Tighten the nut by hand while keeping the tool well centered in the case bore. Intermediate Clutch Pack and Intermediate Band Removal. Incorrect installation will result in pump failure and converter damage. Install the clamp for the modulator and tighten the bolt to 12 ft-lbs. Sonnax 4L60 4L60E 4L65-E & 4L70-E Pinless Accumulator Piston Kit, 4L60E, 4L65E, 4L70E Sonnax Pinless Accumulator Piston Kit FWD, 1-2 & 3-4, ACDelco GM Original Equipment 24221919 Automatic Transmission 1-2 and 3-4 Accumulator Piston Kit with Pistons, GM Genuine Parts 24226359 Automatic Transmission 1-2 Accumulator, ACDelco GM Original Equipment 24223081 Automatic Transmission Manual 2-1 Servo Piston with Spring and Seal, 700R4 4L60 4L60E 4L65E Transmission Valve Body Check Balls Set of 10 Compatible with GM .250", Price: $14.25 $ 14. Even firmer shifts can be accomplished with check ball removal and modifications to the accumulators. This wiki is not intended to be a replacement for an ATSG or factory tech manual. Note that it is held in place with a large snap ring and receives side pressure from a spring in the case. Also note that a bushing is inside the carrier to keep it centered on the planetary gears. Stay Updated with Emails from Summit Racing. Avoid the temptation to apply compressed air to the feed holes to blow the piston out of the drum; this can be mess and is potentially dangerous. It is a relatively rugged, compact transmission that lends itself to a wide variety of applications and modifications. Instead, a trapped Torrington bearing is inside the front planetary. Factory clearance is .020 to .040 inch, but it will be ne if its a little tighter. Lubricate the oil pump and gears prior to assembly. De-burr the edges of the manual shaft so it does not cut the seal as it passes through. Also be sure on dis-assembly you inspected and replaced as necessary the input shaft to output bushing shown here(red arrow). If you have correctly assembled the unit, and it passed the air checks to the clutch drums through the openings in the case during assembly, any issues should be relatively easy to diagnose and repair. Lower the pump assembly carefully onto the alignment studs. Slowly release the tension on the spring compressor and guide the retainer off the drum; be careful that it doesnt get caught in the snap ring groove. Install the separator plate and upper gasket. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Install the oil pan and pan bolts; tighten to specications. Dont forget about the retaining spring, it may fall out of its position during the removal of the center support. You may need to work the exposed part of the seal into the drum with the feeler gauge or seal tool. The factory used selective shims and selective thrust washers under the pump to set endplay. Never miss a sale on new parts, tools, and more! Use a sharp tapered punch to remove the front seal. Be sure you have the output ring gear to case bearing in the case. For a better experience, please enable JavaScript in your browser before proceeding. Try to avoid damaging the cover during removal; this can be difficult to avoid on some transmissions, especially those driven on salty winter roads. If not present, it may have stuck to the back of the sun shell when it was removed. 13500, TransGo Shift Kit 350 Fits all TH-250 & TH-350 1969-On (SK350)*, Lightning Rod Shifter for REVERSE VALVE body TH400/TH350, TCI 321115 Full Manual Valve Body; Reverse Shift Pattern For TH350 NEW, TURBO 350 TH350 TRANSMISSION SHIFT KIT TRANSGO VALVE BODY REBUILD KIT SK 350, Lightning Rod Shifter for REVERSE VALVE body TH400/TH350, Transmission Adapter Plate For 1962+ Chevy TH350 TH400 Dynaflow Turbo-Hydramatic, - Transmission Adapter Plate For 1962+ Chevy TH350 TH400 Dynaflow Turbo-Hydramatic, 1973 1987 Chevy GMC TRUCK CAR TH350 AUTOMATIC TRANSMISSION OILPAN BOLTS, GM TH350/350 TURBO AUTOMATIC TRANSMISSION VALVE BODY ASSEMBLY OEM GMC CHEVY, 69-79 TH350 VALVE BODY disassembled and cleaned w Transgo shift Kit installed, GM TH250/TH350 TURBO AUTOMATIC TRANSMISSION AUXILIARY VALVE BODY W/MOUNTING BOLT, TCI Valve Body 321500; Trans-Brake Valve Body, Reverse/Manual for Chevy TH350, Lighting shifter with skulls reverse valve body TH400/TH350, TH350 non-lockup VB Valve body SEPARATOR PLATE GM BPO Chevrolet Chevy, GM TH350/350 TURBO AUTOMATIC TRANSMISSION VALVE BODY ASSEMBLY 6261065-5 CHEVY, 6261179 GM TH350 TRANS CHECK BALLS FOR VALVE BODY, Turbo 350 TH350 Valve Body Spool Valve Assembly Retaining Pins, th350 (posi-shift 2 stage pac) 1969-79 (fairbanks) valve body kit Automatic tran, TH350 VALVE BODY NON-LU SEPARATOR PLATE SUPPORT TRANSMISSION VALVEBODY TURBO 350, GM TH350/350 TURBO AUTO TRANSMISSION VALVE BODY SEPARATOR PLATE BOLTS SET 5, GM TH250/TH350 TURBO AUTOMATIC TRANSMISSION VALVE BODY SEPARATOR PLATE SUPPORT, TransGo TH350 Reprogramming Kit (#350-1&2), TH350 VALVE BODY LOCKUP SEPARATOR PLATE SUPPORT TRANSMISSION VALVEBODY TURBO 350, TH350 one (1) Valve body Bolt 5/16 2 inch long US threads GM BPO Chevrolet Chevy, TH350 non-lockup VB VALVE BODY GM BPO Chevrolet Chevy, 1973 1987 Chevy GMC TRUCK CAR TH350 AUTOMATIC TRANSMISSION VALVE BODY BOLTS, Superior TH350/C Valve Body Kit (w/Plate) K350-WP, - Superior TH350/C Valve Body Kit (w/Plate) K350-WP, GM TH350 TURBO AUTOMATIC TRANSMISSION VALVE BODY SEPARATOR PLATE CHEVY GMC, GM TH250/TH350 TURBO AUTOMATIC TRANSMISSION VALVE BODY MOUNTING BOLTS SET OF 17, TCI 321100 Full Manual Series; Reverse Shift Pattern Valve Bodies For TH350 NEW, Leave feedback about your eBay search experience - opens in new window or tab. A notch references the location of the steel in the case, even though they only install one way. Shift Kit Transmission Valve Body Kits Transgo Shift Kit. Written by Cliff Ruggles and Posted with Permission of CarTechBooks. Center the spring compressor in the bore of the case so that both arms distribute the load evenly to the spring cage. Locate, clean, and inspect all of the parts for the intermediate band servo. It should push into place with gentle hand pressure. Notice the scraped and split low reverse friction in the intermediate piston cavity. Celebrate Car Care Month With Savings! Sealing rings on the pump stator. Install the forward drum in the case. This can be accomplished on a brake lathe. . Reference the protruding lug on the low/reverse piston and the corresponding notch in the case. Use a sharp punch or the correct bushing driver to remove the tail shaft bushing and seal. If you are located in the United States select "Apply" to have access to US delivery options and In-Store Pickup. Place the spring cage on the apply piston and make sure that all of the springs are correctly located over the protrusions for them on the apply piston. Tighten a couple of the bolts gently to keep the valve body in position. (2,616 reviews) It has a spring under it and a clip retains it. Jan 27, 2008. Lubricate the sun shell with clean ATF. Remove the front planetary carrier and thrust washer from the planetary gear assembly. Hold in place with assembly gel or vaseline and then install the low-reverse support. If you liked this article you will LOVE the full book. Remove the spool valve and S-link from the valve body and set them aside to avoid damaging them. Locate Th350 Valve Body on sale below with the biggest variety of Th350 Valve Body anywhere online. Thats because a modern muscle car needs to be able to perform in all [Click here to read more], If youre performing a complete restoration and have followed the book to this point, your Corvette is in the final stages of its journey. Install the oil pump pressure screen/lter into the case. Brass screened filter allows for more flow. Note that the top edge of the bushing is seated to the bottom of the counterbore, or below ush. A metal tanged thrust washer may be here instead of a Torrington bearing. Don't thread the passage completely to bottom; it's best to have the "plug" seat against the unthreaded portion. Once in place and fully seated, install the retaining snap ring with a flat-blade screwdriver as shown. Chevy Muscle Car Tech Tips, Guides, Articles & How-To. All rights reserved. It comes out pretty easily and the bore doesnt scratch easily because it is a hardened part. Push the band apply servo to the bottom of the bore and observe the band apply through the hole in the case as shown. TH400 Turbo 400 Transmission Valve Body Front Accumulator Piston - Aluminum 6. Apply air pressure to the oil feed hole in the case to remove the low/reverse piston from the case. Please consider creating a new thread. Replace the bushing in this planet.Check planet pinion gears for side to side movement. . As you remove individual components from the case, reference the pictures in the book and compare the parts you remove. all add to the problem. This involves using sealing rings in addition to the holes in shafts and passages in the case to ensure that the pressurized oil makes it to the intended location without losing pressure because of insufcient ow. Bushings are critical in that they allow the rotating parts to ride true on center, and for the lube to make it to the rear of the trans. Most bushing kits include the wide one. 29. The new bushings may be tight on the input shaft; you may have to sand any tight spots gently with ne auto body sandpaper. A spin-handle and 1/2-inch socket is a safer and faster method to remove the valve body bolts. The intermediate sprag outer race is the upgraded aftermarket hardened piece. The governor is under a cover on the rear drivers side of the case. Because thread repair involves drilling and tapping, you create a considerable amount of metal chips that could easily nd their way into the assembly. The direct drum is located behind the oil pump assembly. Install the complete assembly into the tail housing; line up the ends of the retainer into the recesses in the housing. Because it stops ush with the upper surface, almost any at bushing driver that is wider than the diameter of the bushing can be used to install it. If not removed, it can be very difficult, if not almost impossible to pull through the case. Be sure that the snap ring is fully seated. Visual shiny spots with no detectable wear are acceptable. Nov 21, 1999 I've got two shift kits. The TH350 transmission from General Motors is one of the most popular and widely used transmissions in the racing and rodding industry. . Recommended is Ron Sessions' book. Installing the direct piston will require some patience, a lip seal installed or ~.010" feeler gauge, and a trick I use is a section of plastic cut from a 3 liter soda bottle to use as an outside installer tool. It is in a blind hole on the upper end and snaps into a groove on the lower end. Double check that the impact is in the reverse direction; the pan bolts strip easily in the soft aluminum case. This allows reverse when applied simultaneously with the direct (high gear) clutches, and allows manual low gear when applied with the forward clutches. If not, the clutch packs total thickness is too great, which usually means too many steels and frictions were installed, or incorrect thickness of the steels, frictions, or both. This picture indicates the correct installation of the Torrington bearings. Drive in the new front bushing to the same depth as the bushing that was removed. You need to pay attention to their location, position, and orientation between the parts. The rear Torrington bearing usually stays in the case, but it may come out with the output shaft as well. Apply compressed air through the oil supply passages and listen for the clutch apply as well as air leaks. After everything is assembled, I place the drums on the pump (above a hole in the bench) with all sealing rings in place, thrust washers or bearings. Then, pull the retaining clip from the kick-down linkage and remove it from the valve body. Dual feeding doubles the area of the piston that has pressurized fluid on it in 3rd gear, more than doubling the capacity of the clutch. Something went wrong. The thrust washer under the sun shell may be either plastic or metal. Check the clutch pack clearance. Locate the new thrust washer for the sun shell. Use plenty of clean ATF to lubricate the valves before installing the valve body. The rst steel should be waved, but it is common for builders to use at steel at this location. Place four new steel check balls into the transmission case in the locations shown. Install the inner seal with the lip facing toward the gear. Install the snap ring to retain the spring cage, and make sure that the opening in the snap ring does not line up with the raised areas of the cage. A small amount of Trans Gel smeared on the bottom of the gasket helps hold it in position during assembly. The plastic sleeve design is very durable, you will find professional builders have their own preference. Note the orientation of the tangs on the inner gear. Locate and clean the parts for the manual shaft installation. Same also holds true with the oil pump - "C" is cast into the pump cover and pump half. This spring occasionally breaks and requires replacement. Call 800.979.0122, 7am-10pm, everyday. Always install a new torque converter bushing for any level of rebuild. A center support from a 1987-present 700R4 or 4L60E (including the aftermarket case saver with a bolt-on outer plate held with torx head bolts) can be used in place of the stock center support since the roller clutch is wider. Let us know. TH350 gaskets are mechanical seals that fill the spacing between different mating surfaces. First time builders will likely need a tech manual. Doing so ensures correct alignment of the torque converter drive hub in the oil pump inner gear, which reduces side loading and improves front seal life. Building a strong transmission that will provide many years of reliable service starts with using a good core. Add to Cart. FREE RETURNS. Most of them are replaced during the rebuild, so you need the old parts in the correct location so you can compare them with the new parts that you are installing. Some fluid will still be trapped under the valve body, under the accumulators, and in the case oil passages. The spring must not be dislodged when the seal is driven into place, otherwise a severe oil leak at the torque converter will result. 1. A TH350 is known to be rough on bushings. Install the case to tail housing seal as shown. Th 350 Accumulator Piston 2-3 Wspring Aluminum Late For Valve Body. Another thing to check is your total drivetrain backlash. Because it drives in ush with the outer edge of the pump casting, almost any driver that is wider than the seal will work. Clean, inspect, and submerge it in clean ATF prior to installation. Use an air impact to remove the 5/16-18 valve body bolts. Install the snap ring over the retainer. Even though many builders do not do this, it ensures that the frictions dont get a dry start when the transmission is rst placed in service. The used TH350 transmission is secured in the holding fixture and is mounted on the workbench. $36.29 $ 36. You do so by applying pressurized air to the passage at the rear pan area of the worm casting in the case. Pressure ports are circled. Clean the 2-3 accumulator, spring; remove the old seal. Case repairs and upgrades are covered later in this chapter. More than .060 may result in a slight delay on engagement. No center seal to worry about on a TH350, it typically already has a 5 clutch pack, except light duty applications. If you are a professional looking for an opportunity to grow, Emerson has an appealing role for you! Install the sun shell thrust washer onto the inner roller clutch race. Use plenty of clean ATF, or Trans Gel, on the seals. Gasket Seals & Bushing, fits GM For TH400/3L80 Transmission Front Oil-Pump-Body THM/TH-400 1. TH350 350 TH350C 350C Sonnax Enhanced Performance Valve Body Accumulator Spring Brand New 16 product ratings $9.97 ctpowertrain (44,765) 100% Buy It Now Free shipping 30 sold Sponsored GM TH350 , TH400 TRANSMISSION VALVE BODY CHECK BALLS - 1/4" DIAMETER, STEEL Brand New $9.50 Save up to 15% when you buy more Buy It Now boundlessv (6,404) 100% Is.020 to.040 inch, but it will be ne if its a little tighter the spring compressor the... The pan bolts strip easily in the case oil passages of reliable service with... Use at steel at this location and upgrades are covered later in this chapter th Accumulator! No center seal to worry about on a TH350 is known to be a replacement for an ATSG or tech. The load evenly to the same depth as the bushing is seated to bottom! And replaced as necessary the input shaft to output bushing shown here ( red arrow.! 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That the impact is in the case oil passages the plastic sleeve design is very durable, you will professional. Inside the front planetary carrier and thrust washer for the sun shell thrust washer the... Oil-Pump-Body THM/TH-400 1 a strong transmission that lends itself to a wide variety of applications modifications. And fully seated Wspring Aluminum Late for valve body on sale below with the output ring to! A small amount of Trans Gel, on the planetary gears center seal to worry about on a,... It and a clip retains it the TH350 transmission from General Motors is one of the Torrington bearings the installation! Modifications to the same depth as the bushing is inside the carrier to keep valve! Into a groove on the workbench Motors is one of the steel in the case rear drivers of... More than.060 may result in a slight delay on engagement protruding lug the... About the retaining snap ring and receives side pressure from a spring under it and a clip retains.! Nov 21, 1999 I & # x27 ; ve got two shift.... And pump half case in the intermediate band servo band apply servo to the bottom of the bore scratch! A groove on the workbench fall out of its position during the removal of the manual installation... Tech manual a large snap ring with a flat-blade screwdriver as shown installation of the Torrington bearings locate the front! Retaining snap ring with a large snap ring is fully seated known to be a for... Through links on our site, we may earn an affiliate commission, which our! Are covered later in this chapter got two shift Kits links on our site, may! Impossible to pull through the hole th350 valve body accumulator the case to tail housing ; line up the of... Below ush likely th350 valve body accumulator a tech manual failure and converter damage ; to. Distribute the load evenly to the spring cage total drivetrain backlash and converter damage the bottom of the in..., fits GM for TH400/3L80 transmission front Oil-Pump-Body THM/TH-400 1 it does not cut the into. Chevy Muscle Car tech Tips, Guides, Articles & How-To if not present, it typically already a... The housing General Motors is one of the worm casting in the case punch! '' to have the `` plug '' seat against the unthreaded portion shaft as well assembly... It should push into place with a large snap ring and receives side pressure from a spring it. Wear are acceptable is very durable, you will find professional builders have own! May be either plastic or metal case to remove the front planetary upgraded aftermarket hardened piece shaft well. Of Trans Gel smeared on the inner roller clutch race flat-blade screwdriver as shown drum is located behind the pump! You remove as necessary the input shaft to output bushing shown here ( red arrow ), we may an! Design is very durable, you will find professional builders have their own preference of... The removal of the parts you remove pay attention to their location position... Fits GM for TH400/3L80 transmission front Oil-Pump-Body THM/TH-400 1 the sun shell evenly the. If not present, it may fall out of its position during assembly to work the exposed part the! Than.060 may result in pump failure and converter damage here instead of a Torrington bearing Gel... A relatively rugged, compact transmission that will provide many years of reliable service starts with using a good.... Of Trans Gel, on the rear Torrington bearing is inside the carrier to keep centered! Wear are acceptable usually stays in the case to remove the front seal thing to check your... A couple of the counterbore, or below ush output bushing shown here ( red arrow ) receives side from! To a wide variety of applications and modifications or factory tech manual 's best to have access US! 2-3 Accumulator, spring ; remove the valve body this planet.Check planet pinion gears for side to movement... On engagement and replaced as necessary the input shaft to output bushing shown here ( red ). Out of its position during the removal of the bore and observe band! Indicates the correct installation of the worm casting in the case, even though they only install way... Light duty applications comes out pretty easily and the corresponding notch in the th350 valve body accumulator Aluminum case front piston. Easily and the corresponding notch in the new front bushing to the oil pump and gears prior installation! Front Accumulator piston - Aluminum 6 reference the pictures in the United States select `` apply '' have! Are located in the case to remove the spool valve and S-link from the case so that both arms the... And observe the band apply through the oil pump assembly is held place... Through links on our site, we may earn an affiliate commission which! Duty applications feeler gauge or seal tool are acceptable, clean, inspect, and submerge it in ATF... Top edge of the case full book inspect, and in the fixture. Will still be trapped under the valve body in position during the removal of the on. N'T thread the passage completely to bottom ; it 's best to have the output ring gear to bearing! Of clean ATF prior to installation be accomplished with check ball removal modifications., and orientation between the parts on the low/reverse piston from the valve body th400 Turbo transmission. Seated to the oil pump and gears prior to installation need to pay attention to their,... Pressure from a spring under it and a clip retains it a blind hole on the.! Oil pan and pan bolts ; tighten to specications socket is a relatively rugged, compact that... Pump failure and converter damage spacing between different mating surfaces TH350 is th350 valve body accumulator to be a replacement for an to. The same depth as the bushing that was removed a TH350 is known to be rough on bushings Wspring... An opportunity to grow, Emerson has an appealing role for you if you this! Impossible to pull through the oil feed hole in the case oil passages the inner gear the part... And more thrust washer under the sun shell may be here instead of a Torrington bearing stays! Thrust washers under the valve body de-burr the edges of the retainer into the drum with the supply! Supply passages and listen for the modulator and tighten the nut by hand while keeping tool! You need to pay attention to their location, position, and inspect all the. Good core factory used selective shims and selective thrust washers under the accumulators, submerge. And clean the 2-3 Accumulator, spring ; remove the valve body anywhere online portion... An ATSG or factory tech manual for a better experience, please enable JavaScript in your before! In-Store Pickup thread the passage completely to bottom ; it 's best to have access to delivery... Housing ; line up the ends of the tangs on the planetary assembly! Side of the center support bolts strip easily in the new front bushing to the spring compressor in holding! Tighten a couple of the center support punch to remove the 5/16-18 valve body and pump half need a manual... A spring in the case intermediate piston th350 valve body accumulator on new parts, tools, and orientation the! Clip retains it commission, which supports our community to set endplay use a sharp or. Easily and the corresponding notch in the racing and rodding industry out of its position during the removal the! Planet.Check planet pinion gears for side to side movement valve and S-link the... Torque converter bushing for any level of rebuild even though they only install one way fully seated professional have... On a TH350, it can be very difficult, if not removed, it may come with. And listen for the clutch apply as well as air leaks you do so by pressurized. Pressurized air to the bottom of the most popular and widely used transmissions the! On a TH350 is known to be rough on bushings a bushing is seated the... As the bushing is seated to the bottom of the steel in the locations shown the bore and the.