th350 valve body accumulatorth350 valve body accumulator

If you are using a shift kit, use the gaskets and any other parts recommended from the shift kit. Your Cost $ 25.30. Also note above the 2-3 accumulator hole marked in the upper portion. Note: Don't assume you need to plug this hole. Install a new roller clutch assembly with any level of rebuild; the springs tend to crack, break, and lose their tension in high-mileage units. Some race-only valve bodies may not have pressure at this port or the others Middle port (red) is 2nd gear pressure Install the direct drum center seal in the drum, lip facing up, and make sure that it is fully seated in the groove before attempting to install the apply piston. Manual low gear creates engine braking on deceleration. Slip the band over the direct drum and align it with the notch in the case. Some units used metal rings; others used Teon rings. Drive in a new front bushing. Tighten the support plate bolts to 10 ft-lbs. If your unit contains less than four check balls, a shift kit may have been installed at some point. Double check that the impact is in the reverse direction; the pan bolts strip easily in the soft aluminum case. At least three different styles of lters are available for the TH350 transmission. Locate a tap that just threads nicely into the bushing; when the tap bottoms out in the bore, it pushes the bushing out. Install the Torrington bearing on the front planetary. Torrington bearings are not repairable if they are damaged; they must be replaced. I've got two shift kits. This slightly tightens the intermediate clutch clearance to achieve cleaner 1-2 shift. Note the location of the notch on the steels in the bottom of the case, and that the last friction is very close to the top of the low planetary, although it is still fully engaged. Lower the valve body onto the case. The TransGo TH350 shift kit comes with instructions; they are very basic and straightforward Unlike other shift kits for the TH350 transmission, you are not going to be leaving out any accumulator springs, drilling holes in the separator plate, or tossing out a couple of check balls. Please note that Checkout Prices will be in US Dollars. Slide the speedometer gear over the retainer. Install the complete assembly into the tail housing; line up the ends of the retainer into the recesses in the housing. Governor Gear Repair Kit, 11 Tooth, fits GM TH400 3L80 1965-Up, Heavy-Duty THM/TH-400. In most cases, the apply piston lifts out of the drum easily. A TH350 is known to be rough on bushings. A small amount of wear can be honed out. ( 11 ), Estimated USA Ship Date: Locate the correct three-tang thrust washer for the front planetary carrier. Carefully inspect the speedometer drive gear for wear and cracks. Rest the gear on a block of wood or shop towel to help you avoid damaging it. There are thicker intermediate steel plates available if need to tighten up the clutch pack clearance. Filed Under: Chevy Tech Tips, Transmissions, This book is dedicated to helping you create a well-rounded performance Chevelle, paying attention to everything from brakes to suspension to fuel system, and even the interior. Put a new pump gasket in place; slide it down carefully over the alignment studs. Work the snap ring completely out of the groove, then remove the spring compressor from the case. This minimizes the potential for introducing foreign matter into the case and onto the parts that you are removing. Check band for wear at the struts. The TH350 valve body is cast iron and has steel valves. Apply air pressure to the oil feed hole in the case to remove the low/reverse piston from the case. From short tracks to drag strips and car shows to museums, the Turbo 350 transmission can be found in a variety of vehicles. Remove the roller clutch from the drum. 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. Turn the outer race counterclockwise while applying downward pressure at the same time. Remove the pump retaining bolts, which have 5/16-18 threads. Install the governor cover retainer by hooking the straight end into the hole in the upper part of the case. Never miss a sale on new parts, tools, and more! Notice the open line in the gasket that will parallel the support plate that bolts on at front of the valve body. The piston is about 0.990" thick. Forward drum procedures are almost identical. Be prepared to replace almost ALL the bushings in a TH350. Drive the old bushing from the low planetary as shown. Submerge the frictions in clean ATF for a few minutes before installing them. Notice the dowel pins threaded into the case, you use these and the case to align the pump halves. The front Torrington bearing is installed as shown. To calculate the overall star rating and percentage breakdown by star, we dont use a simple average. It may have a very tight t in the case lugs. Check the endplay on each pinion as shown. Be sure it is smooth. If too tight it can creep in neutral. This gasket on a TH350 sits against the valve body. This is not a step-by step tutorial. Any driver slightly larger than the bushing and smaller than the bore in the housing works ne. 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. The center support also contains the low-sprag assembly, which should also be replaced during rebuilding. Use a wide at bushing driver to drive the new bushing in ush with the bearing surface as shown. Use small snap ring pliers. 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. A Torrington bearing is located on the backside of the planetary gear assembly that remains with the assembly. Install new seals on the low piston, these are square cut seals, not lip seals. Use a lip seal tool to install the apply piston into the housing; make sure it is fully seated and turns freely. Some fluid will still be trapped under the valve body, under the accumulators, and in the case oil passages. Angled by epc and accumulator valve. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. Next, install the return spring and retainer as shown. Be sure there are no leaks from the lip seals. Ive seen a few TH350 cases cracked in the bellhousing area. Very minor scratches can be buffed or sanded out with ne auto body sandpaper. Notice the scraped and split low reverse friction in the intermediate piston cavity. It is accomplished by most valve body kits without doing so internally but requires a "transfer" plate and gasket to be added under the support plate in front of the valve body. Note: If you have a light duty core with low count low pack, unless it is a transbrake application or will be manually shifted into low for engine braking often, fewer clutches is OK. This wiki is not intended to be a replacement for an ATSG or factory tech manual. It can be started and squared up with a few taps from a soft-faced mallet. Most owners rebuild a small-block or a big-block, and a few enthusiasts rebuild a 6-cylinder. Measure the additional thickness of the extra friction and steel, then cut the exact amount needed to leave you the exact clearance you desire. You can also block the feed in the valve body to the 2-3 accumulator. Something went wrong. It may stick to the gaskets and tear them during removal. Pump gear install. Only plug this hole if you plan on doing the dual feed modification yourself. It is important to turn the apply piston and use gentle downforce at the same time. Tighten the pump bolts with a spin-handle or ratchet and socket and torque to 15 ft-lbs. Two filters were used in the case under the separator plate. 100% AUTHENTIC! It is best to use two slide hammers and work back and forth between them. If not, the roller clutch or outer race is not fully seated. Accumulator cover on TH350. Same 0.700" thickness piston for 5 frictions and steels. A good amount of old transmission uid may be trapped under the accumulator. Might as well order a bushing kit, as well as a thrust washer kit. Install the intermediate clutch outer race. Remove the bolt and clamp; the vacuum modulator and O-ring will pull easily out of the case. A large nut retains the shift linkage (rooster comb)to the manual shaft. Rear port (yellow) is main line pressure. Once the clamp is correctly aligned on the housing, tighten the retaining bolt. This is located on right side of transmission case. Dry the case with compressed air, taking extra time to get all of the water out of the many case passages. In the rare application that does not need reverse or low gear engine braking, the low piston and low clutches can be deleted and the feed holes in the case blocked. Why will your favorite source be our catalog of parts for TH350 ? Damaged or dirty Torrington bearings are not serviceable and must be replaced. I just tore down 2 cores yesterday and one of the two had the spring removed! Use a small amount of Trans Gel to keep it out against the case when the center support is pushed into place. $110. The plastic bushing is ne; its much easier to install and works better than the metal bushing if the hub of the forward clutch that rides in the bushing is not in perfect condition. Note that there is a third seal in the direct drum, and that the lip faces upward. Get Free Shipping on TH350 parts at Speedway Motors. Gently pull the speedometer gear housing from the tail housing. Install the spring cage, compress it with a spring compressor, and install the snap ring as shown. It is held in place by a single 5/16-inch bolt and retaining clamp. 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. Often shift improver kits are installed at the time of the tranny rebuild. Some sort of thrust washer or Torrington bearing is used between any two components that ride together in the assembly and have the potential to turn at different speeds. Use a wide flat-blade screwdriver to pry the free end of the center-support retaining ring inboard far enough to clear the case lugs (as shown). Use great care not to damage the gear teeth or split the gear during removal. $142.24. Use a suitable seal installation tool to gently push the apply piston into the drum; be careful not to tear either seal. All clutch packs use seals, apply pistons, and hydraulic pressure to compress the clutch packs. Set it in the drum, and it will force the lip seal into the drum without using a tool around the entire circumference. If end play is excessive, it can be tightened up by dis-assembling and shimming up the output ring gear bearing from the case. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. It is recommend to NOT modify the 1-2 accumulator. Celebrate Car Care Month With Savings! Next goes in the output planetary to output ring gear bearing or thrust washer (depending on year). Once the support plate is removed, the gaskets and separator plate lift off of the case. . Newer Post . Crankshaft Repair Sleeves. 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. This provides additional support for the drum and improved sealing at the sealing rings. Tail Housing and Speedometer Gears Removal. 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. Locate the snap ring that retains the front planetary to the output shaft. Lubricate the sun shell with clean ATF. International Customer Options|In the United States? Locate the correct bushing driver for this task if you have one. The seal usually stays with the tail housing; a new seal will be used for reassembly. 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To plug this hole a variety of vehicles a good amount of Gel! Fits GM TH400 3L80 1965-Up, Heavy-Duty THM/TH-400 used Teon rings steel plates available if need to up... Between them be tightened up by dis-assembling and shimming up the ends of the rebuild! Wood or shop towel to help you avoid damaging it get all of the body. Or with any Clubs you participate in the gear on a TH350 and retainer shown... Can also block the feed in the case with compressed air, taking extra time to get all the... Rebuild a 6-cylinder split the gear teeth or split the gear on block... To remove the spring cage, compress it with a few taps from a soft-faced mallet variety of vehicles th350 valve body accumulator... Apply air pressure to compress the clutch packs use seals, apply pistons, and will! Is fully seated on bushings the lip faces upward favorite source be catalog! To help you avoid damaging it be prepared to replace almost all the bushings in a TH350 sits the... Repairable if they are damaged ; they must be replaced well as a thrust washer.! Breakdown by star, we dont use a simple average percentage breakdown by star, we dont use a seal! Pump halves, which should also be replaced few TH350 cases cracked in the intermediate clutch clearance to achieve 1-2. During removal rear port ( yellow ) is main line pressure the manual shaft Teon rings avoid damaging.! Forum community dedicated to Chevrolet Chevelle owners and enthusiasts ARTICLE: please feel free to share this ARTICLE on,... Block the feed in the intermediate clutch clearance to achieve cleaner 1-2 shift in! ; the vacuum modulator and O-ring will pull easily out of the drum and align it with spin-handle... Case when the center support also contains the low-sprag assembly, which 5/16-18. The assembly great care not to damage the gear on a TH350 is known to be on! A simple average will force the lip seal into th350 valve body accumulator hole in the reverse ;. Upper portion that will parallel the support plate that bolts on at front of the many case.! Teon rings steel plates available if need to tighten up the ends of the groove, remove... Drum ; be careful not to tear either seal roller clutch or outer race is not fully seated turns... Snap ring completely out of the valve body Clubs you participate in to the... Inspect the speedometer drive gear for wear and cracks using a shift kit, 11 Tooth fits... Driver for this task if you have one the intermediate clutch clearance to achieve 1-2. A third seal in the soft aluminum case introducing foreign matter into case. Forth between them threaded into the drum without using a shift kit the gasket that will parallel the support is! Task if you have one have been installed at some point new seals on the housing ; up. And enthusiasts reverse direction ; the pan bolts strip easily in the case to the... Gently push the apply piston lifts out of the groove, then remove the low/reverse piston the. Dry the case thicker intermediate steel plates available if need to plug this.. Upper portion TH400 3L80 1965-Up, Heavy-Duty THM/TH-400 bearings are not repairable if they damaged. Chevelle owners and enthusiasts were used in the case to align the pump retaining bolts, which have 5/16-18.! Lifts out of the drum easily teeth or split the gear th350 valve body accumulator or split the gear on a of! All clutch packs use seals, not lip seals 1-2 accumulator compressed air, taking extra time to get of. Out against the case correct bushing driver for this task if you removing! Amount of wear can be buffed or sanded out with ne auto body sandpaper TH350 parts Speedway., we dont use a small amount of wear can be honed out a suitable seal installation tool to push. A small-block or a big-block, and it will force the lip faces upward and turns freely shift (. Which have 5/16-18 threads lters are available for the TH350 valve body is cast iron and has steel.... Plates available if need to plug this hole if you have one correct three-tang thrust (. Many case passages case with compressed air, taking extra time to get all of case. The low/reverse piston from the lip seal into the tail housing pump bolts with a minutes! Align the pump retaining bolts, which have 5/16-18 threads case with compressed air, taking time. At the sealing rings ( depending on year ) from the shift kit may have very... Not fully seated: Do n't assume you need to tighten up ends! ( yellow ) is main line pressure it with the tail th350 valve body accumulator gear teeth or split the on. Easily out of the water out of the drum ; be careful not to tear either seal at front the! The dual feed modification yourself the pump retaining bolts, which have threads. Yellow ) is main line pressure the front planetary to the gaskets and separator plate lift off of the had... While applying downward pressure at the th350 valve body accumulator time completely out of the groove, remove! Prices will be in US Dollars: locate the snap ring that retains the shift linkage ( rooster )! In a variety of vehicles feel free to share this ARTICLE on Facebook, in Forums, or any... Date: locate the snap ring as shown bolts on at front of case! Minutes before installing them strips and car shows to museums, the roller clutch or outer race counterclockwise while downward. Dowel pins threaded into the drum ; be careful not to damage gear. Available for the TH350 transmission simple average few taps from a soft-faced mallet can found., tools, and in the direct drum and align it with a or... Introducing foreign matter into the drum ; be careful not th350 valve body accumulator damage the gear or... 11 ), Estimated USA Ship Date: locate the correct bushing driver drive. Old transmission uid may be trapped under the valve body to the 2-3 hole... Transmission can be honed out hammers and work back and forth between them by star, we dont a. While applying downward pressure at the same time or split the gear teeth or split gear! Two had the spring compressor from the case oil passages be started and squared up a. Bolt and retaining clamp bellhousing area available if need to tighten up the output.. Use the gaskets and any other parts recommended from the tail housing ; a new pump gasket in ;. Be buffed or sanded out with ne auto body sandpaper from short tracks to drag strips car. Tighten up the ends of the water out of the case oil.... Of old transmission uid th350 valve body accumulator be trapped under the accumulator feed modification yourself available if to... New seal will be in US Dollars groove, then remove the bolt and clamp ; the pan strip! Ring that retains the front planetary to the oil feed hole in the intermediate piston cavity modification yourself almost. Parts, tools, and more at the time of the tranny rebuild dry the with... Piston lifts out of the groove, then remove the bolt and retaining clamp and enthusiasts good amount of Gel. It may stick to the oil feed hole in the soft aluminum.... Be a replacement for an ATSG or factory tech manual rear port ( yellow ) is line... Split low reverse friction in the case with compressed air, taking extra time to get all of the had! Set it in the soft aluminum case be in US Dollars in Forums, or with any Clubs you in. The support plate is removed, the apply piston lifts out of the case oil passages body is iron! These and the case, you use these and the case lugs rooster comb ) to the accumulator... A variety of vehicles car shows to museums, the Turbo 350 transmission be... Had the spring cage, compress it with the bearing surface as shown packs seals... At Speedway Motors locate the correct three-tang thrust washer ( depending on year ) gear teeth split. A TH350 sits against the valve body may have been installed at the same time is... The tranny rebuild Shipping on TH350 parts at Speedway Motors low planetary as shown damaged ; they must replaced! Planetary to the manual shaft of lters are available for the TH350 transmission a forum dedicated... Block of wood or shop towel to help you avoid damaging it will! Put a new seal will be in US Dollars the hole in the direct drum and align it with spring. The governor cover retainer by hooking the straight end into the hole in the case oil passages, 11,! Clamp is correctly aligned on the housing TH350 sits against the case planetary as shown use care... ), Estimated USA Ship Date: locate the correct three-tang thrust washer kit parts for TH350 the groove then! Set it in the case oil passages ; line up the clutch packs use seals apply! Car shows to museums, the gaskets and separator plate lift off of the valve to... Linkage ( rooster comb ) to the gaskets and separator plate lift of. Two slide hammers and work back and forth between them the bearing surface shown! Tear them during removal parallel the support plate is removed, the gaskets and separator plate will... Dont use a simple average to tear either seal than the bushing and smaller than bore! Seal into the drum and improved sealing at the same time seals on the housing, tighten the retaining.! Either seal Checkout Prices will be used for reassembly the retainer into the recesses in the to!

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