th350 valve body accumulatorth350 valve body accumulator

The thrust washer often sticks to the bottom of the drum when it is removed from the case. Slide the speedometer gear over the output shaft and align the slot with the retainer. Under the servo piston is a washer, retainer, and springin that order. I try to keep a few machined on hand, and machine several at a time when I do so. This effectively holds the pump halves together until the unit is held stationary for nal torque to 15 ft-lbs. Right side of TH350 case. Use a small awl or screwdriver to pry upward on the input shaft as shown. Clamp the halves with a band clamp and tighten the bolts nger tight. Be careful not to drop or bend the valve. Your transmission may use a tanged thrust washer here instead or a Torrington bearing. You can also see the braking band installed. 100% AUTHENTIC! The low sprag (low roller clutch actually) causes first gear when only the forward clutches are applied. The case accumulator spring was probably left out, and the valve body accumulator might be upside-down and with the ears ground off of it. $39.99. A longer 4x4 output shaft was used for around 1.5 years. Check that the governor cover is fully seated. It may have a very tight t in the case lugs. The center support must be removed next. Set these parts aside; they will be reused. The theory on a long lived setup is that the springs that force the rollers against the race must be in good condition to help the rollers grab quicker and more evenly on apply. Note that the internal pump gear has two lugs that engage with the torque converter. Check the surface that rides in the case bushing; polish it as needed with very fine-grit auto body sandpaper. Having all the parts cleaned and ready to go reduces the amount of time that the case and parts are exposed to open air. Most rebuild kits come with new screens; if not, the old ones can be cleaned, blown dry with compressed air, and reused. It should turn freely in one direction and lock solid in the other direction. dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive, Sonnax Accumulator Piston Covers 35988-01K. Use a small amount of Trans Gel to keep it out against the case when the center support is pushed into place. Shields Shifters Shift Levers and Components Steel Plates Thrust Washer and Bearings Valve Body Chemicals and Lubricants Technical Manual. The direct drum is located behind the oil pump assembly. Install the forward clutch pack steels and frictions. 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. It is a relatively rugged, compact transmission that lends itself to a wide variety of applications and modifications. The low/reverse clutches do not apply in automatic range 1st gear. If your unit contains less than four check balls, a shift kit may have been installed at some point. It should turn freely without binding. 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. One method is to tap this hole with a 3/8" tap, and cut off the end of a 3/8" bolt. If you dont have a bushing driver, a long tapered flat-nose punch works ne. Using a magic marker, mark the leading edge of the piston and the case as an alignment guide for when the piston is installed. Use great care not to damage the gear teeth or split the gear during removal. You can copy and paste this link to share: http://www.cartechbooks.com/techtips/gm-th350-transmission-disassembly-guide/. [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. 25. Push an awl, scribe, or ice pick in behind the retaining ring and then pry it from the bore with a small screwdriver. Most shift kits come with upgraded separator plate gaskets (right). Be prepared and keep a large pan under the transmission the entire time. 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. Written by Cliff Ruggles and Posted with Permission of CarTechBooks. Some fluid will still be trapped under the valve body, under the accumulators, and in the case oil passages. Locate the 1-2 accumulator and its components. The modulator on the transmission will raise the main line pressure in the transmission. Place the gasket behind the plate and hold both up at light to check for covered holes. Lubricate all of the mating surfaces with clean transmission uid and install the output shaft into the case. Let us know. turbo350only.com. 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. Almost all aftermarket kits use a feed plate between the support plate in front of the valve body and the separator plate. Shaft endplay should be .015 to .030; use selective shims under the Torrington bearing or selective washers and shims to correct the pump endplay to within specications. You are also going to install an aftermarket shift kit during the rebuild. Locate the correct number of steel and friction plates for the direct drum that you are building. The following page was inspired by an original Hotrodders forum thread by jakeshoe, titled, Rear port (yellow) is main line pressure. Because the bolts are being tightened into a metal housing, its okay to turn down the pressure on a 3/8-inch impact and gently tighten the bolts. You must have JavaScript enabled in your browser to utilize the functionality of this website. During removal, take note of any shims under the bearing or the thrust washer. Install the manual shaft through the case and case seal. Insert Quotes Quotes Post Reply. Locate a tap that just threads nicely into the bushing; when the tap bottoms out in the bore, it pushes the bushing out. Building a strong transmission that will provide many years of reliable service starts with using a good core. Clean all of the components of the direct drum. It should turn freely in both directions. Make sure it is in the reverse direction because the case bolts strip easily if the impact is tightening instead of loosening the bolts. 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. They do not need to be removed to get the linkage out. Once the spacer is removed, it is easily accessed with an 11/16-inch open-end wrench. Using snap ring pliers, remove the snap ring. Make sure to support the low planetary on a wooden block so you dont damage it during the bushing installation. 700R4 4L60 4L60E 4L65E Transmission Valve Body Check Balls Set of 10 Compatible with GM .250" 4.6 out of 5 stars . Look at the snap ring groove to make sure that there is enough room to install the snap ring. Please note that Checkout Prices will be in US Dollars. It is best to clean all of the parts before you start the assembly process and give them a very close inspection for cracks, wear, broken or chipped teeth, etc. List, Converter & Transmission Application Sheet, Governor Support/Rear Pump and Components, Input Shafts and Forward Clutch Components, Shifters, Shift Shaft and Park Components, Overruning Clutch Assemblies and Components, TH350 Accumulator Sleeve Kit Replacement Rings 350-35719-SK, TH350 Intermediate Servo Sleeve Kit 350-35709-01K, TH350 Intermediate Servo Sleeve Kit Replacement Sealing Ring 350-35709-SK, TH350 Accumulator Sleeve Kit 350-35719-01K, TH350 Intermediate Clutch Accumulator Spring 350-35703, TH350 Accumulator Cover Billet 350-35988-01K. More than .060 may result in a slight delay on engagement. The micro screentype lters are recommended for their high-flow capabilities. Drive the new bushing ush with the inner bore of the housing as shown. The case bushing is driven in from the front. It must turn freely without any tight spots. If end play is excessive, it can be tightened up by dis-assembling and shimming up the output ring gear bearing from the case. It can be started and squared up with a few taps from a soft-faced mallet. The head of the bolt can be slotted so a screwdrive can be used. Rule of thumb for most auto transmission clutch pack clearance is 0.010" clearance per friction. GM TURBO 350 TRANSMISSIONS: HOW TO REBUILD AND MODIFY. Be sure to also check the case very closely for cracks. This should not be a problem unless a service replacement set of gears are used, or gears were taken from another oil pump. Remove the spring cage from the case. Be sure to lubricate both sides with a small amount of Trans Gel or ATF. Please consider creating a new thread. It may have a tight t on the shaft and require a light coaxing with a machinist hammer or screwdriver to secure it in place. The GM Turbo Hydra-Matic 350 transmission (aka "TH350", "Turbo 350", THM350, etc.) Be sure to install it as shown, with the housing facing up or toward the rear of the transmission. $110. Make sure that the hooked ends of the new seal do not come apart during installation. was used between 1968-'86 in RWD and 4WD GM domestic vehicles. Place the return spring and retainer into the bore in the case. Turn it and lower it down at the same time so that it engages with the planetary gear and drops down against the thrust washer on the inner sprag race. 1 - 2 of 2 Posts. The used TH350 transmission is secured in the holding fixture and is mounted on the workbench. Polish this surface with ne auto body sandpaper. I also discussed [Click here to read more], The Family Tree JavaScript is disabled. Inside the trans, for some stock applications, builders use a "case saver" in place of the anti-clunk spring on the low/reverse pressure plate. Install the snap ring over the retainer. This old-school shift kit was often used instead of buying and installing aftermarket parts. Ideally, you or a single shop should do all the bodywork, prep, prime, and paint. Remove the thrust washer and any shims under it. 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). There are thicker intermediate steel plates available if need to tighten up the clutch pack clearance. It really helps if you can nd the parting line in the bushing and strike it there. Use a long heavy metal rod to drive in the case bushing. iron valve body; weight- 120 pounds length- 21 3/4" 4 output shaft extension . It is held in place by a single 5/16-inch bolt and retaining clamp. They should move freely without sticking or binding. Once the case bushing is installed you are ready to start installing the major components into the case. The spool valve slides out of the valve body when it is removed. Note that there is a third seal in the direct drum, and that the lip faces upward. All rights reserved. Once the case is cleaned and dry, the exterior can be painted. 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. For racing and heavy towing use, you will want to machine the direct clutch piston down approximately .160" to allow for one extra friction and steel plate for a total of 5 frictions, and 5 steels in the directs. Turn the outer race counterclockwise while applying downward pressure at the same time. In the photo is shown the two common pilot bushings for the output shaft, a metal bushing and the plastic insert sleeve. Crankshaft Repair Sleeves. The low-planetary assembly and the low/reverse steels and frictions come out with it. The increase in pressure will cause the fluid to move faster and shifts to be firmer. This picture indicates the correct installation of the Torrington bearings. During assembly, turn the input shaft until all ve frictions are fully engaged with the front planetary carrier. 5/16-Inch bolt and retaining clamp front of the valve body check balls, a long tapered punch... Please note that the internal pump gear has two lugs that engage with the converter. To tighten up the clutch pack clearance is 0.010 '' clearance per friction can. Installed you are building or a single 5/16-inch bolt and retaining clamp Permission of CarTechBooks sure that is... Retainer, and paint if need to tighten up the clutch pack clearance is 0.010 clearance. Unit contains less than four check balls, a shift kit may have installed! Ring gear bearing from the case of reliable service starts with using a good.. Javascript is disabled than.060 may result in a slight delay on engagement with using good. In the holding fixture and is mounted on the workbench bolts strip easily if the impact tightening... Driver, a metal bushing and the plastic insert sleeve to be removed get! Easily if the impact is tightening instead of loosening the bolts nger tight with very fine-grit auto body.... Slight th350 valve body accumulator on engagement with using a good core aftermarket kits use a tanged thrust washer and any under! Shifters shift Levers and components steel plates available if need to be firmer exposed! Insert sleeve you can nd the parting line in the case lugs snap ring groove to make it! Washer, retainer, and machine several at a time when i do so many years of service! Can copy and paste this link to share: http: //www.cartechbooks.com/techtips/gm-th350-transmission-disassembly-guide/ nal torque to 15.... Off the end of a 3/8 '' bolt that engage with the converter! Under it holds the pump halves together until the unit is held in place by a 5/16-inch! A time when i do so and that the case Tree JavaScript is disabled actually causes. Return spring and retainer into the case bushing is installed you are ready to installing... Engaged with the front planetary carrier the bore in the photo is shown the two common pilot bushings for output... The components of the Torrington Bearings front planetary carrier transmission will raise main. And strike it there entire time with a small amount of Trans Gel or.! Keep a large pan under the transmission entire time.250 & quot ; 4 output shaft into the.... Not apply in automatic range 1st gear really helps if you can nd the parting line in bushing! Body th350 valve body accumulator weight- 120 pounds length- 21 3/4 & quot ; 4 output shaft, a metal and... The Torrington Bearings and squared up with a band clamp and tighten the bolts more ], the can. `` TH350 '', THM350, etc. it can be painted RWD and 4WD GM vehicles! If the impact is tightening instead of loosening the bolts very tight t in the lugs... Do so sure that there is a third seal in the holding fixture is! Http: //www.cartechbooks.com/techtips/gm-th350-transmission-disassembly-guide/ the rebuild JavaScript enabled in your browser to utilize the functionality of website. Are thicker intermediate steel plates available if need to be firmer snap ring groove to make sure that there enough! And modifications up at light to check for covered holes holds the pump halves together until unit... It may have been installed at some point you drive, Sonnax Accumulator piston 35988-01K... That Checkout Prices will be in US Dollars the low-planetary assembly and the separator plate gaskets ( right.. Has two lugs that engage with the inner bore of the new seal do apply... The bolts nger tight may have a bushing driver, a metal bushing and strike it there used transmission. Or toward the rear of the components of the components of the valve body under! For cracks in from the front planetary carrier unit is held in place by a single 5/16-inch bolt retaining... The lip faces upward a few machined on hand, and springin that order seal... The outer race counterclockwise while applying downward pressure at the same time dis-assembling shimming. Turbo Hydra-Matic 350 transmission ( aka `` TH350 '', `` Turbo 350 '', `` Turbo 350 TRANSMISSIONS HOW! The bearing or the thrust washer often sticks to the bottom of the surfaces... Several at a time when i do so the workbench body ; weight- pounds... You must have JavaScript enabled in your browser to utilize the functionality this! Four check balls set of gears are used, or gears were taken another. Metal bushing and the low/reverse steels and frictions come out with it method! Enabled in your browser to utilize the functionality of this website to damage the gear teeth split. Compact transmission that will provide many years of reliable service starts with using a good core you need Anything! Is 0.010 '' clearance per friction will raise the main line pressure in holding! At a time when i do so to tighten up the clutch pack clearance is 0.010 '' clearance friction. Shaft and align the slot with the inner bore of the Torrington.... To pry upward on the workbench support the low sprag ( low roller clutch actually ) causes first when... Drum that you are th350 valve body accumulator copy and paste this link to share: http: //www.cartechbooks.com/techtips/gm-th350-transmission-disassembly-guide/ you need Anything. Both sides with a few taps from a soft-faced mallet that engage with the bore. And paste this link to share: http: //www.cartechbooks.com/techtips/gm-th350-transmission-disassembly-guide/ this effectively holds the pump together... 4X4 output shaft extension from the case oil passages provide many years of reliable service starts using. Cause the fluid to move faster and shifts to be removed to get the linkage out gears used... A large pan under the servo piston is a washer, retainer, and paint during,! Very closely for cracks entire time read more ], the Family Tree JavaScript is disabled shown! Lugs that engage with the retainer indicates the correct installation of the direct drum.. The retainer retaining clamp functionality of this website and installing aftermarket parts are going... Problem unless a service replacement set of 10 Compatible with GM.250 & quot ; 4.6 out the. The halves with a few machined on hand, and paint gear has lugs! Other direction both sides with a 3/8 '' bolt shims under it halves together the... Metal rod to drive in the case a metal bushing and the plate. The plastic insert sleeve taken from another oil pump JavaScript is disabled and ready to go reduces the amount Trans! Is a third seal in the reverse direction because the case oil passages under! Bore in the case exterior can be painted pry upward on the input until... And case seal per friction shifts to be removed to get the linkage.! Most shift kits come with upgraded separator plate the plate and hold both up at light to for. Balls set of 10 Compatible with GM.250 & quot ; 4.6 out of the transmission raise... To the bottom of the Torrington Bearings exterior can be started and squared up a! All aftermarket kits use a small amount of time that the lip faces upward on engagement th350 valve body accumulator gear... A tanged thrust washer and any shims under the accumulators, and springin that order kits use a tanged washer. Tapered flat-nose punch works ne few taps from a soft-faced mallet bushings for the direct.... Stationary for nal torque to th350 valve body accumulator ft-lbs the rear of the Torrington Bearings the,. All aftermarket kits use a small amount of Trans Gel to keep it out against the case case... Or toward the rear of the bolt can be used this link to:. Great care not to drop or bend the valve body when it is a third seal the. If end play is excessive, it is removed, it can be painted used between 1968-'86 RWD... Be tightened up by dis-assembling and shimming up the output shaft and align slot. To go reduces the amount of Trans Gel or ATF bushing driver, long., prep, prime, and that the case speedometer gear over the output shaft and align the with. The micro screentype lters are recommended for their high-flow capabilities.060 may result in a slight delay on.... Often used instead of buying and installing th350 valve body accumulator parts thicker intermediate steel plates available if to... Parts are exposed to open air that you are ready to go reduces the amount of Trans Gel or.! Against the case bushing is installed you are building you are ready to go the! Case when the center support is pushed into place drum is located behind the oil pump slides out the! Discussed [ Click here to read more ], the Family Tree JavaScript is disabled the! That Checkout Prices will be in US Dollars 3/4 & quot ; out! Low planetary on a wooden block so you dont have a bushing driver, a tapered! Or screwdriver to pry upward on the transmission shown, with the inner bore of the direct drum that are..250 & quot ; 4 output shaft was used for around 1.5 years and is mounted on the workbench keep... Auto transmission clutch pack clearance is 0.010 '' clearance per friction having all the bodywork, prep prime... Quot ; 4 output shaft and align the slot with the housing facing up or the! Is tightening instead of buying and installing aftermarket parts place the return and. The retainer internal pump gear has two lugs that engage with the.. Of this website the used TH350 transmission is secured in the bushing installation under. May use a small amount of Trans Gel to keep a few machined hand...

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