Th350 Front Seal Leaking

ATP Automotive Re-Seal Stops Leak. Look at the TH400 pan gasket. Fluid leaks can result from many different causes, most commonly with faulty installation and broken seals. Note: There is a rubber gasket under the lock nut. If fluid is seen leaking between the engine and transmission, check if the fluid is red or brown. Torque Converter seal (front pump seal?) Dipstick tube O-ring (two actually, a larger diameter one to seal the tube just under the flange where it meets the case) Kickdown cable seal. Seals- Front Pump - It is vital to make sure that nothing important in your transmission unit leaks out and causes the parts to become flooded, and that is where the TH350 seals come in. The trans leaks from the front pump seal. When the truck is running and in park or in gear the trans does NOT leak a single drop. Common Causes of Transmission Leaks. The NP205 gear driven transfer case is considered by many to be the king of bulletproof. your problem according to you is not that seal. The TH350 is an automatic shift, three-speed transmission. The Turbo 350 transmission, commonly known as the TH350, was a 3 speed automatic transmission that began phasing out the GM Powerglide in 1969. Maybe I should look into an aux cooler! I would hate to pull the tranny to replace the front pump seal if it is ok. How do you change the rear output shaft seal leaking at rear of transmission only when running. Solve the problem with our front pump leak sealing kit for the GM TH350 Transmission, 1969 & up. My TH 400 leaks is not pan or rear seal, it leaks toward the front i took the fly wheel cover off no leak from front seal, If the pump seal leaks where can i find it leaking out from? Thanks Russ Shifter shaft, dipstick tube, Lots times, best wipe it down then watch for leaks. When combined with a 9. If you're looking to stop that annoying leak at the tail shaft seal or torque converter seal, we have what you need. Free Same Day Store Pickup. All new parts Items included: Front Pump Gasket Front Pump Oring Front Pump Metal Clad Seal Front Pump Bushing Front Pump Bolt Washer kit Designed to stop leaking at the front of your TH400 transmission. The leak is about where the tranny and oil pan meet and a littlle towards the driver's side. I have had the selector seal leak on a 2004R. Transmission Case, Extension Housing, Gasket and Seal. rear vs auto gearbox seal leak I guess a worn front uni joint could also wear out a rear gearbox seal pretty quick if it had a lot of play in it and moved around. I reused the yoke from the TH350 that was in the truck before. Rear Main Seal Leaks (Part 1) So you've got that embarrassing oil spot under your Chevelle and it's dripping off the flywheel dust cover. Find our best fitting transmission seals for your vehicle and enjoy free next day delivery or same day pickup at a store near you!. MUNCIE M20 M21 with 27 SPLINE & SMALL REAR BUSHING FOR 1. Gm Th-350 Transgo Transmission Shift Kit 1969-1983 Sk350. Any ideas? Thanks. I am pretty sure the 2004R is the Hughes pan leaking, had seepage on multiple transmissions. Its a brand new seal that came with the rebuild kit, and the only reason i can see why it is leaking may be because the part of the adapter plate that slides into the tranny, doesn't fit right. Main seal leak does not necessarily mean rear main seal. I have a th350 paired with a np205, i think i may have transmission fluid leaking into my transfer case, i have been told i need to pull the tranny and transfer case out of the vehicle to repair this. A lot of people forget to do them - and some transmission shops aren't particularly careful about putting these seals in carefully on their rebuilds. TH350 Transmission REAR SEAL & BUSHING KIT. If you manually shift from 1-2 it shifts firmer than in drive but in drive or manually you barely feel a shift from 2-3. If you want to see where it's leaking from: 1. If it is a pump seal , that means the pump bushing is wore out and you will need a bushing , seal and torque converter at minimum. From what I can tell its not coming from the cable now. Locate Th350 Cover on sale here with the largest selection of Th350 Cover anywhere online. Questions?? Send us a message through Ebay and we will respond ASAP. All new parts. No leaks!. The front seal is usually made of rubber, much like the rubber in a windshield wiper blade. 727 could be seal or overheated trans and started blowing out vent in front right behind convertor roller dynos are very hard on convertor car and if guy running it is not that verst in it worst yet if it is a vent leak may want to move it to rear of trans and put catch can on it. new transmission about 40k miles ago. Often this leaking is caused by scoring on the shift shaft itself, preventing the seal from doing its job. Also, check your crankcase breather circuit, many times on these old dogs, they are clogged, and that leads to pressure building in the engine, and it pushing oil out the weakest seal. Cars (US) » th350 front pump. rear vs auto gearbox seal leak I guess a worn front uni joint could also wear out a rear gearbox seal pretty quick if it had a lot of play in it and moved around. Discover Chevrolet Turbo 350 Transmission on sale right here with the biggest option of Chevrolet Turbo 350 Transmission anywhere online. Will it fix large leaks? probably not. Discussion in 'The Hokey Ass Message Board' started by evobuilder, Mar 9, 2013. If you've got an oil seal leak in a very inconvenient place, then this video by Scotty Kilmer will show you how a little bottle of re-sealer may be able to fix that leak. I also use TRANSTAR parts and there part# is 61991 ,which you might be able to purchase at a local tranny shop if you dont have a GM dealer handy. What's my setup? New (500 miles) ATK 383 stroker crate engine with new TCI Th350. The parts and labor required for this service are. you need to pin point the leak and make sure the oil is red. Compared to rebuilding an entire automatic transmission system, fixing a front pump leak would be less expensive and easier to do. All new parts. Torque Converter. So, I put the car up on stands and let it sit and run for around 15 minutes. park it, start the engine and let it idle warm, with your foot on the brake and parking brake engaged and no one in front or behind you move your shift lever from park to drive-n-reverse and back and listen to the sounds. Buy Ten Pack - CT Solutions CT3403 TH350 Front Pump Leak Seal Kit Turbo 350 Transmission - Order Only From Seller CT SOLUTIONS to Assure Correct and Quality Product: Pump Shafts - Amazon. Fluid leaks can result from many different causes, most commonly with faulty installation and broken seals. I want to sell it and if it's an easy fix I wouldn't have to discount it because it leaks as it runs fine. Answer this question I have this problem too Subscribed to new answers. front seal installation on automatic transmission Th350 Turbo 350 | Front Pump And Pan Removal and share it all with friends, family, and the world on YouTube. One of its main components is the seals and gaskets that control the flow of hydraulic fluid and keeps it from leaking out onto other parts of the engine. The transmission got so hot that it softened the front pump seal and caused it to literally purge the transmission of fluid. Order AT Front Pump Seal for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. 177 results for th350 seal kit Save th350 seal kit to get e-mail alerts and updates on your eBay Feed. This fits TH350 and TH400, for 3. what is the seal called that i need to replace if i do indeed have a leak between tranny and transfer case? also i am just wondering what the general concecous is re the th350 and np205 as a pair. If you are going to pull the trans,I would recommend doing the complte job to avoid having to do it twice,also make sure the converter hub is not worn, if so you will need to replace it as well as the front pump bushing. There are 4 seals at the front, crank, countershaft, and the 2 cams. my napa friend said his was a FREEZE plug leaking. Skip to content. I'm willing to bet the leak is the same going forward or backwards, but you probably notice it more when you back up and the fluid sloshes out toward the front of the bell housing. it leaks pretty good. Its leaking from the pan itself. Order Transmission Seals for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Everyone hates leaks in their classic. With a standard PCV, the problem was the same. We put the transmission back up started it and leaking again. When I picked it up the transmission was leaking from the front seal. It still helps to clean the case with a power washer or at least apply enough effort cleaning it to remove heavy deposits of oil, dirt, and caked on debris. To save money, you can troubleshoot the Chevy yourself for a transmission leak before taking it to a mechanic. Everyone hates leaks in their classic. The only issue of note was a rear main seal leak that turned into a MAW engine swap project that I had already been working towards anyhow. It CANT get past the big "O" ring--. The fix? Since you really don't need two vents, simply use a cup plug or set screw to plug the front vent. This is the front pump to torque converter metal clad seal for GM's 700R4 and 4L60E automatic transmission. - Super Chevy Magazine. Our TH350 to Dana 300 conversion makes for a very strong, and capable assembly both on-road and off-road. Skip navigation Sign in. We also it for its value for the dollar. GM Turbo 350 Front Pump Leak Sealing Kit TH350 Transmission. Return Policy * 30-Day Risk FREE return for refund or replacement If you are not 100% satisfied with your returnable items, return the product for a refund. Ford C6 Transmission Seal Kit These TCI transmission rebuild kits are ideally suited for Off-Road, Towing meduim duty applications like the TH350, TH400, C4, C6, 727 and more. There are two main types of oil seal: static and. I had what appeared to be an oil pan leak on my Corolla, but I also noticed the valve cover was leaking a bit. The front pump input seal is my bet for where the leak is coming from. These leaks are hard to find since air movement under the car forces the fluid toward the back of the car while driving. behind the converter you have the front seal and the pump !. hello, i just replaced my seal on the extension housing at the yoke. Intermediate accumulator cover seal; Checkballs; This external seal and gasket set comes with all seals, gaskets, and o-rings to seal all external portions of your transmission. A new metal clad selector shaft linkage seal for the ST300, TH350, TH400, TH700R4, 4L60 and 4L60E Transmission. in order to change that front input seal you have to remove the transfer case off the transmission and change it that way and re silicone the outer edge of the transfercase to seal the transfluid in. Chevy Transmission to Transfer Case Seal issue…1 Here is the problem, When I got into my truck the other day started it and put it in gear, it did not move for a second before gently going into gear. i'm tracing a very strange oil leak. 456 gears front and rear. You can see how different it is compared with the TH350. - Super Chevy Magazine. even when new it was leaking around some of the back bolts which was weird. i was not doubting you but have seen to many questions that they did. JEGS Transmission Front Pump Seals are made from quality materials to insure against leaking and premature wear. I have a 1970 Nova with a TH350, it is leaking from the dip stick tube seal so I thought I would remove the retaining bolt, pull the tube and replace the O-ring but I can not get the tube out of the transmission. The front main seal, located behind the timing gear on the crankshaft is the more likely culprit. I just replaced the O ring on the dip stick tube on a Turbo 350. Browse Leak Stop in stock and ready for shipping right now! Vintage Car Parts Store. FLUID LEAKS Fluid leaks can occur around the input shaft seal, axleshaft seals, case split lines, and the end cover. I have rebuilt a lot of Turbo 350 / 400 transmissions of the years and the first piece I replace is the front pump. The TH350 valve body is cast iron and has steel valves. hello, i just replaced my seal on the extension housing at the yoke. The TH350 transmission was introduced in the 1969 model year as the successor to the GM Powerglide automatic transmission. 1948-1954 Buick - $80. Find great deals on eBay for turbo 350 transmission front pump. Originally posted by [email protected] 24 2010, 02:34 AM~18391108 this is tricky business so listen up your leak can come from hard lines, cracked tranny, warped pan, bad gasket seals on rear shaft or front shaft. Each housing comes with all necessary seals for a leak-free installation. New door weatherstripping and trunk seal. When it shifts from 1st to 2nd its got a really smooth shift and it puts a smile on your face. Electrical Connector and "O" Ring Seal. Shop tells me I'm leaking engine oil and transmission oil from the rear main seal or what the tranny guys say is the front seal. Replacement Shift Boot for Front Shift Conversion Shifters. Vacuum Modulator and "O" Ring Seal. Aside from the engine problems we had on my Son Dan's rpu (which should now be fixed with the new motor) he also had a persistent fluid leak from the TH350 transmission. Transmission (Group 4) TPG649 TPG645 Master Overhaul Kit: Gaskets, Friction (lined) Clutches, Lip Seals, Steel Clutches, "O" Rings, Front Pump Seal Sealing Rings and Extension Housing Seal. I made a pulley holder from a piece of flat stock. All new parts. General Motors makes Chevrolet cars and trucks. FLUID LEAK Oil Pan and Oil Pan Gasket. The seal was around $20 and can be done in a few hours. front pump bushing seal o-ring gasket kit 5r55e 4r55e 4r44e a4ld transmission front pump bushing. “While oil leaks are a concern and are the first indication of a poor seal between the block and pan, crankcase vacuum leaks will often occur from improper gasket installation and poor preparation at the front or rear radius gaskets,” says Schroeder. The fix? Since you really don't need two vents, simply use a cup plug or set screw to plug the front vent. When combined with a 9. But I got the rest of the seals changed. If its trany oil then it can be coming from the front pump seal or converter seal. Then about 6 or 9 months ago he front seal started leaking. Only with the shift shaft in place how would you get that inside the seal? You could get it after the shaft is removed,but to do that you need to remove the pan anyway. Again, there is no leak at idle when hot or cold. It seems to leak a bunch of transmission fluid after setting for a period of time. 8) is very important. The housing comes with the o ring and shaft seal installed with a metal retaining clip. The transmission got so hot that it softened the front pump seal and caused it to literally purge the transmission of fluid. I pulled the one from the Caddy for the second time and the trans shop guy took pity of me and fixed what was really wrong - the front pump has to come out and the converter/front pump bushing has to get fixed, then reassembly and a new front seal. View Details. Yeah, you'll know the grommet is a better seal because it can be a pain in the arse to get the dipstick in. You're thinking it's the rear main seal. You have a leak that comes from a seal that is an -external seal- (independent of whether the TC holds it's oil or not) such as those already mentioned like the front pump seals. It still helps to clean the case with a power washer or at least apply enough effort cleaning it to remove heavy deposits of oil, dirt, and caked on debris. It's not too hard to replace the seal. The vehicle in this video has a leak in the front main seal of the automatic transmission. in order to change that front input seal you have to remove the transfer case off the transmission and change it that way and re silicone the outer edge of the transfercase to seal the transfluid in. and you will see a shaft sticking out of the front of the trans. Here's the step-by-step on adding a TH350 behind your big or small Chevy engine. In this case we used a “print-o-seal” type of composition intake gasket which incorporates a special bead of sealant built tight into the gasket surfaces. With these, you will not have to worry about any excess fluid e. Fatsco is a worldwide supplier of automatic transmission parts for foreign and domestic vehicles dating back from 1941 through current day. We also used black rtv for the end seals rather than the typical rubber seals as they have a tendancy to shrink with heat and start leaking oil. Could be the front pump O ring, front seal, TCS switch, cooler lines, tough to tell. We offer a full range of kit levels that include all necessary soft parts to complete a transmission rebuild no matter how extensive the job's parts needs. Broken Seals. and not motor oil pics if possible. On the driver side there is a shaft (linkage) that comes into transmission which shifts gears (from P do D etc. But once I bought the truck and closely examined the leak, I discovered that it was coming out of the yoke itself. I have a '77 Chevy Silverado PU and had the crank, (rod's, mains, pump, etc) replaced. Hi Guys, I Have a TH350 and have tried a few things to get it to stop. it is where the drive shaft enters the transmissuion. A front-wheel-drive car has oil seals on the drive shafts at the front wheels. It is not the fault of any one seal, but with the clearances of bushings and machined services. For TH350 transmissions, this housings is cast in heavy-duty aluminum and machined to keep the gear in place and accept your speedometer cable. It still helps to clean the case with a power washer or at least apply enough effort cleaning it to remove heavy deposits of oil, dirt, and caked on debris. I have removed the entire tail section, installed a new bushing, and at this point, I am on my 3rd new seal. The front pump input seal is my bet for where the leak is coming from. While there are several common places for leaks on the Turbo 350 Transmission, you may discover that you have a driveshaft yoke problem versus a transmission problem. Step 4: Install the clamp for the modulator and tighten the bolt to 12 ft-lbs. Finally got the buggy running tonight and have a leak from the rear of the supposedly rebuilt Th350 I picked up. No noticeable leak at 1,500 rpm either. Questions?? Send us a message through Ebay and we will respond ASAP. For TH350 transmissions, this housings is cast in heavy-duty aluminum and machined to keep the gear in place and accept your speedometer cable. An automatic transmission has many seals and gaskets to control the flow of hydraulic fluid and to keep it from leaking out. So it's definitely something you want. Perfect for clearing the bench seat on a Tri-Five, Street Rod, Kit Car or truck. It's best to get it looked at as soon as you begin to hear that rattle, as it can lead to bigger problems. hello, i just replaced my seal on the extension housing at the yoke. Re: TH350 leaking like a stuck pig! I would say, that since it leaks when it is not running, it probally is not the seal. Tried using the ratchet strap/chain to the frame method without luck. It works quickly and effectively in stopping all leaks in the transmission. MOD01 465H Modulator Large Black Canister TURBO HYDRAMATIC 400 (3L80, M-40) 3 SPEED RWD HARD PARTS. Compared to rebuilding an entire automatic transmission system, fixing a front pump leak would be less expensive and easier to do. Neil passed away 18 Sep 2015. A worn bushing will cause excessive side-to-side movement of the slip yoke and create a vibration or leak. We also it for its value for the dollar. This is a fine way to whittle what you have in front of you. For TH350 transmissions, this housings is cast in heavy-duty aluminum and machined to keep the gear in place and accept your speedometer cable. He replaced the front seal and told us there has to be a lip around the seal, He rebuilt the front pump, new bushing, new seal, new o ring, and a new gasket. I never had it fixed. Cooler Line Fittings and Pressure Tap. I was wondering if there is a way to get the tube out without moving the motor from. I call a transmission shop the guy says it is probably a spun bushing, not a seal and probably needs a new transmission. I put to much oil in my 2012 vw turbo but had some removed, the oil pressure rose to 220. 350 Transmission Parts. It is no wonder that the one person who has “fixed thousands of cars” but doesn’t show as a pro, recommends Lucas Oil. That is a nifty tool. Well I just happen to have some pictures of a rear seal replacement that we did in my shop that might help shed some light on why it costs so much to replace. Never ignore a leaking automatic transmission front pump as a substantial loss of transmission fluid would likely destroy your vehicle's transmission. Here's the step-by-step on adding a TH350 behind your big or small Chevy engine. Any ideas? Thanks. At the front of the engine there is a seal that designed to control oil from leaking out. When I picked it up the transmission was leaking from the front seal. All new parts. Includes high performance bushings, seals and high flow lube circuits. There is far more fluid contained directly above the pan than in the pan itself; the pan is more like a "cover plate" than like. NP205 New Process Transfer Case Diagram. Automobile Parts and Service Toggle navigation Community Chevy Automotive Sales Inc. New Atp Set Of 4 At-205 Re-seal Stops Leaks 8 Ounce Bottle. 50 T350 Front Rear Oil Seals Th350 Front Pump Seal Extenstion Output Turbo 350. A common problem for an LLV postal truck is a transmission fluid leak at the speedometer drive gear on the side of the transmission. Replacing a Pinion Seal Replacement of the differential pinion seal on a Chevelle can be performaned by more than one method. The thin is driver-side dipstick only and the thick is either. External Seal-up Kit: Stops any external Leaks. I drove the car from my dads house to mine and now its pouring fluid again. This video will show you how to repair this transmission leak at the seal. JEGS Performance Products 60303 Transmission Front Pump Seal Kit TH350 Includes: A-Team Performance GM 2771004x Hydro-Boost Repair Kit Seal Leak Repair Universal. This seal is located at the front of the crankshaft as it protrudes out of the front of the engine block. My question is, Is it a lot of work to replace this seal? Or could the leak be coming from some other part of the trans?. You'll need to get the pan off as the selector shaft has to be removed to change the seal. Save on Seals & O-Rings with great deals at Advance Auto Parts. This thing was leaking pretty bad. my turbo 400 leaks right where the speedometer cable goes into the tail shaft. Hi Guys, I Have a TH350 and have tried a few things to get it to stop. I reused the yoke from the TH350 that was in the truck before. This is an excellent kit to have on hand when you notice a small leak. Includes high performance bushings, seals and high flow lube circuits. The cause of this problem is the upper channel plate gasket. Technical Manuals Extension Housing and Components Filters Friction Plates Front Clutch Retainers and. Get the job done with the right part, at the right price. Is this the end of the Windstar? Not sure I wanna do another major overhaul. Cars (US) » th350 pump. behind the converter you have the front seal and the pump !. Are you doing an overhaul? Replace brittle, aged front pump seals with new ones from ATI. Shop with confidence. We also it for its value for the dollar. If it's the right side front from in the car i'd look at the dipstick and the seal under the kickdown cable for sure. On a TH350 I owned at one point I kept getting an occasional leak after doing some work on it. I rebuilt my 700r4 and had a leak at the rear seal. 359 A C TURBO HYDRAMATIC 250, 250C, 350, 350C 3 SPEED RWD (Lock Up & Non Lock Up) Revision 09/2012. Local junkyard had one that cleaned up like new and now no more leaks. These shafts where hard to find until now. A common problem for buyers of output shaft seal replacement parts is that it tends to get damaged easily once the output shaft bearing leaks. hello, i just replaced my seal on the extension housing at the yoke. When I get a new 400 to drop in my F/bird I'll do the seal. For TH350 transmissions, this housings is cast in heavy-duty aluminum and machined to keep the gear in place and accept your speedometer cable. I have a transmission fluid leak that I can't seem to fix. Just trying to get some info that can help me in my situation. 359 A C TURBO HYDRAMATIC 250, 250C, 350, 350C 3 SPEED RWD (Lock Up & Non Lock Up) Revision 09/2012. Always check the transmission fluid's color because ATF will turn brown from heat and oxidation. The Oil Stop Leak is a universal application, so that would treat a leaking oil pan gasket, valve cover seal, rear main seal, transmission, power steering, etc. Never thought a leak like this was a reason to change a transmission. i know someone wrote in on this. OK there is no need for an RTV sandwich. How do you change the rear output shaft seal leaking at rear of transmission only when running. You have a leak that comes from a seal that is an -external seal- (independent of whether the TC holds it's oil or not) such as those already mentioned like the front pump seals. Everyone hates leaks in their classic. my turbo 400 leaks right where the speedometer cable goes into the tail shaft. General Motors makes Chevrolet cars and trucks. Hi Guys, I Have a TH350 and have tried a few things to get it to stop. The pump bushing on the old pump was cracked and looked mechanically damaged. If it is a pump seal , that means the pump bushing is wore out and you will need a bushing , seal and torque converter at minimum. Compared to rebuilding an entire automatic transmission system, fixing a front pump leak would be less expensive and easier to do. find the leak (pan, dipstick, front seal, cooler lines, etc). new transmission about 40k miles ago. I am working on a 72 C10 with a 307/350 turbo combination. Find Turbo 350 Transmission Parts on sale here with the largest choice of Turbo 350 Transmission Parts anywhere online. Each housing comes with all necessary seals for a leak-free installation. 904 or 727 904 could have broken convertor hub. I call a transmission shop the guy says it is probably a spun bushing, not a seal and probably needs a new transmission. Shop with confidence. GM Turbo 350 Front Pump Leak Sealing Kit TH350 Transmission. You're thinking it's the rear main seal. No leaks!. CSI Automotive Sales, Service & Parts. What finally fixed it was a later model dipstick tube with the "tophat" gasket and a new kickdown cable with a new seal in it as well and a new pan gasket with plenty of silicon RTV. I guess it's a front seal on the trans. What has been done to date. It works quickly and effectively in stopping all leaks in the transmission. Always check the transmission fluid's color because ATF will turn brown from heat and oxidation. The Kevlar band is a VERY good band so long as the band clearance is not too tight. I have replaced the pan gasket and replaced the front seal but it still leaks. We put the transmission back up started it and leaking again. Oil Pump Assembly Pump to Case Gasket. I have a 1970 Nova with a TH350, it is leaking from the dip stick tube seal so I thought I would remove the retaining bolt, pull the tube and replace the O-ring but I can not get the tube out of the transmission. If you're looking to stop that annoying leak at the tail shaft seal or torque converter seal, we have what you need. I also ordered 2 extra shaft seals. I have a transmission fluid leak that I can't seem to fix. Here's the step-by-step on adding a TH350 behind your big or small Chevy engine. “While oil leaks are a concern and are the first indication of a poor seal between the block and pan, crankcase vacuum leaks will often occur from improper gasket installation and poor preparation at the front or rear radius gaskets,” says Schroeder. See Figure 10A-4. ATP Automotive is the best transmission leak sealer that performs well and can be used for stopping other leaks. For this amount, you will get a replacement of the pan bolts, drain plugs, seals, gasket, fluid lines. Thank you Monster Transmission. If its trany oil then it can be coming from the front pump seal or converter seal. I am getting ready to pull it out and put it into my 79. TH400 leaking from the front? Solve the problem with our front pump leak sealing kit for the GM TH400 Transmission, 1965 to 1998. it leaks pretty good. I put to much oil in my 2012 vw turbo but had some removed, the oil pressure rose to 220. Hydraulic Pump With Accessory Drive Housing And Gear - Lycoming Engine -1500psi Hydraulic Pump - $500. Proprietary materials, installation aids and proven technologies help ensure a reliable seal on even the most troublesome applications. Free shipping to any U. Re: Th350 speedo leak , not working by Rickracer » Mon Nov 01, 2010 8:27 pm The nut does NOT do the sealing, but if it's not tight, the cable can wobble the gear around and cause the seal inside the bullet to leak. JEGS Transmission Front Pump Seals are made from quality materials to insure against leaking and premature wear. what is the seal called that i need to replace if i do indeed have a leak between tranny and transfer case? also i am just wondering what the general concecous is re the th350 and np205 as a pair. Governor Cover and Gasket. Th350 Amp 22 Amp quality assurance and price concessions. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Well low and behold it is not leaking now. GM TH350 Automatic Transmission. External Seal-up Kit: Stops any external Leaks. Sometimes i've had to put some sealer under the bolt heads to stop silly leaks off the pan gasket. When I picked it up the transmission was leaking from the front seal. GM Turbo 350 Transmission Rebuild Troubleshooting Guide Troubleshooting is the step-by step process where you can logically diagnose a problem. I have a transmission fluid leak that I can't seem to fix. Aside from the engine problems we had on my Son Dan's rpu (which should now be fixed with the new motor) he also had a persistent fluid leak from the TH350 transmission. With these, you will not have to worry about any excess fluid e. Put loctite on the outside of the seal to stop the oil ingressing past the case. That was a tricky one Sep 23, 2019. The trans leaks from the front pump seal. org but have been reading posts on here for quite some time. Gently tap new transfer case seal replacement way into place using hammer or rubber mallet. On the driver side there is a shaft (linkage) that comes into transmission which shifts gears (from P do D etc. Transmissions often leak from a loose pan, caused when bolts aren't properly tightened after a filter is changed. The process included replacing the critical seals (front and rear as I don't remember the names) so I never got leaks from those areas. 1948-1954 Buick - $80.