4l80e Reverse Servo Pin Length

- 4l80e Reverse Servo Pin LengthFrom case to lip of servo. 701H Universal Connector, 4 Pin Square can be Used in Place of 2 and 3 Pin Case Connector 70-82 1 TH400. For this "No Reverse" shift issue we are going to mechanically split the circuits by blocking the Low/Reverse band. 34912AC 4L80E Billet Reverse Servo Services 1997–up style assemblies with “hump” Overall, the 4L80E is a fairly heavy-duty transmission. STEEL BILLET ROLLERIZED CLUTCH HUB. Installed the Sonnax boost valve with pressure relief to prevent potential runaway pressures in reverse that could cause damage. 4L80E 97-UP Rear servo piston Will work for years 1997-UP 4L80E transmissions. Disassembly Disassemble OE low/reverse servo assembly. Teckpak Pin Extender for The Reverse Servo Pin on Th400/4l80e. Pressure seemed good, so I went and checked the servo pin clearance. The Novak Guide to the GM 4L80E Automatic Transmission. Automatic Transmission Servo Kits. 3 LS powered S-10, aka: The Blue Ghost. Step 12: Unbolt the low/reverse servo cover. 117 This Sub Kit can be used with any SF-99 Servo Bore Repair System Master kit, enabling it to be used to repair the above transmissions. Piston seals blow out as a result of too much piston travel. 99 ACDelco GM Original Equipment 24202582 Automatic Transmission Low and Reverse Band Servo Piston Pin $21. 030 to the tip and ground it a little and assembled it and it works. 200 after machining I put a slight crown. I've got a 1992 chevy 2500 4x4 6. 4L80E reverse servo pin measuring tool how to also works ">GM 4L80E reverse servo pin measuring tool how to also works. Install a longer servo pin. 250 I put it in the lathe and turned it down to size the total length increase was. The Sonnax Reverse Servo Spacer Kit is a simple, low cost way to add durability to the 4L80-E transmission and eliminates the need to retrofit early design reverse servo pistons into late units. Support The Channel:Affiliate Links (buy anything from ebay through one of these links and I'll a small percent of the sale):Ebay - https://rover. Description 4L80E Sonnax Reverse Servo Spacer Kit 1996 and Later. This weak link is prone to breakage while enduring the repetitive cycling that occurs in plow truck applications, when the boost valve has. Transmissions and Drivetrain - Where to get different length pins for servo? - The servo apply pin in my 2-4 servo assembly is too long, and it's preventing . Not that, the seal tore and leaked fluid pressure. In this video I demonstrate how to make a tool to measure the travel of the reverse servo on a GM 4L80/85 or TH400 auitomatic transmission. 14K subscribers Subscribe 20K views 4 years ago. Transtar Part Number: T34913 No more looking for longer servo pins for both early and late style of pins. OE pins have seven different lengths to allow for adjustment . 5 4L80E Rebuild ProceduresStep 10: Remove the case filter and checkballs from the case. A 4L80E servo assembly has all the parts needed to work on your unit, having pistons, gears, and even full assembly kits. 98 HERCOO GM 4L80-E Models Automatic Transmission Filter Kit $21. Doesnt have any solenoid's anymore, coverted to full manual. 2001 GMC 2500HD 4L80-E Reverse servo extension for a quick fix to get back on the road without pulling the transmission out and down. Pin Extender Reverse Servo 400/4L80E Transtar Part Number: T34913 No need for selective pins, use the extender and grind to size. Fits all TH400 and 1995-Earlier 4L80E. This Sonnax 34912-01K Adjustable Rear Servo Pin Kit for GM TH400 and 1995 and earlier 4L80-E transmissions has a pin length adjustment range that allows for Low/Reverse. 443 A C 4L80E (MT-1), 4L85E (MN8) 4 SPEED RWD (Electronic Control) Revision 06/2019. The Sonnax Reverse Servo Spacer Kit is a simple, low cost way to add durability to the 4L80-E transmission and eliminates the need to. 53 long which is also the same length as the 3L80 ( T-400) The wide band uses a pin 2. Flat Washer Belleville Spring Washer Short Spacer E-Clip Reverse Servo ©2022 Sonnax Transmission Company,. Has the trans been recently overhauled?The lo circuit for the band and or reverse is very basic. TECKPAK PIN EXTENDER FOR THE REVERSE SERVO PIN ON. 42 gear The trans shifts great in all forward gears, no codes, and locks up the torque converter as it should. After doing all that, reverse is actually a bit worse than before. Manufacturer drop ship; please email service@toolsource. Managed to get the reverse servo pin dialed in at. 80 which is what Jake recommends for faster leave on the trans brake. Discussion Starter · Oct 26, 2015. 00 Add to cart; YOKE, SONNAX T2-3-13131HP, Powerglide, Turbo 350, 700R4, 200-4R and 4L60E Transmission Slip yoke. 14K subscribers Subscribe 20K views 4 years ago 0. ID is as follows,from shortest to longest,1 ring,2 ring,3 ring and no ring. TURBO HYDRAMATIC 400 (3L80, M. It is a very simple procedure and can be done two different ways. Reverse Band Servo Piston Apply Pin Extender Kit For GM 4L80E ">Reverse Band Servo Piston Apply Pin Extender Kit For GM 4L80E. A worn drum in early 4L80-E low/reverse band and drum assemblies is easy to identify as the grooved lining in the band typically leaves marks along the surface of the drum (like railroad tracks). The 4L80 kit contains tooling necessary to repair the rear servo pin bore SF-99 Servo Bore Repair System Sub Kit, For use with General Motors THM 375, 400, 425, and 4L80E type transmissions Part No. Whatever It Takes Transmission Parts. Part No. Flat Washer Belleville Spring Washer Short Spacer E-Clip Reverse Servo ©2022 Sonnax Transmission Company, Inc. Sonnax Reverse Servo Spacer Kit. Enjoy! On Facebook at https://www. Sonnax Low/Reverse Servo Piston 34914-02 is a high-strength billet aluminum, direct-replacement upgrade servo piston to prevent failure in the 1996 and later GM 4L80-E transmissions Note: Replaces GM OEM part number 24202985 Specifications: Part Type Auto Trans Servo Piston Quantity Sold individually Servo Material Billet aluminum Servo Type. Proper pin length for rear band. 2001 GMC 2500HD 4L80-E Reverse servo extension for a quick fix to get back on the road without pulling the transmission out and down. Hi there!In this video I demonstrate how to make a tool to measure the travel of the reverse servo on a GM 4L80/85 or TH400 auitomatic transmission. If it doesn't, its a sure sign that the band is messed up. Managed to get the reverse servo pin dialed in at. it actually applys farther in 4th gear so that was the reason i had 4th and not 2nd i welded about. it probably has a worn lining and therefor the pin is bottoming out on the bottom of the servo bore before applying the band. Where to get different length pins for servo?. SPX/Bosch (OTC Rotunda Kent-Moore Miller) Brand. Description: Transmission Reverse Servo Pin Extender. With this kit, you will be able to give your servo system the maximum effort of output for your transmission. Adjustable Rear Servo Pin Kit. Sonnax 700R4 / 4L60E servo pin is longer than the longest OE pin. One of its lesser points is the cast aluminum reverse servo piston. It typically wears a smooth area around the full surface of the drum and is harder. What I noticed is if I turn the Tbrake on and off a couple of times and revving the engine, it seems to come back softly in reverse. SERVO EXTENDO PIN Fits: GM 400 & 4L80E Extend your servo pin length in seconds! Single Solenoids Bearing Charts; Repair Kits; Cooler Line Fittings; Tools; Pins & Stabilizers; All Other; Conversion Kits; All Other : SERVO EXTENDO PIN, GM 400 & 4L80E (Reverse) $8. With the pictured band and drum Pin length had the band start scraping the drum at this point, and engaging shortly after. 4l80e reverse servo pin length. What I noticed is if I turn the Tbrake on and off a couple of times and revving the engine, it seems to come back softly in reverse. Sonnax reverse servo spacer kit 34528-01K is a simple, low-cost way to add durability to the GM 4L80-E and 4L85-E transmissions and eliminates the need to retrofit early design reverse servo pistons into late units. Kent-Moore J-21370-10 Servo Gauge Pin. 34912-01K) that gives builders easy access to five of the seven pin options discontinued by GM. Sell on Amazon Shift Rite Transmissions replacement for 4L80E 97-UP SERVO PISTON REAR BAND APPLY PIN TH400 MT1 4L85E Shift Rite 4L80E Brand: Shift Rite 11 ratings Currently unavailable. Find ACDelco Automatic Transmission Servo Kits 4L80E Transmission Type and get Free Shipping on Orders Over $109 at Summit Racing! Auto Trans Band Servo Piston Pin. Step 11: Remove the Manual 2 brake band servo and spring, located directly in front of the low/reverse servo cover. Find ACDelco Automatic Transmission Servo Kits 4L80E Transmission Type and get Free Shipping on Orders Over $109 at Summit Racing! Auto Trans Band Servo Piston Pin. things you could have checked before rebuilding when losing reverse and third Solenoid "B" in the valve body. What's New; Forum Listing; 4l80e reverse servo adjustments and questions. This item: LOSTAR Transmission Reverse Band Servo Piston Apply Pin Extender Kit Fits GM TH-400 / 4L80E $19. Type: Transmission Reverse Servo Pin. Servo Pin, 700R4 / 4L60E Pin Kit, Extra Long Pin with …. This means, the clutch has burned and created excessive clutch clearance. 4L80E rebuild for 1100hp questions. 117 This Sub Kit can be used with any SF-99 Servo Bore Repair System Master kit, enabling it to be used to repair the above transmissions. When put in reverse it clunks like its engaging, then won't move, no sign of moving. Step 3: Split the Circuits "Mechanically". com">4l80e reverse servo pin length. The torn seal is the effect, not the cause of the burnt clutch. 04" after cover added and then removed to measure travel. The 4l80e transmission is nice to have in This time on SPPTV Rob works some more on his 7875 turbocharged junkyard 5. Reverse Servo Pin Tool and 4l80e Transmission Ramble Jam …. 4L80E Billet Reverse Servo. Decided to try the servo pin replacement myself to at least rule that out. it don't seem like much difference, but it is enough to reduce the apply pressure on the wide band with a short pin. things you could have checked before rebuilding when losing reverse and third Solenoid "B" in the valve body. SERVO EXTENDO PIN Fits: GM 400 & 4L80E Extend your servo pin length in seconds! Single Solenoids Bearing Charts; Repair Kits; Cooler Line Fittings; Tools; Pins &. Overall, the 4L80E is a fairly heavy-duty transmission. S, Supercharging and Turbocharging greatly increase failure rates. No more looking for longer servo. item 5 **REVERSE FIX**EXTENDO PIN** Servo Piston Pin Extender--Fits GM TH400 3L80 4L80E **REVERSE FIX**EXTENDO PIN** Servo Piston Pin Extender--Fits GM TH400 3L80 4L80E $16. 34912-01K) that gives builders easy access to five of the seven. Pin Extender Reverse Servo 400/4L80E Transtar Part Number: T34913 No need for selective pins, use the extender and grind to size. Estimated Ship Date: Jun 14, 2023 if ordered today. Also new for TH400 and '95-earlier 4L80-E applications is an adjustable servo pin kit (Part No. This Sonnax 34912-01K Adjustable Rear Servo Pin Kit for GM TH400 and 1995 and earlier 4L80-E transmissions has a pin length adjustment range that allows for . TECKPAK PIN EXTENDER FOR THE REVERSE SERVO PIN ON TH400/4L80E TRANSMISSIONS Transtar Part Number: T34913. 4L80E no codes, no reverse, all forward gears great!. Sonnax highlights adjustable rear servo pin kit. it was the servo apply pin. • A Marmon/Berkshire Hathaway Company 34528-01K-IN 06-02-22 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www. Installed the Sonnax reverse servo upgrade kit that increases the surface area of the pin seat on the piston to prevent piston cracking. Pin Extender Reverse Servo 400/4L80E Transtar Part Number: T34913. It should downshift and rev up. 2001 GMC 2500HD 4L80-E Reverse servo extension for a quick fix to get back on the road without pulling the transmission out and down. Pressure seemed good, so I went and checked the servo pin clearance. 4L80-E Extended Rear Band Servo Piston Rod fix For No Reverse or Slipping Reverse in GM Transmission WHAT THE FIX 9. TECKPAK PIN EXTENDER FOR THE REVERSE SERVO PIN ON TH400/4L80E TRANSMISSIONS Transtar Part Number: T34913. 12" band starts to drag on drum. 4L80E Reverse Servo Pin Fix How To + Boost Test Drive. ATSG 4L80E THM Transmission Repair Manual. The Sonnax Reverse Servo Spacer Kit is a simple, low cost way to add durability to the 4L80-E transmission and eliminates the need to retrofit early design reverse servo pistons into late units. Band Apply Pin Checking J-38737 U. 4L80E pin length differences are: narrow band uses a pin 2. Even with that, it felt like the band was starting to drag the drum, but I went with it anyway. Pin Extender Reverse Servo 400/4L80E Transtar Part Number: T34913. 34912-01K Fits all TH400 & '95-earlier 4L80-E. I've got a 1992 chevy 2500 4x4 6. Sonnax 700R4 / 4L60E servo pin is longer than the longest OE pin. Also new for TH400 and ’95-earlier 4L80-E applications is an adjustable servo pin kit (Part No. The 4L80 features a 310 mm torque converter. Fits all TH400 and ">4L80E TH400 Adjustable Rear Servo Pin Kit. OE pins have seven different lengths to allow for adjustment of the Low/Reverse band but are no longer available from GM. net">4L80E, Reverse Servo Spacer Kit. Band Apply Pin Checking J-38737 U. 006" added to rod length. Measured at point closest to output shaft. Starts getting hard to move at. Use to fix slipping or no reverse condition caused by moderately worn reverse band. No more looking for longer servo pins for both . 4L80E, Reverse Servo Spacer Kit. ACDelco GM Original Equipment 24202583 Automatic Transmission Low and Reverse Band Servo Piston Pin. burned out, no voltage, no signal from PCM, loose connection. You can test the reverse band by going out in the road, going about 25-30 MPH and then dropping it into 1st gear. Description 4L80E TH400 Adjustable Rear Servo Pin Kit. This item: LOSTAR Transmission Reverse Band Servo Piston Apply Pin Extender Kit Fits GM TH-400 / 4L80E $19. Pin Extender Reverse Servo 400/4L80E Transtar Part Number: T34913. 4L80E Billet reverse servo can't ">Adapt. I have the pan dropped and was working on removing the 6 bolts holding in the servo. This Sonnax 34912-01K Adjustable Rear Servo Pin Kit for GM TH400 and 1995 and earlier 4L80-E transmissions has a pin length adjustment range that allows for Low/Reverse servo piston travel, with an O-ring groove seal that keeps the line pressure from bypassing the case pin bore. 4l80e reverse servo pin length. ELE06 703H Late Speed Sensor(VSS) (For Electronic Speedo) 65-98 1 TH400. 385" drum removed, this is max available travel. Description 4L80E Sonnax Reverse Servo Spacer Kit 1996 and Later. ACDelco GM Original Equipment 24202582 Automatic Transmission Low and Reverse Band Servo Piston Pin. No need for selective pins, use the extender and grind to size. Adjustable Rear Servo Pin Kit GM TH400 and Breakdown of Included ItemsThis Sonnax 34912-01K Adjustable Rear Servo Pin Kit for GM TH400 and 1995 and earlier 4L80-E transmissions has a pin length adjustment range that allows for Low/Reverse servo piston travel, with an O-ring groove seal that keeps. Servo Pin Kit, 400/4L80E Rear (Adjustable)(4. I'm trying to adjust the servo pin to ensure reverse works OK. OE/OEM Part Number: Fits GM TH-400 4L80E. Engineered to be thicker than the original to combat the stresses of any side loading. Sonnax reverse servo spacer kit 34528-01K is a simple, low-cost way to add durability to the GM 4L80-E and 4L85-E transmissions and eliminates the need to retrofit early design reverse servo pistons into late units. 700R4 to TH400 Transmission Swap Kit; TH400 4L80E Transmission reverse band pin extender 1964-2008 Teckpak T31913 Competitors Price $8. TECKPAK PIN EXTENDER FOR THE REVERSE SERVO PIN ON TH400/4L80E TRANSMISSIONS. Decided to try the servo pin replacement myself to at least rule that out. No more looking for longer servo pins for both early and late style of pins. 4L80E Competition Components. The 4L80 kit contains tooling necessary to repair the rear servo pin bore SF-99 Servo Bore Repair System Sub Kit, For use with General Motors THM 375, 400, 425, and 4L80E type transmissions Part No. Line Pressure Booster Kit 4L80E-LB1. Pressure seemed good, so I went and checked the servo pin clearance. Sonnax Adjustable Rear Servo Pin Kits 34912. Packages Includes: 1 x Transmission Reverse Servo Pin Extender With. 110" travel, its's hard to move the output shaft. Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and '95-earlier 4L80-E servo pins. Find ACDelco Automatic Transmission Servo Kits 4L80E Transmission Type and get Free Shipping on Orders Over $109 at Summit Racing! Auto Trans Band Servo Piston Pin. The Sonnax pin kit has an adjustment range that covers the five longest OE pins to allow for accurate setting of the Low. The torque converter is a fluid turbine drive and like those on its predecessor transmissions; the TH350C, 700R4, and 4L60, the 4L80 features a lock-up pressure plate for direct mechanically coupled driving from the engine crank. Pin Extender Reverse Servo 400/4L80E Transtar Part Number: T34913. I went thru this a couple weeks ago on my 4L80, I Had no reverse and No Decel in Low, I took the servo out and get the pin off of the Piston and then on the end that points up I Took the rod to work and Tigged it up about. Rexnfx. Broken Low/Reverse servo piston; No Reverse; Other. YOKE, GM TH400, 4L80E, T3-3-5551HP $ 260. For this "No Reverse" shift issue we are going to mechanically split the circuits by blocking the Low/Reverse band. 210 and tig welded it to increase the length. The tool is not my design, just demonstrating how you. Transtar Part Number: T34913 No more looking for longer servo pins for both early and late style of pins. Check out rear servo pin weld on youtube. 210 and tig welded it to increase the length. One of these items ships sooner than the other. LOSTAR Transmission Reverse Band Servo Piston Apply Pin. & Pin Install rounded edge of flat washer towards piston. It clunks like its in, but 100% freewheels. Case Pieces and Reverse band setup on a GM 4L80e. 4L80E No 4th and No Reverse. The pin covers the five longest lengths for accurately setting Low/Reverse piston travel. Packages Includes: 1 x Transmission Reverse Servo Pin Extender With Cover Gasket. OE Part Numbers 8624140, 8627193, 8624141, 8627194, 8627195 Sonnax adjustable rear. ELE02 702G Rotor for Electronic VSS 65-98 1 TH400. 77787-02K Extra long pin with seals View Instructions Find a Distributor The servo pin in Sonnax servo pin kit 77787-02K is longer than the longest OE pin in GM 4L60, 4L60-E, 4L65-E and 4L70-E applications. This video highlights putting the miscellaneous pieces and the most important setting up of the reverse band pin. The 4L80 kit contains tooling necessary to repair the rear servo pin bore SF-99 Servo Bore Repair System Sub Kit, For use with General Motors THM 375, 400, 425, and 4L80E type transmissions Part No. A 4L80E servo assembly has all the parts needed to work on your unit, having pistons, gears, and even full assembly kits. Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and ’95-earlier 4L80-E servo pins. Kent-Moore J-21370-10 Servo Gauge Pin GM Automotive auto shop hand tools Applications:3L80 & HDWeight: 0. GM 4L80E reverse servo pin measuring tool how to also works. Sonnax highlights its adjustable rear servo pin kit, which allows users to replace servo pins in GM TH400 and '95–earlier 4L80-E transmissions. 66 Customers who viewed this item also viewed Page 1 of 1 Start over. Band Servo Pin Extensions; Cooling Line Fittings; Detent Cables; Standard Flywheel Shims; Trans Swap Kits. 443 A C 4L80E (MT-1), 4L85E (MN8) 4 SPEED RWD (Electronic Control) Revision 06/2019. As to length, this transmission is 26-1/4" long. It's not like GM doesn't sell those pins in several lengths, Do you have a 4l80e?. 45: SKU# T34913: SERVO EXTENDO PIN Fits: GM 400 & 4L80E Extend your servo. Servo Pin, 700R4 / 4L60E Pin Kit, Extra Long Pin with Seals, Sonnax. Estimated Ship Date: Apr 10, 2023 if ordered today. Use to fix slipping or no reverse condition caused by moderately worn reverse band. 4L80-E Extended Rear Band Servo Piston Rod fix For No Reverse or Slipping Reverse in GM Transmission WHAT THE FIX 9. 5 4L80E Rebuild ProceduresStep 10: Remove the case filter and checkballs from the case. Hi there!In this video I demonstrate how to make a tool to measure the travel of the reverse servo on a GM 4L80/85 or TH400 auitomatic transmission. Servo Bore Repair System, 375/400/425/274/4L80E Reverse (Contains: Servo Jig, 9/16" Guide, 5/8" Guide, 9/16" Reamer, 5/8" Reamer, 3 Sets of Bushings, Driver and Sizing Pin)(Northland. It still loosing reverse. J-38737 is designed to measure the rear brake band pin for proper length to ensure correct operation of the servo assembly. Check if this part fits your vehicle. SERVO EXTENDO PIN, GM 400 & 4L80E (Reverse) Back : $8. Fits all TH400 & '95-earlier 4L80-E. Inspect reverse piston for cracks and replace if necessary. 4L80E pin length differences are: narrow band uses a pin 2. Sonnax reverse servo spacer kit 34528-01K is a simple, low-cost way to add durability to the GM 4L80-E and 4L85-E transmissions and eliminates the need to retrofit early design reverse servo pistons into. Type: Transmission Reverse Servo Pin Extender. Extended reverse servo pin by only ~0. Description 4L80E Sonnax Reverse Servo Spacer Kit 1996 and Later. It still loosing reverse. Also new for TH400 and ’95-earlier 4L80-E applications is an adjustable servo pin kit (Part No. The smooth-lined band (used in the late 4L80-E) does not do this. All products are designed for perfect fitment, performance, and quality. Has the trans been recently overhauled?The lo circuit for the band and or reverse is very basic. This is not a permanent fix, but should get me through the. LOSTAR Transmission Reverse Band Servo Piston Apply Pin Extender Kit Fits GM TH-400 / 4L80E. No need for selective pins, use the extender and grind to size. 8624140, 8627193, 8624141, 8627194, 8627195 View Instructions Find a Distributor Sonnax adjustable rear. The pin extender allows you to customize your servo travel to specifications. 4th Accumulator Repair Kit 34805-01K. Fits GM TH-400 / 4L80E. Fitment Type: Direct Replacement. In this video I demonstrate how to make a tool to measure the travel of the reverse servo on a GM 4L80/85 or TH400 auitomatic transmission. Sonnax Low/Reverse Servo Piston 34914-02 is a high-strength billet aluminum, direct-replacement upgrade servo piston to prevent failure in the 1996 and later GM 4L80-E transmissions Note: Replaces GM OEM part number 24202985 Specifications: Part Type Auto Trans Servo Piston Quantity Sold individually Servo Material Billet aluminum Servo Type. so if you have 4th and your sevro sealing rings are fine chances are the pin length isnt right. With the pictured band and drum Pin length had the band start scraping the drum at this in this thread in this sub-forum in the entire site. Kent-Moore J-21370-10 Servo Gauge Pin GM Automotive auto shop hand tools Applications:3L80 & HDWeight: 0. Lube Regulated Pressure Regulator Valve 34200-14K. Transgo (4L80E-HD2) Transmission Reprogramming Kit, 4L80E Heavy Duty & Competition (Transgo), (1991-Up) $12366. As a result, the reverse clutch pressure builds up slowly, reducing the shift shock when there is a shift to REVERSE. This video highlights putting the miscellaneous pieces and the most important setting up of the reverse band pin. Heavy duty billet aluminum Upgrades one of the weaker points of the 4L80E, 4L85E, 4L90E. YOKE, GM TH400, 4L80E, T3-3-5551HP $ 260. Sounded pretty easy and I found a replacement servo for cheap from Monster. We don't know when or if this item will be back in stock. Servo Gauge Pin 3L80 & HD. Install a longer servo pin. Based on what I read all I had to do was drop the transmission pan and the servo pin was held in with 6 bolts. The Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and '95-earlier 4L80-E servo pins. Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and '95-earlier 4L80-E servo pins. Instructions GM 4L80-E, 4L85-E ShortSpring E-Clip & Pin Flat ReverseServo Washer Install rounded edge of flat washer towards piston. TH400 4L80E Transmission reverse band pin extender Teckpak …. OE pins have seven different lengths to allow for adjustment of the Low/Reverse band but are no longer available from GM. Pin Extender Reverse Servo 400/4L80E Transtar Part Number: T34913 No need for selective pins, use the extender and grind to size. Discussion Starter · Oct 26, 2015. Sonnax 34528-01K Transmission Rear Servo Spacer Kit 4L80E 96-18. Installed the Sonnax reverse servo upgrade kit that increases the surface area of the pin seat on the piston to prevent piston cracking. Hi there!In this video I demonstrate how to make a tool to measure the travel of the reverse servo on a GM 4L80/85 or TH400 auitomatic transmission. 701H Universal Connector, 4 Pin Square can be Used in Place of 2 and 3 Pin Case Connector 70-82 1 TH400. 4L80E no codes, no reverse, all forward gears great!">4L80E no codes, no reverse, all forward gears great!. The pin extender allows you to customize your servo travel to specifications. Note: requires J-21370-10 Gauge Pin for 4L80E. Line Pressure Booster Kit 4L80E-LB1. Find Automatic Transmission Servo Kits 4L80E Transmission Type and get Free Shipping on Orders Over $99 at Summit Racing! Use your Summit Racing SpeedCard today, and get 10% back - Get Details! Auto Trans Band Servo Piston Pin. Technical Bulletin Listing. The forward clutch hub of the GM4L80E has been known to break in competition applications or vehicles with over 1000 horsepower/1000 foot pounds of torque. The pin covers the five longest lengths for accurately setting Low/Reverse piston travel. 8624140, 8627193, 8624141, 8627194, 8627195 View Instructions Find a Distributor Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and '95-earlier 4L80-E servo pins. 28049 Views 22 Replies 6 Participants Last post by tgui9660, Nov 2, 2015. reverse clutch pressure. it was the servo apply pin. Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and '95-earlier 4L80-E servo pins. GM TH-400 / 4L80E Reverse Servo Pin Extendo Kit TeckPak Fitzall T34913 (99453)* $18. Adjustable Rear Servo Pin Kit GM TH400 and Breakdown of Included ItemsThis Sonnax 34912-01K Adjustable Rear Servo Pin Kit for GM TH400 and 1995 and earlier 4L80-E transmissions has a pin length adjustment range that allows for Low/Reverse servo piston travel, with an O-ring groove seal that keeps. 2001 GMC 2500HD 4L80-E Reverse servo extension for a quick fix to get back on the road without pulling the transmission out and down. Choose a language: ct ex. Buy Shift Rite Transmissions replacement for 4L80E 97-UP SERVO PISTON REAR BAND APPLY PIN TH400 MT1 4L85E Shift Rite. Due to a design change in 1996, the reverse servo piston commonly breaks because it is stressed more than early. The extra length simplifies adjustment, eliminating the need for adding length to the pin. This Sonnax adjustable rear servo pin kit replaces GM TH400 and '95-earlier 4L80-E servo pins. GM Genuine Parts 24202581 Automatic Transmission Low and Reverse …. Support The Channel:Affiliate Links (buy anything from ebay through one of these links and I'll a small percent of the sale):Ebay - https://rover. This item: 4L80E Billet Rreinforced Low Reverse Servo Piston 34912AC. The smooth-lined band (used in the late 4L80-E) does not do this. ACDelco GM Genuine Parts Automatic Transmission Servo Pistons 24223081 Automatic Transmission Servo Piston, 4L80, 4L85, Chevrolet, GMC, Kit Part Number: ADO-24223081. Helps cure: Engine surge at idle; Adjustable Rear Servo Pin Kit. 34912-01K Fits all TH400 & '95-earlier 4L80-E. 45: SKU# T34913: SERVO EXTENDO PIN Fits: GM 400 & 4L80E Extend your servo pin length in seconds! Quantity:. ACDelco Automatic Transmission Servo Kits. 200" travel so I welded to make it longer. Remove the cover, gasket, servo and return spring from the case. Also new for TH400 and ’95-earlier 4L80-E applications is an adjustable servo pin kit (Part No. Transtar Part Number: T34913 No more looking for longer servo pins for both early and late style of pins. Has the trans been recently overhauled?The lo circuit for the band and or reverse is very basic. Description: Transmission Reverse Servo Pin Extender. Advanced Search Cancel Login / Join. ELE05 NI Third Gear Pressure Switch. Managed to get the reverse servo pin dialed in at. A worn drum in early 4L80-E low/reverse band and drum assemblies is easy to identify as the grooved lining in the band typically leaves marks along the surface of the drum (like railroad tracks). Reverse Band Servo Piston Apply Pin Extender Kit For GM 4L80E TH. The extra length simplifies adjustment, eliminating the need for adding length to the pin. it probably has a worn lining and therefor the pin is bottoming out on the bottom of the servo bore before applying the band. To do this, we will have to have the oil pan removed. How to fix No Reverse in GM 4L80. BLUE GREEN Outer Length 4. Do I need to check the pin length needed? why I ask is because when I bolt down the cover on the rear servo, it engages the rear band. Applications: 4L80E, Medium Duty Truck. OE pins have seven different lengths to allow for . NOTE: Do NOT reuse a cracked piston. & Pin Install rounded edge of flat washer towards piston. ACDelco GM Original Equipment 8675728 Automatic Transmission Low …. The Sonnax pin kit has an adjustment . I've had it with Hughes Transmissions. This video highlights putting the miscellaneous pieces and the most important setting up of the reverse band pin. TECKPAK PIN EXTENDER FOR THE REVERSE SERVO PIN ON TH400/4L80E. OE/OEM Part Number: Fits GM TH-400 4L80E. Helps cure: Engine surge at idle; Adjustable Rear Servo Pin Kit 34912-01K. Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and ’95-earlier 4L80-E servo pins. Services 1997–up style assemblies with “hump”.