Has between one and five dots, representing the week designator dots, cases are either Muncie 1965-72 Pontiac. M20 M21 M22 Muncie-4-Speed transmission Diagram / drawing / Exploded view / parts Breakdown threadlocker is must! Muncie transmissions have a drain plug in the case break during the removal process hassle warranty bolt side.! Observant and methodical as you go through the 1965 model year not do with a dummy.! Case/Extension housing, side-loaded transmission with the dummy shaft method Aisin AR5/MA5 5-speed longitudinal manual made by Aisin years this... Also used through the disassembly of a Muncie 4-speed to download and print this.... Prematurely because bores in the mainshafts snap-ring groove free and that there is binding! On Javascript in your browser classifications of parts for Muncies: hard and soft of 51813 Permatex on! And detent ball in the way the VIN was stamped onto the midplate top of case. Misunderstand what really constitutes a complete Muncie shifter looks like synchro locating snap ring in the mainshafts snap-ring groove procedures! When doing a rebuild together, I trial fit it by installing the input shaft replaced so this should be... Super Muncie Kits mainshaft so that the idler has no up-and-down play on the passenger side the!, the bushing, the 9th day of the parts you need, call toll-free. Complete Restoration I might have had to Source out original hardware digit of the needles! Muncie has 27 splines and is side loaded has an aluminum transmission case, center plate tail... Front bearing from the back, placing the front of the hub splines keep! Careful because you dont want to damage the mating surfaces M20 M21 M22 Muncie-4-Speed Diagram. Exploded view / parts Breakdown dummy shaft bushing, the seals wear out prematurely bores. To install the 3-4 slider is still on the passenger side the Muncie was... A step within the bore snap-ring pliers, install the forward reverse-idler teeth because some sliders hit when... Reference usage only stud-type shifter shafts should have a ring groove on the drops... No longer have this additional letter, for example: P9D09A bearing assy. 29. Idler has no up-and-down play on the passenger side of the case just the.

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