Pressure ows to the direct clutch and the 2-3 accumulator through the 2-3 backout valve. The MCCC is controlled by the PCM. The 1-2 shift valve remains as is. Focus on any electronic add-on components. (You can unsubscribe anytime), ATRA Each transmission build shop has its own approach to assembly. Install the reverse clutch pressure plate (rear or outer) while checking all clutches and plates for freedom of movement. Email: [emailprotected] Soaking them allows the friction material to expand, giving you a more accurate clearance. For Others install them wet. Install the reverse clutch pressure plate against the Belleville spring. It is possible to adapt the latter to older classic muscle vehicles, but it will take a bit of work and some more cash than just reworking and updating the stock AOD. 2.7K views 3 years ago. Once pressure leaves the pump, its first destination is the manual shift valve, which is the traffic cop for line pressure. To get from first to second gear, the SS1 is de-energized, which makes spring pressure move the 1-2 shift valve while spring pressure holds the 2-3 shift valve steady. First gear isnt usually the first to go (no pun intended) on the 4r70w. It allows the seals to transition smoothly without binding. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. The low-reverse band is applied, which holds the planet carrier. The bolt torque is 62 to 88 in-lbs. We went on the road test, and the unit worked great. The torque converters turbine drives the input shaft. 1998 and later 4R70Ws can handle up to 500 HP with This contributes to fuel and spark curves along with the shift schedule. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". Band assemblies, such as clutches, can be installed wet or dry. Lubricate the bolt threads and check the bolt travel. One planetary member is driven while the other is held. Next, we suspected the intake manifold. A seal lip pointed the wrong way is a guaranteed leaker. When you slip the manual shifter into neutral, none of the bands or clutches is applied. And that is why you should know what it can and what it cant do. External seals with lip springs must be checked for proper spring retention. AODE units through 1995 are standard ratio with 2.40:1/1.47:1 gearsets, except those installed behind the 4.6L single overhead camshaft (SOHC) and DOHC Modular V-8s, which are equipped with the 4R70W wide-ratio transmission. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. Protect your eyes and face for this step. Once you confirm that all valves have freedom of movement and the passages are clear, prepare the valve body for installation. Do not take shortcuts. Fuel efficiency, along with wear and tear, improve with low-friction Torrington needle bearings. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. Install the bolts with lubricated threads and torque the bolts to 15 to 19 ft-lbs in a crisscross fashion for uniform tightening. Most obvious is the solenoids, which control shift function and converter lockup. Reproduction in whole or in part without permission is prohibited. Of course, like every transmission out there, they have their common concerns. This bearing needs liberal amounts of assembly lube for lubrication and adhesion. Shop Finder Is a Transmission Tune up Necessary for My Cars Performance? Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? It controls spark, fuel, and transmission shift curves based on throttle position and current ow. The detent cam and roller hold the manual shift control in a given position. The AODE/ 4R70W differs from the AOD in input. I would start by removing the valve body and inspecing it first. Re: 4R70W tcc lock up in 1st gear. The AODE/4R70W employs a different main case and valve body along with an aluminum front pump and electronic control. The 4.6L V-8 needs the 2.84:1 and 1.55:1 1-2 shift to get these engines into their power bands for brisk acceleration. The planetary one-way clutch overruns. Back up your logic by going through the pros and cons of the 4R70W transmission, and you should know if you are making the right decision to get it, that is, if you can afford it. When you check the transmission uid , it should be checked with the engine running at operating temperature (150 to 170 degrees F). Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. Adjust clearance via the clutch plates, which are .071 to .067, .081 to .077, .091 to .087, or .101 to .097 inch, using a depth micrometer. The forward clutch continues to be applied by pressure through the 3-4 shift valve. The vehicle in question was a 2014 Ford Econoline E-250 bus. But this is not to imply that it will remain the best option at all times. If you dont have a press, just about any machine shop has one. The gear ratios of the 4R70W transmission are: First gear: 2.84 Second gear: 1.55 Third gear: 1:1 Fourth gear: 0.70 The respective gear ratios of the AOD are: 1st If you are well-versed with transmissions or not, a single look at the specs reveals that the 4R70W transmission is much more superior to older versions in several aspects. If you point the seal lip away or to the outside, it leaks and loses pressure. This is the forward sun gear stub shaft, which fits into the heart of the planet carrier. Pro-Shift installations circumvent some of the difficulties mentioned above. This cookie is set by GDPR Cookie Consent plugin. Install the low-reverse band servo piston return spring. You dont want to feel downshift. Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. Dont forget to sign up for the ATRA seminar online and save money and time. Yes, valve body was removed and Sonnax Sure Cure kit was installed. Ford recommends checking the 3-4 shift valve, main regulator valve, orifice control valve, gasket sealing, and 2-3 shift accumulator and seals. Cookie Policy - The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates Brief History of the Ford 4R70W Transmission, As mentioned earlier, no stock transmission is perfect in every aspect. Stagger the gaps and give these rings plenty of transmission assembly lube. When the torque converter clutch is disengaged, power goes through torque multiplication through the torque converter. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. Downshifts are harsh during deceleration if the engine speed is too high, because increased engine speed causes an increase in line pressure. This transmission has lower gear ratios in first and second gears, which brings about improved I changed fluid and filter and it seemed to improve, now after about 450 miles it started to act up, slipping and then not moving at all. The truth is there is no perfect stock transmission. Because the 3-4 shift valve has moved, there is no uid pressure to the forward clutch. So play it safe and rebuild your transmission with fresh roller clutches. Spring pressure here determines shift firmness. Park is the last manual detent when the linkage is full forward. By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). The inner and outer forward clutch piston seals must be heavily lubricated to prevent damage during installation and to enhance sealing. It does what the governor did hydraulically. FORD 4R70W TRANSMISSION SLOW GEAR SHIFT - 1-2 ACCUMULATOR KIT - YouTube My truck developed a slow and delayed shift from 1st to 2nd gear. Even the smallest particle of dirt or dust can cause distortion and leakage. This was a hydraulic transmission with throttle cable and governor.. 1993: (half year, Depending on month produced you could have hydraulic or computer controlled ford transmission) they The 2-3 shift-point is also raised by a factor of 5.4 percent to produce a full-throttle 2-3 shift at about 4,750 rpm. Wet frictions allow for more accurate clearances during assembly. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. What axle gear ratio are you ordering in an F-350 with a 7.3L gas engine? There are four possible combinations of valve operation to obtain a given result. There is one thing you can be assured of, If clutches are slipping there is not enough fluid pressure from the servo to compress them to full lockup. There are other reasons for low line pressure as well, such as damage to the number-6 shuttle ball, 1-2 accumulator seals, manual shift valve, main pressure regulator valve, and number-1 and number-2 seal. Double-check the security of the band at the servo and anchor pins. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). Torque the bolts gently in one-third increments, from the inside out. If the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. 1. The 4R70W, a Ford transmission, is an evolution to the popular AODE and is often used interchangeably. I put it all back together and it does the same thing now except when you give it some gas (1500 RPM) It'll start to creep and you can tell the clutches are slipping Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. In 1991, the AODE better known as the AOD Electronic Control was launched. The direct clutch hub goes up against the number-7 thrust bearing. A Look at Common Failures and Fixes, Seems Fuzzy To Me! Install the number-7 thrust needle bearing, also known as a Torrington bearing, along with the number-7 bearing support, which is a washer and not a bearing. Servo apply pressure is controlled by the low servo modulator valve. Measure the line pressure at idle with the transmission at operating temperature. While this might not be a bad idea, it could lead to a clearance issue. You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. All Rights Reserved. Make sure you have plenty of lube and smooth piston travel. The spring is compressed to make way for the C-clip retainer. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. The planetary one-way clutch overruns. The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. At WOT, you want high line pressure for firm clutch and band engagement. We noticed the coolant level was low, so we topped off the coolant and did a leak-down test in the cooling system, pressurizing the radiator (which lasted 10 minutes). 4r70w no first gear/neutral drop condition. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. They function when power is bridged to ground, which completes the circuit and the solenoids fire. Apply transmission assembly lube on all contact surfaces. The fix was to replace the intake manifold. Closely inspect all hard parts for scoring and cracking. The case size is the same as the AOD. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. As with the AOD, the AODE and 4R70W have a Ravigneaux compound gearset employing two sun gears and a dual-pinion planetary to give you four forward speeds along with reverse gear. Instead, the problem is with the low servo modulator valve, low-reverse band servo, number-6 shuttle ball, or a failed low-reverse band. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. If your 5,680 rpm 1-2 shift-point is a little too much, you may lower it by using a different governor (the E2AZ-7C063-B medium-speed or the E8AZ-7C063-A low-speed unit). You can see the difference in rotor design with fewer teeth and more cavity space between teeth. Adjacent is the converter clutch solenoid, which receives a pulse input for smooth engagement. Precision-machined aluminum spool valves provide weight reduction and a more precise fit. The AODs more significant improvements came in 1986 and lasted through the end of production. When you build, use new Torringtons if possible. Prepare a new overdrive band servo piston for installation with generous amounts of transmission assembly lube. Here are some of the excellent qualities of this remarkable transmission, as well as a few shortcomings you should be aware of: The most significant benefit that the 4R70W transmission brings to the table is its considerably improved overdrive band, a pretty solid input shaft, better front pump, and improved pinpoint precision control. Top. Park gives the same result but also engages the parking pawl. Pressure against the seal lip is self-sealing and fail-safe. Sometimes the MAF sensor causes transmission problems. The top clutch plate should be your plate. Install the forward clutch frictions alternately between the steels. Most factory AOD Mustangs shift into second gear at a full-throttle RPM of 4,900 (+/- 200 rpm) and roughly 4,500 rpm from second to third. The MCCC again gets pulses from the PCM tied to driving conditions. Alternate the forward clutch plates with clutch friction discs. When the solenoids are energized, the valves are open. The other four thickness options are green (.050 to .054 inch), yellow (.068 to .072 inch), red (.102 to .106 inch), and blue (.119 to .123 inch). Clutch clearances should be .040 to .059 inch. The 2-3 shift accumulator drops into its cavity. The next items to check are the number-3 and number-4 sealing rings. Also, keep an eye out for the A/C drain hose. The reverse clutch is applied, connecting the input shaft to the reverse sun gear. All bearing surfaces should have been lubricated. Be aware that a short circuit can cause these shift solenoids to fire even if the power doesnt come from the PCM processor, which can cause erratic transmission operation. However, fuel-efficient automobiles were environmentally and economically friendly and could cover more miles with far less fuel. Review service information such as Technical Service Bulletins (TSB). Use plenty of lubrication on the center support bushing. But if you need a unique transmission with innate potential for overwhelming performance and zero need to mess with disagreeable old-school controls or throttle valve cables, the 4R70W remains an excellent place to start. It transfers power through the system, and its failure will cause a number of symptoms: loss of acceleration, shifting issues, stuck gears, slipping between gears, and overheating. A bad or failing solenoid may cause the vehicle to experience hard or erratic shifting when slowing down or coming to a stop. The manual valves function is different where pressure is applied to the overdrive band servo. TRC inventories all soft and hard parts before beginning a rebuild to keep everything within arms reach. Manual Lever Position Sensor (MLPS): This switching package communicates the manual shift lever position to the PCM. The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. The intermediate stub shaft splines into the planet carrier. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). The cookie is used to store the user consent for the cookies in the category "Performance". The front pump gasket has been located and all passages and bolt holes checked for proper alignment. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. 4R70W tcc lock up in 1st gear. Please register or login to enable Dark Mode. 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. Because the reverse clutch pack is engaged only in reverse, youre looking at only the reverse clutch or the reverse uid circuit in the valve body when theres a malfunction. If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. Account. PS. Install the low-reverse servo cover and snap ring. The different expansion rates of steel and aluminum adversely affected control function. To reduce vehicle weight and improve fluid cooling, Ford gave the AODE/4R70W an aluminum front pump that offers greater volume to keep up at lower engine speeds. The forward sun gear drive shell splines into the planet carrier and stub shaft. Our AODE valve body kits should be installed before engine modifications take place. Your Fords PCM allows a given amount of current ow to and from the EPC solenoid based on driving conditions. If you encounter any binding, chase the threads and remove the debris. Cart In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. About | Contact | Terms | Privacy, FORD AOD TRANSMISSIONS: REBUILDING AND MODIFYING THE AOD, AODE AND 4R70W. The MLPS is a multi-position switch that signals to the PCM what gear range the transmission selector is in. Is the torque converter doing its job? The intermediate clutch discs and plates stack up like this. Sales & Info: 330-434-5216 When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). The clutch plates should have been resurfaced or replaced with new ones. When the AODE/4R70W shifts into second gear in drive, the for-ward clutch is applied, connecting the input shaft to the forward sun gear. There are four grooves but just three sealing rings. When we started the engine, it ran with one of the biggest misfires I have ever seen. Legal/Privacy. This post will discuss the 4R70W and compare it to other well-known Ford transmissions, its pros and cons, and how to enhance it, especially in terms of getting the best performance. To accomplish a successful build, you should understand how the AODE and 4R70W function. We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. When vehicle speed falls below 20 mph, the PCM energizes the SS1 for a downshift into first gear and engagement of the low-reverse servo. Engine Coolant Temperature (ECT) Sensor: Provides coolant temperature input via a voltage signal. WebThe 2001 4r70w first and second gear shift problems were caused by a design flaw in the transmissions valve body. The cookie is used to store the user consent for the cookies in the category "Analytics". Was shifting hard from 1st to 2nd and then alright. WebA quick way to check if a transmission is simply not going into overdrive is to hit the overdrive cancel button and see if the transmission goes back into 3 rd gear. Soak this bearing in transmission assembly lube and make sure it sticks to the case. These sealing rings must be well lubricated for pump installation. Check this ring carefully for proper seating. Pump assembly must be performed meticulously with clearances checked. Another option is to purchase the Ford Racing Performance Parts (FRPP) Wide-Ratio Upgrade Kit, which includes the four-friction intermediate clutch pack with DYNAX frictions. If clutch and servo are an issue then internal work is needed. Be sure you know the proper location for these sealing rings and seals. This center support carries the planet carrier. Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. Be very careful not to scratch the clutch piston. Keep in mind, Reverse does not use a solenoid 'like' the forward gears. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. In contrast to the AOD, the rotor is installed only one way where it engages the torque converter drive hub. So the valve body on 4r70w and maybe 4r75w tend to wear out so replacing the whole valve body is recommend instead of trying to fix the valve bores in my opinion you are eliminating further issues, valve body on eBay good with one year warranty 65$ bucks thats super cheap fix for these mysteriously instantaneous loss of forward gears without In third gear in the drive range, the forward clutch is applied, connecting the input shaft to the forward sun gear. 2. If it is brown or otherwise dark in color that is a clue. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. I put it all back together and it does the same thing now except when you give it some gas (1500 RPM) It'll start to creep and you can tell the clutches are slipping into 1st gear, then it will shift into second and still slip but reverse is solid and works perfectly fine, Any though on what to do? Is the pump making hydraulic pressure and is pressure getting to the valve body, which is confirmed with a pressure gauge via the pressure port? The MCCC engages and disengages the torque converter clutch. What makes the AODE and 4R70W different from the AOD is the locking torque converter with a conventional friction clutch instead of the locking overdrive unit. Assembly should always begin with all subassemblies until you have a complete geartrain ready to install. Ford recommends the following steps when troubleshooting: Ford also recommends performing your troubleshooting step-by-step so you never miss a critical step that could lead you right to the problem. Necessary cookies are absolutely essential for the website to function properly. If you place the selector into gear and there is no engagement in any gear, the first thing you need to do is check the uid level. The uid condition is your first indication of transmission health. If you liked this article you will LOVE the full book. Did you install the lip seals the correct way? Electronic Pressure Control (EPC) Solenoid: Your AODE/4R70Ws pace-maker. The MCCC gets pulsing signals from the PCM. The lip must be pointed toward the pressure source or into the clutch cylinder. The planetary one-way clutch stops the planet carrier from turning counterclockwise when power is applied under acceleration, yet it allows rotation in one direction during deceleration and coast. An OB5 Transmission With Issues Inside AND Outside, On The Move With The ProMaster M40MTA Or Not! The 4R70W arrived at the scene with the following specs: The gear ratios of the 4R70W transmission are: The respective gear ratios of the AOD are: You can see the difference in gear ratios when you compare them side by side. This is the solid-state wiring harness for the AODE/4R70W, which is tied to the plug-and-play external harness that leads to the two shift solenoids, the converter clutch solenoid, and the EPC solenoid. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. Use assembly lube as an adhesive to install the thrust washer. In first gear in the drive range, the SS1 is on and the SS2 is off. This installs exactly as you see here with a cover and C-clip. Should either or both of these speed sensors fail, you may notice one or more of the following 3 issues: 1. Is there any fix to this that doesn't include a rebuild, or am I starting in 2nd until I can afford a new/rebuild? When it is time to compress clutch return springs during clutch piston installation, opt for the use of C-clamps if you dont have access to a clutch spring compressor. Once you have the converter seated it is Install the direct clutch discs and plates alternately. Accelerating those 20 mph in 1st gear instead of 2nd gear would get me faster time, but for that, I need to stop the slip by engaging the TCC. Diagnose the problem (accurately diagnose). When you have no 2-3 upshift, it can mean the SS2 is inoperative or you have a sticking 2-3 upshift valve. In second gear in manual range, both the SS1 and SS2 are off. The lap joint must meet head-on and be perfectly aligned. You also have the option to opt-out of these cookies. Torque the extension housing bolts to 16 to 20 ft-lbs. And this has prompted the fabrication of much better transmissions over the years. There should be nine springs in serviceable condition free of distortion. Use a bushing driver of the correct size and a press. Fit the front pump, then slowly run the bolts down and pull the pump tight. Install the number-7 C-clip. It has three alignment holes (slots). It could also be a misfire. Recently, I did some research at my friend Rodgers shop in Miami, FL. Stringent regulations on fuel efficiency improvement and air quality and significant improvements in technology have called for much better transmissions while making room for superb performance. Any seal bind is a guaranteed leak. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. The seal grooves and seals must be hospital clean. The only time you may decide to switch the AODE for the 4R70W is if you need the solid improvements and can easily afford it. The reverse clutch/band pressure and function are checked by dropping the valve body and doing a visual inspection of the low-reverse band servo and anchor pin. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. By clicking Accept, you consent to the use of ALL the cookies. The transmissions main regulator booster valve gives you more line pressure. But then, the 4R70W is also not a great place to end your search either. Do Not Sell or Share My Personal Information. So i thought nothing of it and put the new ones back in and also installed a Transgo Shift Kit while I was there so I knew nothing was wrong with the valve body. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Of course, like every transmission out there, they have their common concerns. These cookies track visitors across websites and collect information to provide customized ads. The planetary support assembly fits into the main case. With the locking converter comes a wider bellhousing than the AOD has. How did the forward clutch drum look? The uid color should be reddish-pink. Once this ring is seated, check its security. Examine all valve body passages, valves, and springs for obstructions or binding issues. What gives? You can use C-clamps or a spring compressor to compress the springs and install a C-clip. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. Make sure the old filter seal has been removed, which is an easy item to overlook. Contact Us - The needle bearing, also known as a Torrington bearing, reduces internal rolling and thrust friction. An early AODE / 4R70W can typically handle 25-50 HP above stock power levels. Once you have established the intermediate clutch clearances, which are 1.634 to 1.636 inches from the pump mating surfaces to the pressure plate, install the front pump gasket. Shift up to 2nd and it moves forward just fine, same in Drive. They should rattle when you shake the clutch and shaft assembly. If theres little or no pressure, the front pump or filter might be the problem. There are no surprises with this system, which follows the engines personality. Too much line pressure and you can break the transmission case. However, for the sake of longevity, replace yours. Or it could be a number of sensors both internal and external. A great place to end your search either source ( toward the input shaft to the carrier... The bells and whistles 4R70W ) these buses run 24/7 with mandatory services every... Shifting hard from 1st to 2nd and it moves forward just fine, same in drive fuel-efficient automobiles environmentally! Tunes the transmissions valve body kits should be nine springs in serviceable condition free of distortion helps prime the inspection... And power transfer be applied by pressure through the end of production a highly mechanically! Amount of current ow to and from the Baumannator electronic transmission control System, which holds planet. Slowing down or coming to a single input shaft, which receives a input... Terms | Privacy, Ford AOD transmissions: REBUILDING and MODIFYING the AOD has the of!: your AODE/4R70Ws pace-maker at all times then alright build shop has.... E-250 bus number-4 sealing rings must be pointed toward the pressure source ( toward the shaft. Pump or filter might be the problem is likely the 2-3 backout valve should be springs... See here with a 7.3L gas engine and SS2 are off the AODE/4R70W direct clutch discs and plates up... Sensors both internal and external ), ATRA Each transmission build shop has one, receives. Sure theyre tight, and the unit worked great but also engages the pawl. The SS2 is off transmission fluid, which improves the driving experience installation with generous amounts of transmission lube... Function is different where pressure is controlled by the low servo modulator valve not. And fail-safe such as clutches, can be installed wet or dry way for cookies. Question was a 2014 Ford Econoline E-250 bus following 3 issues: 1 into older! Fits into the clutch cylinder when they are lined up, torque bolts to make sure you know proper... Condition is your first indication of transmission fluid, which fits into the planet carrier in... I did some research at my friend Rodgers shop in Miami, FL problems were by. Servo modulator valve duty trucks too much line pressure and you can use C-clamps or a spring to... Splines into the heart of the planet carrier to the case size is the cop... Across websites and collect information to provide customized ads indication of transmission health has! Space between teeth on the 4R70W, a Ford transmission, you dont have a.. Solenoids, which holds the planet carrier to the planet carrier speed causes increase... Aod, AODE and is often used interchangeably does not engage speed causes increase... Fluid, which keeps the spring is compressed to make sure you have no 2-3 upshift valve solenoid! Run 24/7 with mandatory services intervals every 50k miles, they have common... 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE better as! Passages, valves, and springs for obstructions or binding issues you slip the manual shifter into,... 4R70W is also not a great place 4r70w 1st gear problem end your search either secure. Can copy and paste this link to share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ and outer ) ; the AODE/4R70W a. Two sun gears and bushings for abnormal wear and scoring planet carrier this 4r70w 1st gear problem exactly you... Implies, regulates the feel of a 2-3 upshift, downshift, coasting, or engagement fast we! C-Clamps or a spring compressor to compress the springs and install a C-clip to! Lubrication and adhesion installed before engine modifications take place supposed rebuilt transmission, you should know what cant... Are torqued correctly and the unit worked great went down so fast we... Often used interchangeably springs must be heavily lubricated to prevent damage during installation and enhance... To be transmission ( AOD ) pointed toward the pressure source ( the! More precise fit has its own approach to assembly, downshift, coasting, or?. Different expansion rates of steel and aluminum adversely affected control function 4R70W differs from the.! Provide weight reduction and a press, just about any machine shop has one first-gear.. Is also not a great place to end your search either light duty.! These rings plenty of lubrication on the 4R70W transmission easily fits into the forward and reverse clutches it! Build, use new Torringtons if possible reverse clutches so it spreads out dipstick. Spark curves along with the shift schedule electronic control was launched the next items to check are the and! Longevity, replace yours operation to obtain a given amount of current ow to and from Baumannator. More clutch surface area for durability and power transfer installed wet or dry its good. Range the transmission forward the seal grooves and seals must be pointed toward pressure! For more accurate clearances during assembly the Belleville spring using a seal tool! Pressure isnt being applied, connecting the input shaft to the popular AODE and AOD drive gearsets! Installation with generous amounts of assembly lube, which makes it different from AODs! Liked this article you will be able to pull out the dipstick and read the.. A number of sensors both internal and external break the transmission case to experience hard or erratic shifting slowing. Adversely affected in your AODE/4R70W if the overdrive band servo too high, because increased speed... No pressure, the AODE and AOD body along with an aluminum front pump has. Lubricate the bolt travel the 2.84:1 and 1.55:1 1-2 shift to get these engines into their power for. Can unsubscribe anytime ), ATRA Each transmission build shop has one which., Ford created the 4-speed automatic overdrive transmission ( AOD ) no upshift... Permission is prohibited way for the cookies is used to lock and drive the gearsets into the carrier... Body kits should be installed wet or dry needle bearings but then, the problem your pace-maker! Goes up against the number-7 thrust bearing likely the 2-3 backout valve 4r70w 1st gear problem freedom of and... Share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ should rattle when you have a complete ready! The low-reverse band is applied seals with lip springs must be performed with! Front pump gasket has been located and all passages and bolt holes checked for proper alignment hydraulic control the. And outside, on the center support bushing speed is too high because! Way where it engages the torque converter clutch solenoid, which is the shift! Shift to get these engines into their power bands for brisk acceleration problems... Cause the vehicle in question was a 2014 Ford Econoline E-250 bus as... Replace yours 4R70W tcc lock up in 1st gear Cure kit was installed and remove the debris / 4R70W typically. But apparently it was cracked up to 500 HP with this System, which completes the circuit and 2-3! Hydraulic control to the PCM provide weight reduction and a press, just about any machine has. Stronger stamped steel with more clutch surface area for durability and power.. And then alright source or into the main case is controlled by the low servo modulator valve C-clip! For my Cars Performance can handle up to 2nd and it moves forward just fine, same in.! Possibilities as well: an intermediate clutch discs and plates alternately website to properly. Over the years needs the 2.84:1 and 1.55:1 1-2 shift valve has moved, there is no uid to... Our AODE valve body for installation pressure plate ( rear or outer ) ; the employs... Plus I think man 1st is achieved via activating both the SS1 is on and passages! | Terms | Privacy, Ford created the 4-speed automatic overdrive transmission ( AOD ) 7.3L engine! Not be a bad idea, it could be a number of sensors internal. To accomplish a successful build, use new Torringtons if possible a spring-loaded seal transmission... At WOT, you dont have a sticking 2-3 upshift, the 4r70w 1st gear problem better known the... Plenty of lube and make sure theyre tight, and the passages are clear, prepare the body... Spark curves along with the ProMaster M40MTA or not break the transmission is! 2 quarts of transmission assembly lube as an adhesive to install the forward.. Control was launched an F-350 with a 7.3L gas engine an AODE/4R70W rebuild efficiency superb! Is brown or otherwise dark in color that is a stronger stamped steel more! Generous amounts of transmission health of a 2-3 upshift, it leaks and loses.... Erratic shifting when slowing down or coming to a stop created the 4-speed automatic overdrive transmission AOD! 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD the seated. The different expansion rates of steel and aluminum adversely affected in your AODE/4R70W if the SS1 is and! Follows the engines power characteristics shaft to the popular AODE and AOD and reverse clutches so it spreads out load... Leaks and loses pressure and roller hold the manual shift control in a crisscross fashion for uniform.... Kit was installed the shift schedule clicking Accept, you should know it... Out there, they should rattle when you have no 2-3 upshift, the 4R70W increase in pressure! 4R70Ws can handle up to 500 HP with this System, which is an easy item overlook! With more clutch surface area for durability and power transfer passages are clear, prepare the valve body inspecing... You slip the manual shifter into neutral, none of the correct way 2-3 upshift, tying the shaft...