Locate the inner lower bushing to the same depth as the bushing that was removed. Having all the parts cleaned and ready to go reduces the amount of time that the case and parts are exposed to open air. Note the orientation of the tangs on the inner gear. Note that there are two types of carriers. You will see pressure here in all gears for most valve body configurations. The bad news is that most were built more than 50 years ago and are showing their age, and many original blocks [Click here to read more], No amount of effort spent on building a custom high-performance Quadrajet carburetor can be successful unless we are working with a correctly rebuilt carburetor. At least two of the holes are threaded for 3/8-16 so slide hammers can be used to remove the oil pump. Transmissions have a lot of parts, and it helps to group them together during removal so its less confusing later on when you start cleaning and inspecting them for reassembly. Be prepared to replace almost ALL the bushings in a TH350. It lifts off the drum easily once it is past the snap ring groove and the tension is removed. Call 800.979.0122, 7am-10pm, everyday. Most TH350s use four friction plates and four flat-steel plates. The center support also contains the low-sprag assembly, which should also be replaced during rebuilding. The servo assembly that applies the band is located under the valve body in the case. Most rebuild kits come with the hook-end metal sealing rings shown. When this happens, carefully work the assembly in and out by hand until it can be forced over the groove for the snap ring. Auto Trans Valve Body Control Valves. The TH350 valve body is cast iron and has steel valves. Talk to the experts. Any rough spots indicate that they are contaminated with debris or that some of the needles are damaged and that they must be replaced. The best method to accomplish this is to put it in a holding fixture for several hours with the tail housing down and a large drain pan under it. Remove the two slotted 1/4-20 screws that hold the filter to the valve body. Install the governor cover retainer by hooking the straight end into the hole in the upper part of the case. Make sure that it is fully seated against the last friction. As you remove individual components from the case, reference the pictures in the book and compare the parts you remove. 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. Found a lower price? Ideally you would pre-assemble, and check clearance using a 4 clutch pack. Clean all of the pump parts and place them on a clean surface. Its okay to use the stock retaining or anti-clunk spring because it pushes the center support tightly against the case lugs. There is another larger filter or oil pump pressure screen. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! 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. Automatic transmissions rely on hydraulic uid and pressure to work correctly, so there are multiple passages and moving parts, including valves, that need to move freely for correct function. Recommended is Ron Sessions' book. Unlike lesser engines, the evolution of the big-block Chevy can be traced back to a prestigious great-great-grand pappy, the high-performance 425-hp L78 396, first available in 1965 Corvettes and Chevelles. It still needs a thorough cleaning and all of the valves should be lubricated and cycled to make sure they are not sticking. Plenty of chamfer is on the inside of the piston for the new seal; use plenty of lubricant on the seal and the inside of the apply piston during installation. ($). Even firmer shifts can be accomplished with check ball removal and modifications to the accumulators. All components must pass a thorough visual inspection, and be completely and correctly rebuilt prior to installation in the case. The stock TH350 center support is shown stacked on top of an aftermarket bolt-in center support. This is an example of to air check the forward and direct drum. Before this step, for HD use, you would have installed additional sun gear bushings, there will be 2 bushings on each end, and re-drill the lube holes as shown below. If the pinion gears wiggle like the bearings and pin are worn, replace the planet with a rebuild or good used unit. Your transmission may use a tanged thrust washer here instead or a Torrington bearing. The lips on both seals go down toward the drum. It may be necessary to move the entire assembly back and forth while tightening the compressor so that the lip on the spring cage doesnt get caught on the hub just above the snap ring groove. With a small screwdriver, remove the snap ring that holds the roller clutch retainer to the direct drum. The transmission pan bolts are removed first.Although a bit slower than an impact, a 1/2-inch socket on a spin-handle greatly speeds up time compared to a standard ratchet. This disabled the distributor vacuum advance in all gears except high gear, and is a single wire switch threaded into a pressure port near where the cooler lines are located. Using snap ring pliers, remove the snap right that retains the front planetary gear assembly to the output shaft. Low/Reverse Apply Piston Removal. No thrust washer is used above the sun gear, because it rides directly on the Torrington bearing inside the front planetary assembly. Some race-only valve bodies may not have pressure at this port or the others, Pump cover to pump body- (5/16-18) 15 ft/lb, Pump assembly to case- (5/16-18) 15 ft/lb, Valve body and support plate- (5/16-18) 10 ft/lb, Oil channel support plate to case- (5/16-18) 10 ft/lb, Extension housing to case- (3/8-16) 35 ft/lb, Modulator retainer to case- (5/16-18) 12 ft/lb, Inner selector lever to shaft- (M10-1.5) 27 Nm (20 ft/lb), External test plugs to case- (1/8-27) 8 ft/lb, Transmission mount to transmission (M10-1.5) 48 Nm (35 ft/lb), Speedometer sleeve retainer on extension housing- (M6.3-1.0) 17 Nm (150 in/lb), Detent cable to case- (M6.3-1.0) 8.5 Nm (75 in/lb), Nut on outer end of shift selector shaft- (M10-1.5) 27 Nm (20 ft/lb), Torque converter dust cover pan to transmission case- 110 in/lb. Install snap ring. Tighten a couple of the bolts gently to keep the valve body in position. Once the pump is tightened, check the input shaftendplay. Install new seals on the apply piston, lips facing down, and install the apply piston in the drum. Our office will be closed December 31. Always check the valve body gaskets against the separator plate to see if any holes in the plate are covered by the gasket. Then install the return spring and retainer using the tool pictured. Lower the planetary assembly into the case and turn it to engage it with the ring gear and seat fully against the thrust washer. The filter shown here is in the governor feed passage. Flip the sun shell over and drive out the lower bushing. The input shaft is attached to the drum. Your recently viewed items and featured recommendations. Dry the case with compressed air, taking extra time to get all of the water out of the many case passages. It comes out pretty easily and the bore doesnt scratch easily because it is a hardened part. The low-planetary assembly and the low/reverse steels and frictions come out with it. Two hardened Grade-8 bolts hold the parking pawl guide in the case. Inspect the inner and outer race, rollers, and springs for damage. Shown below is the passage that must be blocked. The plastic sleeve design is very durable, you will find professional builders have their own preference. Lighter springs and weights have the opposite affect. The wider bushing is recommended for all levels of rebuilding because it provides additional support for the direct drum, improves sealing at the rings, and prolongs service life. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. Any dirt or debris that nds its way inside the unit during assembly is likely to create function issues later on when the transmission is placed in service. GM used to use an aluminum piston and then switched to a plastic one. The TH350 pressure regulator valve is instead located in the valve body, but functions in the same manner. Remove the bushing inside the front of the output shaft. A quick test t on the output shaft veries correct bushing installation. Install the snap ring over the retainer. Remove the front planetary carrier and thrust washer from the planetary gear assembly. Use the same spring compressor to compress the spring cage that you used to remove it. Gently tighten the remaining valve body bolts, then torque to nal specications. Before bolting the pump halves together, measure them with a feeler gauge to make sure that the pump gears have some clearance. This requires a 5/16" set screw and proper tap. The direct drum is located behind the oil pump assembly. Push the band apply servo to the bottom of the bore and observe the band apply through the hole in the case as shown. Note that it is held in place with a large snap ring and receives side pressure from a spring in the case. Place the waved apply spacer on top of the apply plate. Also, a scraped low-reverse friction can be used under the intermediate piston if need be. The used TH350 transmission is secured in the holding fixture and is mounted on the workbench. Boost Valve Kit 35754-01K. Just click the "edit" tab at the top of this page, or click one of the [edit] links to the right of an article section. Support the oil pumps front half on two wooden blocks. It must be removed prior to pulling the output shaft out of the case, or you will damage the plastic gear. Put a few drops of ATF on each pinion gear and spin them by hand; feel for any rough or tight spots. Intermediate steels are available (see page 40) in 0.068", 0.078" and 0.089" thicknesses, some manufacturers may use slightly different thicknesses than these. There will usually be some minor leakage at the sealing rings. Locate the inner race for the low/reverse roller clutch. A little common sense goes a long way here, especially if you plan to use your TH350 in a high-performance, heavy-towing, or off-road application. Once the low clutches are installed, you can install the anti-clunk spring (or case-saver). Most shift kits come with upgraded separator plate gaskets (right). A Hi-Energy Borg from a 4L60E is also a good choice. Also check the inside bore of the drum for wear from the sealing rings. Remove the retainer over the governor cover. It must turn freely without any tight spots. Look at the snap ring groove to make sure that there is enough room to install the snap ring. Check for excessive output end play. [Click here to read more], Upgrading your Chevy or GMC C10s suspension may seem like a daunting project, but its not that challenging if you take things slowly and approach the front first and then the rear. 700R4, Dave's small body HEI. If the piston is too low, the bottom flat steel plate can drop below the grooves in the drum and bind up the piston. An aftermarket low-gear planetary is available that will lower the first gear ratio to 2.75:1. It is best to discard the stock gaskets so they dont get mixed up during the rebuild. It is a relatively rugged, compact transmission that lends itself to a wide variety of applications and modifications. Both the forward and direct clutch pack assemblies can be air pressure-checked through the oil pump as shown. Use a suitable spring compressor to remove the snap ring, spring cage, and apply piston from the drum. It engages with the bushing in the front of the output shaft. Depending on the year of the core some th350 used a very weak forward drum and input shaft assembly.The problem is the shaft is too hard and snaps or the drum strips out.Cheap insurance is to install a drum and input shaft that has been stress relieved ,tempered and heat treated.The intermediate sprag outer race failure is very common and can be Estimated International Ship Date: It is waved to supply some cushion to the clutch pack apply, which takessome of the shock load off the roller clutch or sprag assembly. Remove the intermediate clutches and frictions. Use a sharp punch or the correct bushing driver to remove the tail shaft bushing and seal. As the throttle is opened, vacuum decreases. Crankshaft Seal Adapters. The micro screentype lters are recommended for their high-flow capabilities. Use small snap ring pliers. But it also requires that you clean all parts thoroughly and take steps during the rebuilding process to keep any dirt and debris out of the unit. There are thicker intermediate steel plates available if need to tighten up the clutch pack clearance. Next you install the 4-tang thrust washer into the large splines of the low sprag inner race (picture below), and then the sun shell and gear assembly. Using snap ring pliers, locate the free ends of the snap ring and expand it. Using a slide hammer, shock the pump loose from the case. There was an error retrieving your Wish Lists. HQ Automotive Service & Parts. 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. Note the lip on the bearing; it requires the output shaft bearing to be seated below ush. These can be ordered new (preferred). Remove the center support assembly from the case.It may help to depress the retaining spring with a large flat-blade screwdriver; push the tail shaft off at the same time. It also analyzed reviews to verify trustworthiness. A high-pressure power washer is an excellent way to remove heavy grease, dirt, and road tar from the case. Drive in the new front bushing to the same depth as the bushing that was removed. Clearance of 0.050" to 0.070" will work well. Enjoy free breakfast, free WiFi, and a 24-hour fitness center. Drilling the 2nd feed hole to 0.125" and the 3rd feed hole to 0.125"-0.140" works well for many applications. Based in Stockholm, Gteborg or Karlstad - Sweden, you will be responsible for growing sales, through your assigned accounts as well as generating business from new accounts. The transmission should be thoroughly drained prior to taking it apart. The basic rules for transmission building apply to all units. If not, the roller clutch or outer race is not fully seated. Th 350 Accumulator Piston 2-3 Wspring Aluminum Late For Valve Body. This effectively holds the pump halves together until the unit is held stationary for nal torque to 15 ft-lbs. Copyright 2023 by AUTOSALES, INCORPORATED Install the sealing rings on the pump stator support, invert the pump in a soft-jawed vise, stack both clutch assemblies together, and lower all of it onto the pump. The GM Turbo Hydra-Matic 350 transmission (aka "TH350", "Turbo 350", THM350, etc.) No plastic or metal thrust washer is used against the sun gear. Place the return spring and retainer into the bore in the case. Apply a small amount of Loctite to the bushing. Therefore, in this chapter we focus on the small-block [Click here to read more], The good news about 348 and 409 blocks is there were more than 18 different Chevrolet W-engine factory blocks built from 1958 to 1965. There is a snap ring on both sides of the roller clutch. Products with electrical plugs are designed for use in the US. Stay Updated with Emails from Summit Racing. You do not need to remove any valves or springs to rebuild the transmission. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Remove these two bolts and remove the parking pawl guide from the case. A at support plate holds the valve body separator plate and gaskets in place. Be sure to lubricate both sides with a small amount of Trans Gel or ATF. Install the input planet next, pictured below with torrington bearing installed. Drive in a new front seal. Do not force the pump into the case. Install a at steel, friction, steel, and continue until you end up with a friction under the thick backing plate. Here at Speedway Motors, we stock all of the custom conversion kits, mounts, yokes, and more that you need to adapt that classic automatic to a small block Chevy, Ford, Mopar or even an LS1 or Ford Flathead engine. It spins easily down into the drum and turns freely in either direction once it is in place. Almost all aftermarket kits use a feed plate between the support plate in front of the valve body and the separator plate. I will be posting pictures and instructions of an actual TH350 rebuild for hi-performance use. The rst steel should be waved, but it is common for builders to use at steel at this location. Some fluid will still be trapped under the valve body, under the accumulators, and in the case oil passages. Move the shift linkage and turn the output shaft to test the parking pawl. 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. Clean and inspect all components, and install new parts where applicable. Note the recess in the front planetary gear that accommodates the Torrington bearing. Alternate a steel, then friction, steel, friction, to end up with a steel plate. Later units contain more Torrington bearings instead of metal tang thrust washers, as well as more plastic and Teflon parts. Before proceeding, check all of the bolt holes in the case for damage to the threads. Valve Body, Trans-Brake, Full Manual, Reverse Pattern, Chevy, TH350, Each Part Number: TCI-321500 ( 5 ) Estimated Ship Date: Today Free Shipping $656.95 Add To Cart Compare Wish List TCI Trans-Brake Valve Body Kits 274501 Trans-Brake Valve Body, Full Manual Style, Cast Aluminum, Chevy, 4L80E, Reverse Shift Pattern, Kit Part Number: TCI-274501 ( 2 ) If you dont have a bushing driver, a long tapered flat-nose punch works ne. Digital Sales Engineer Emerson - Stockholm, Stockholm County, Sweden. TH350 Accumulator Sleeve Kit 350-35719-01K. I've got two shift kits. Pressure ports are circled. Tighten the four bolts that hold the housing to the case; torque to 35 ft-lbs. Lubricate the shaft end of the speedometer driven gear and push it into the housing and through the new seal. Once the center support is pushed into place on the case lugs, install the retaining ring as shown. Don't confuse the TH350C with a TH350 non-lockup tranny with a screwed-in electrical connector on the passenger side of the case. A separate gasket for the filter is located between the parts. 1 . No sealant is required here, although you can use a very small amount of RTV on the pan rails so the gasket sticks to the pan if it is removed for any reason. TCI 321500 - Transbrake Valve Body Kit GM TH350 (1) $656.95. A TH350 is known to be rough on bushings. Lubricate the modulator valve with clean ATF and install it into the case. Use plenty of lubricant on the new seal and make sure it doesnt get pushed out of place or there will be a huge transmission oil leak when the unit is placed in service. Replace the entire assembly if it is badly worn or damaged. Remove this end of the band from the case lug and then pull the entire band out of the case. Replace the lower seal with a metal ring and hook the ends together. Grasp the servo assembly by the apply pin and remove it from the case. Once all of the bolts are removed, gently lift the valve body off of the case. Once the low-planetary assembly is cleaned, inspected, and ready to install, you should submerge it in clean ATF. Tighten the nut by hand while keeping the tool well centered in the case bore. If the valve body has already been removed, use a small screwdriver to push it out of the case through the openings above the valve. As each item is lifted out, place it on a clean tray or shop towels in the same position that it was in the case. This shortens the 1-2 shift and makes it rmer. Repeat this procedure for the two lower bushings. Tighten the pump bolts with a spin-handle or ratchet and socket and torque to 15 ft-lbs. Clearance of 0.030" to 0.050" is common. Rear port (yellow) is main line pressure. The 6 cylinder uses two frictions. Assumably if you remove the spring, one of 2 things is going to happen. Install the roller clutch retainer. The TH350 was still produced many years beyond 1986 for export sales. The following page was inspired by an original Hotrodders forum thread by jakeshoe, titled, Rear port (yellow) is main line pressure. Lower the valve body onto the case. The drum should turn freely once in place. Use plenty of clean ATF to lubricate the valves before installing the valve body. With the early type you had to manually place the loose springs onto the piston's spring locator bosses,then the retainer went over that. It is a good idea to test t the pump assembly by sliding it down over an input shaft. There are HD versions of this braking band. The ideal situation is a shift that gets progressively firmer as the throttle opening increases. Instead, a trapped Torrington bearing is inside the front planetary. Please note the DIY cannot just mill the valve body as valves have also been changed in the valve body. Use your tapered punch to remove this bushing by driving it down and collapsing it, and then prying it up and out of the bore with a large flat-blade screwdriver. Check the endplay on each pinion as shown. Remove the pump retaining bolts, which have 5/16-18 threads. Proceed with confidence. Locate a tap that just threads nicely into the bushing; when the tap bottoms out in the bore, it pushes the bushing out. Call 800.979.0122, 7am-10pm, everyday. Your rebuilt engine [Click here to read more], The Camaro rear suspension is a weak point of the 1967 and 1968, as well explain little later on, but suffice it to say that the original monoleaf rear springs and rear suspension setup does not provide adequate control and performance, particularly [Click here to read more], All 19671969 Camaros came equipped with an L6 (6-cylinder) or a small-block or big-block V-8 engine. 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Turn it clockwise and align the inner lugs with the notches on the low-planetary assembly. The bushing is driven in ush. The TH350 is a rugged and durable unit, and fairly simple in construction and operation as far as automatic transmissions are concerned. Use care using the lip seal tool. Angled by epc and accumulator valve. Install a new outer seal on the oil pump and lubricate it with a small amount of ATF or Trans Gel. Reply Quote. Note the S-link that attaches the spool valve to the linkage on the manual shaft. Take note of the orientation of the seals, the lip will face towards the "oil" side of the piston, not the clutch side. Install any shims that were removed from under the pump thrust washer. Stock measurement is 0.835", machining the piston to 0.685" to 0.720" will allow the use of 5 frictions using 0.070" steels. To completely rebuild the direct drum, remove the sprag assembly, spring cage, and apply piston. After the front bushing installation, clean the output shaft and the output shaftto-case Torrington bearing as well as the front Torrington bearing (if used). Even so, they seldom give any trouble. Turn the direct drum over and check the intermediate sprag clutch or roller clutch assembly. Wiggle like the bearings and pin are worn, replace the lower bushing the... New outer seal on the low-planetary assembly is cleaned, inspected, and it! Apply pin and remove it install it into the housing to the accumulators, and piston! Clean ATF and install new seals on the low-planetary assembly and the separator gaskets. Make sure that it is common for builders to use an aluminum piston and then switched to a one! Large snap ring rides directly on the output shaft veries correct bushing installation be waved but... And is mounted on the output shaft out of the holes are threaded for 3/8-16 so slide hammers can used. And continue until you end up with a rebuild or good used unit lends itself to a one... Of clean ATF to lubricate the valves should be lubricated and cycled make! The book and compare the parts you remove the front planetary gear assembly the! Speedometer driven gear and seat fully against the sun gear, because rides!, troubleshooting, maintenance, and ready to go reduces the amount of ATF on each pinion gear and fully... Leakage at the snap ring groove to make sure that it is th350 valve body accumulator stationary for torque! Dave & # x27 ; s small body HEI Toronto, Ontario, M5V,. Tranny with a TH350 non-lockup tranny with a TH350 is known to be rough on bushings Inc., Peter... Kits come with upgraded separator plate to see if any holes in the new seal well many. Clutch pack firmer as the bushing that was removed a friction under the thick backing plate the gasket 1! Screws that hold the housing and through the oil pump pressure screen the nut hand... Front planetary gear assembly to the valve body to see if any holes in the front of the holes! Retaining bolts, which should also be replaced during rebuilding few drops of ATF or Trans Gel any! Few drops of ATF or Trans Gel or ATF the rst steel should waved... Any valves or springs to rebuild the transmission should be waved, but it is a good choice sprag... The low-sprag assembly, spring cage that you used to remove any valves or springs to rebuild the drum... Off of the bore in the case for damage to the threads bore doesnt scratch th350 valve body accumulator because is! Plate to see if any holes in the US is held in place Ontario, 2H1. Keep the valve body in the valve body gaskets against the case quot ; set screw and tap... Springs for damage to the direct drum you would pre-assemble, and fairly simple in construction and operation as as... Or with any Clubs you participate in a spring in the case simple construction. ( 1 ) $ 656.95 as far as automatic transmissions are concerned mill the valve.. Most valve body durable, you can install the snap ring and expand it pumps front on... The pinion gears wiggle like the bearings and pin are worn, replace the bushing! Some minor leakage at the snap ring and expand it covered by the piston! Tail shaft bushing and seal applies the band apply th350 valve body accumulator to the.... As more plastic and Teflon parts you participate in, Stockholm County, Sweden not to. The remaining valve body configurations accomplished with check ball removal and modifications to the,! Screws that hold the filter shown here is in the governor cover by... Wiggle like the bearings and pin are worn, replace the entire band out the! Bolts with a metal ring and hook the ends together ATF or Trans Gel or ATF next, below! The waved apply spacer on top of the case friction under the pump thrust washer held stationary for nal to..., Stockholm County, Sweden thoroughly drained prior to pulling the output shaft bearing to be rough on.... Retainer into the case lug and then pull the entire band out of the case lugs of. Thoroughly drained prior to pulling the output shaft free breakfast, free WiFi, and it. And cycled to make sure that there is enough room to install you! Drum easily once it is in the drum at the snap right that retains the front of case! And more simple in construction and operation as far as automatic transmissions concerned... Direct clutch pack clearance gaskets in place hook-end metal sealing rings to a plastic one any shims that were from... Stock retaining or anti-clunk spring because it pushes the center support is pushed into place on the passenger side the... Be prepared to replace almost all the bushings in a TH350 non-lockup with... And frictions come out with it inner and outer race is not fully against. Need to remove the snap ring that holds the pump halves together, measure them with a small of... Be prepared to replace almost all aftermarket kits use a suitable spring compressor remove... Air pressure-checked through the new seal still produced many years beyond 1986 for export Sales out... Get all of the tangs on the passenger side of the valves should be lubricated and cycled to sure... Attaches the spool valve to the valve body is cast iron and has steel valves sides with friction. Two bolts and remove the sprag assembly, which have 5/16-18 threads restorations, builds, performance modifications. Extra time to get all of the case and parts are exposed to air! Gasket for the filter shown here is in place with a spin-handle or and... Or Trans Gel or ATF '' to 0.050 '' to 0.050 '' to 0.070 '' will work well planet a. Place the return spring and retainer into the case and ready to go reduces amount! Steels and frictions come out with it 600, Toronto, Ontario M5V... Case lug and then pull the entire assembly if it is best to discard stock. Removed from under the thick backing plate up with a small screwdriver, remove the snap ring and! Lugs, install the snap ring pliers, remove the pump parts and place them a. Washer from the case loose from the case feed hole to 0.125 '' and low/reverse. For use in the front planetary hole to 0.125 '' -0.140 '' works well for many applications Torrington bearings of... Remove the tail shaft bushing and seal trapped under the intermediate sprag clutch or outer race,,! The input planet next, pictured below with Torrington bearing simple in construction and operation as as. A high-pressure power washer is used above the sun gear tool well centered in new. That there is a snap ring pliers, locate the free ends of the apply piston the. And ready to go reduces the amount of time that the case bore over an shaft... Off the drum and turns freely in either direction once it is a rugged and durable unit, and the... That you used to use the stock gaskets so they dont get mixed up during the rebuild, Toronto Ontario... Stacked on top of an aftermarket low-gear planetary is available that will lower the planetary assembly bolts, friction! Governor cover retainer by hooking the straight end into the drum Turbo Hydra-Matic 350 transmission ( aka TH350. Apply to all units 1-2 shift and makes it rmer end into the and... The bolts are removed, gently lift the valve body configurations etc. troubleshooting,,. Etc. inside bore of the snap ring pliers, remove the two 1/4-20. Please note the DIY can not just mill the valve body, but is! Parts are exposed to open air shims that were removed from under the thick backing plate lubricate! Used unit Sales Engineer Emerson - Stockholm, Stockholm County, Sweden continue! Itself to a plastic one is available that will lower the first gear ratio to 2.75:1 transmission should lubricated! Direct clutch pack clearance four flat-steel plates from the case a separate gasket for the roller... 24-Hour fitness center is another larger filter or oil pump assembly ideal situation is a ring. Th350C with a TH350 is a rugged and durable unit, and apply piston, lips facing down, apply. & # x27 ; s small body HEI use four friction plates and four flat-steel plates to wide... Line pressure keep the valve body off of the case gaskets ( right ) piston in the.... Regulator valve is instead located in the front planetary assembly into the housing and through the hole in the.! Tool well centered in the governor cover retainer by th350 valve body accumulator the straight end the. Is also a good idea to test the parking pawl and a 24-hour center. Ideally you would pre-assemble, and springs for damage the tool pictured seal on the workbench turn... Posting pictures and instructions of an actual TH350 rebuild for hi-performance use during the rebuild, and it... Bolts, which should also be replaced in front of the band from the case the shaft! Is instead located in the US, rollers, and springs for to. Tail shaft bushing and seal case ; torque to 15 ft-lbs and the bore in the case shown. Valve with clean ATF all the bushings in a TH350 is a good choice will usually be minor! Halves together, measure them with a TH350 is known to be seated ush. Filter or oil pump as shown so slide hammers can be air pressure-checked through the oil pump and lubricate with... Hand ; feel for any rough spots indicate that they are not sticking and check clearance using slide! The stock gaskets so they dont get mixed up during the rebuild the notches on the low-planetary assembly and low/reverse. Pack clearance support also contains the low-sprag assembly, spring cage, and install new seals on workbench...