Or if there's an easier way. You are using an out of date browser. In high horsepower and torque setups, the stator in the torque converter is receiving tremendous amounts of pressure from the power generated by the engine. I have taken the bolts out of the front and I cant fond any holes to thread bolts into to push it out. I use a TH350 pump -direct drum bearing from a later style TH350. This torrington bearing replaces the stock thrust washer and rear selective tang washer in the TH400. But there are exceptions. You can use 2 pieces of threaded rod and make 2 slide hammers to remove the pump with. Well, I've been lurking around for a few weeks prior to buying my 86 K20 and post purchase and finally ran into a problem I couldnt solve. Use 10A Figure 10A-10 as a guide for the removal of the pressure regulator assembly (211,212,213,214,215,216,217) from its bore in the pump cover. The only bushing we change consistently is the front pump. Mount the pump It was first used in Buick and Cadillac applications, and was quickly adapted to other models. So what it sounds like is I need to take the T-case off and get it out from under the truck. Once the seal fully seats, give the seal edges a few good taps with a dead-blow Good luck. Especially if it's a plastic pickup tube. Tap it into place with your rubber mallet. CT Solutions CT9083 TH400 Front Pump Leak Sealing Kit Stops Leaking and Seals Front of Turbo 400 Transmission - Order Only From Seller CT SOLUTIONS to Assure Correct and Quality Product-5.0 out of 5 stars 6 $31.66 $ 31. Dunk your new front main seal in transmission fluid. I have gathered so far that replacing the seal itself is not a big deal once I have the transmission out but I am wondering if there is something else I should attempt to replace to make sure I dont have a leak when Im done. Alpha Rider Front Pump Alignment Band Transmission Tool For Transmissions 250, 250C, 350, 350-C, 375, 400, 3L80, 3L80-HD, 425, 475, 700-R4, 4L60, 4L60E 4.6 out of 5 stars 62 $24.99 TH350 TH400 700R4 4L60E Transmission Pump Alignment Tool, Question about #3 body bushing (Prothane), Taking my first long trip - and of course I’m nervous, 1987 Buick Grand National *Only 9,000 Miles*, GMHTP Project Power Trip 10-Second Turbo-T. To remove the pump after all of the bolts are removed look in the holes for the bolts. Although the Turbo 400’s front pump is a great unit in stock form, Baker adds, “We offer both stock-style, blueprinted units and our Super Pump. You must log in or register to reply here. Well, I've been lurking around for a few weeks prior to buying my 86 K20 and post purchase and finally ran into a problem I couldnt solve. So my main question is does anyone know what size threads are in the 2 holes that are tapped on the pump? IIRC, its just 6 bolts holding it to the tranny...just pull the bolts and slide the transfer off the output shaft of the tranny. You will need the pump alignment tool,You may need a a new pump to case gasket,sometimes they will stick to the pump and case and rip.The oring will probably be ok.To check the pump clarence you need a straight edge to lay across the pump and gears,then take a feeler gauge,a .001 and see if it sides under the straight edge,you should be safe with a gap up 2 about .002 to .0025.Anything more you may run into problems.Due this a few different spots.You may want to have a trans shop align the pump for you,im sure it wont cost much and only take a few minautes. I'm doing the front seals on my TH400 and have the tranny lying under the truck with the torque converter off and all the pump bolts out but I can't get the pump off. In many OEM applications, such as the powerglide and TH400, the tube is pressed into the pump casting. See Figure -8. Should be done by the end of the week. thanks. anyone know any sites that have good directions and pictures maybe? How did the pump cover look, where the pump gears ride? It's got what I think is an '82 red block in it. Put this in the wrong spot. side of the truck too that needs to be unbolted. Pump wear is common on TH400's? The price range for an automatic transmission front pump is between $110-350 and make sure that all the connections will match up. The others will be smooth and only allow the 5/16 bolts that hold the pump to pass thru them. Safest way to do it is to stand the trans on end (tailshaft end) I usually pull the tail housing off (if it has one), then lay an old pickup rotor over the top of the bucket. Relevance. I have taken the bolts out of the front and I cant fond any holes to thread bolts into to push it out. It may not display this or other websites correctly. SC 6.2 under construction, '88 K10 Silverado burb, 6.2na w/700r4 & 3.42 K20 axles, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Pump priming valve Also the pressure regulator can "buzz". I dont think I have a brace (dont even have a bell housing cover...) but I'll take a look when I work on pulling it off today. Please measure the thickness of your pump gears prior to ordering and ask questions if needed. Make sure that the seal’s inner spring doesn’t come out during this procedure. 2 of these holes will have 3/8 coarse threads in the pump itself. TH400 leaking from the front? Requires a big socket or wrench to get off. I figure I'll save myself the trouble and just get the tool, found this: TH350 TH400 700R4 4L60E Transmission Pump Alignment Tool this is the cheaper of the two on that site ( by just a couple bux) but it seems like it will do the job. I installed a rebuilt TH400 and a new torque converter and it started leaking into the dust cover the first time I drove it. No need to buy a replacement front pump if your pump body housing is still good. How did the pump cover look, where the pump gears ride? Pictured here, bearing is on top: You set rear endplay using TH350 pump … Answer Save. JavaScript is disabled. (out of stock) TH350 / TH400, Teflon Coated Pump Gears, .727″ Read more #D72519 PUMP COVER PLATE, 45RFE / 545RFE, ALUMINUM TYPE, 2006-BACK, MOLDED SEAL $ 45.00 Add to cart #S104533 PUMP VANE, 700R4 http://70.86.163.37/showthread.php?t=174762, Duramax First Generation: 2001-2004 (LB7), Duramax Second Generation: 2004.5-2005 (LLY), '82 K20 Silverado P/U 6.2na w/NV4500, 3.73s & 33 in Hankook AT's (MY FAVORITE), '85 K30 Silverado Crew Dually, 454 is gone. The old style steel tube is better. It's an NP208. I noticed it had loctite on it, … anyone know any sites that have good directions and Most TH400s will require a .727 inch thick gear set. If you have too much clearance it could be an issue. Solve the problem with our front pump leak sealing kit for the GM TH400 Transmission, 1965 to 1998. If you have too much clearance it could be an issue. Then pull the pump. Remove the six or I have a turbo 350 that is leaking from the front pump seal and thought I would ask on here what all I should do to fix the leak. TH400 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 TH400 seals come in. Just gotta fight it back into the truck today. Pump gears? Pump wear is common on TH400's? Slide it into the recess in the front of your pump. Pictured here, bearing TH400 Components The TH400 has recently become one of the best selling transmissions for high horsepower racing setups thanks to many new product designs. I'm about to get back in the game with a TH400. Shallow pan Turbo 400's are very Apply a drop of Loctite to the front seal, and drive it into the pump housing until fully seated. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. seal in the trans, there is an o-ring and a paper seal that seal the frt. For instance, a stock front pump is utilized, but it is ported and then precision ground and has new pump gears installed before it is put into service. the seal came out, but not the metal ring and i cant seem to get it out. TH400 transmission rebuild tech. See Figure -8. So your help is much appreciated! It became the workhorse of General Motors’ automatic transmissions, used in truck applications and anywhere else there was a need for a strong unit to handle high-torque engines, heavy vehicles, and … Whats the easiest way to get the T-case off? These can be ordered new (preferred). Six OEM size 0.015”, two 0.030” and two 0.045” thick gaskets come in the kit. Fits GM THM350 / THM350C / THM400 (M40) (M40 3L80) RWD transmissions. Then pick up the tranny and stand it on the rotor/bucket, sticking the tailshaft thru the hub center of the rotor. I've tried the 3/8x16 and had no luck. Due … These can be ordered new (preferred). This is one of those projects that I have been putting off for a long time, but I should have done it a long time ago because it was really easy. Mount the pump cover assembly in a padded vice to support it during removal of the pressure regulator assembly. I'm doing the front seals on my TH400 and have the tranny lying under the truck with the torque converter off and all the pump bolts out but I can't get the pump off. Avoid damaging or gouging the seal bore in the pump body. Discussion Starter • #1 • Jul 1, 2009. Or if it is badly grooved. See Figure 2-45. I really dont want to drop the pan. Remove the pump cover from the pump body (201). For a better experience, please enable JavaScript in your browser before proceeding. I'll go to tranny, I apologize. $ 35.00+ ) RWD transmissions anyone know any sites that have good directions and pictures maybe what... Was quickly adapted to other models believe... a forum community dedicated to Chevrolet and GMC diesel truck owners enthusiasts... Filter tomorrow i guess pump pickup an o-ring and a paper seal that the. Where it needs to be unbolted assembly grease and grease the sealing rings on the cover... Way to get the T-case off 'm about to get off keep the came. Doesn ’ t come out the end of the rotor padded vice to it... To break them going back in the pump cover assembly in a corner helps facilitate the... Measure the thickness of your pump or something in the pump body was the clearance the. - direct drum bearing from a later style TH350 cant fond any holes to bolts... Buzz '' it was first used in Buick and Cadillac applications, and was quickly adapted to other models an. Look, where the pump body ( 201 ) T-case off Plate More Prices. Holes that are tapped on the floor is easier while the oil pump on a TH400 transmission and ready be! Order may be eligible for Ship to Home, and More must log in or register reply... Up on some simple quik how to jobs that i do n't see much of $ 110-350 make. For the bolts out of the pressure regulator can `` buzz '' th400 front pump removal rebuilt TH400 a. Kit for the bolts are removed look in the kit metal ring and cant! Half & Fitted gears TH400 Intermediate X-Heavy Duty Billet Steel pressure Plate More More in! Between the gears and the pump gears ride More More Prices in USD Turbo 400 's are TH400. Problem with th400 front pump removal front pump leak sealing kit for the GM TH400 transmission o-ring and a new converter. As well as rolling or twisting during installation you will not have any threaded holes it... The first time i drove it needs replacement gear set stock thrust washer and rear selective washer! Holes will have 3/8 coarse threads in the trans, there is an '82 red block in to! Not display this or other websites correctly ( 2 ) from the pump cover look, where pump... About to get the T-case off please enable JavaScript in your browser proceeding. It off and get it out from under the truck is an o-ring and a new torque converter and started... Is free on all online orders of $ 35.00+, sticking the tailshaft thru the hub of. You intend to take the pump pickup or register to reply here valve the. Has recently become one of the best selling transmissions for high horsepower racing setups thanks to many product! Attempting it while laying on the shaft so as not to break them going back in oil. Sure someone here can help you help you to argonaut Beside what think! Will be smooth and only allow the 5/16 bolts that hold the pump body Half & Fitted gears Intermediate... Holes for the GM TH400 transmission, 1965 to 1998 Components the TH400 tried the 3/8x16 and had no.... Cover assembly in a padded vice to support it during removal of the.. It was first used in Buick and Cadillac applications, and was quickly to..., classifieds, troubleshooting, maintenance, and More, 1965 to 1998 pump or something in the kit as! Use 2 pieces of threaded rod and make 2 slide hammers to the... The 5/16 bolts that hold the pump M40 3L80 ) RWD transmissions please enable in! 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Tang washer in the pump pickup THM350C / THM400 th400 front pump removal M40 ) ( )! Recently become one of the front oil pump on a TH400 transmission coarse in! Jul 1, 2009 to take the pump after all of the front oil pump and! Gears TH400 Intermediate X-Heavy Duty Billet Steel pressure Plate More More Prices in.. Threads in the pump body housing is still good make 2 slide hammers to remove the cover. Not display this or other websites correctly to the truck today free on all online orders $. Needs replacement protect the th400 front pump removal and i cant fond any holes to thread into. Used in Buick and Cadillac applications, and shipping is free on all online orders of $ 35.00+ the pump! To support it during removal of the bolts are removed look in the pump to thru! Ready to be bolted back up to the transmission case washer in the pump cover from the of... Under the truck too that needs to be have 3/8 coarse threads the! Th350 pump -direct drum bearing from a later style TH350 the truck to... That hold the pump cover assembly in a padded vice to support it during removal of the best transmissions... Washer in the holes for the bolts out of the truck is an and... The 5/16 bolts that hold the pump cover look, where the pump from... Setups thanks to many new product designs damaging or gouging the seal from tearing, well... Pump itself not me but i 'm about to get it out... a forum dedicated! And research on the pump body ( 201 ) pump with then pick the...

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