A lone sealing ring (PN 87054-S96) goes in the top groove. 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. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. The AOD full-throttle shift-point with the Motorsport wide-ratio gear-set is different. Analytical cookies are used to understand how visitors interact with the website. Always replace the manual shift shaft seal while you have the transmission apart. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. Pressure all by itself doesnt move the 3-4 upshift valve. The Fora platform includes forum software by XenForo. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. The top clutch plate should be your plate. Vehicle Speed Sensor (VSS): A magnetic pickup (Hall Effect) that works with the OSS to fine-tune transmission function. When they work properly, the 4R70W and 4R75W is a reliable transmission. The forward clutch hub splines into the reverse clutch drums clutch frictions. Powertrain Expo Nevertheless, both transmissions are interchangeable. As in drive range, the forward clutch is applied, tying the input shaft to the forward sun gear. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. 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. WebThe 2001 4r70w first and second gear shift problems were caused by a design flaw in the transmissions valve body. Archive - Of course, like every transmission out there, they have their common concerns. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. Not enough line pressure and you get slippage. No 1st Gear Been having issues with the truck accelerating slowly. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. 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. Use plenty of lubrication on the center support bushing. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. Although these torque values are very low, you still need to torque in increments. Both shift solenoids, SS1 and SS2, are on/off function and packaged together. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. Inspect the intermediate clutch pressure plate for spring integrity and inventory. If you were noticing less The cookie is used to store the user consent for the cookies in the category "Analytics". In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). 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. 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. Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. Begin your troubleshooting with electronics, then mechanicals. Instead, the problem is with the low servo modulator valve, low-reverse band servo, number-6 shuttle ball, or a failed low-reverse band. 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. If the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. All others 50-75 psi. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. It is unknown how many cycles a Belleville spring can take before it breaks. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. Once pressure leaves the pump, its first destination is the manual shift valve, which is the traffic cop for line pressure. And for this to happen successfully, the manufacturers had to sacrifice a handful of the speed and performance features that older models exhibited. Copyright 2006-2020 GEARS Magazine. According to ASTG all your line pressures are fine. Even the smallest particle of dirt or dust can cause distortion and leakage. Install the bolts with lubricated threads and torque the bolts to 15 to 19 ft-lbs in a crisscross fashion for uniform tightening. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. Torque the bolts in a strict pattern to prevent warping. The same thing applies to automobiles with the AOD Electronic Controls in the 1990s. 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. What Are the Different Types of Transmission Fluids? The seal grooves and seals must be hospital clean. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. The MCCC is off. The number-5 needle bearing is already installed here. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. Did it come on all at once or did it arrive gradually? If theres little or no pressure, the front pump or filter might be the problem. Change Your Address, Yes, I would like to receive emails from Gears Magazine. 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. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. The next items to check are the number-3 and number-4 sealing rings. 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. Check for proper spring alignment and positioning. Examine the check ball valves for freedom of movement. Alternate the forward clutch plates with clutch friction discs. Each transmission build shop has its own approach to assembly. Parts: 330-434-0104 Reproduction in whole or in part without permission is prohibited. The reverse clutch discs alternate with plates. The needle bearing, also known as a Torrington bearing, reduces internal rolling and thrust friction. Yet another issue could be the low-reverse one-way clutch. The truth is there is no perfect stock transmission. This bearing needs liberal amounts of assembly lube for lubrication and adhesion. But if you need a unique transmission with innate potential for, 16-Speed: More Gears Than You Can Shake Three Sticks At, 2011 Chevy Silverado Project Blue Bomber Finale, A High-Performance Trans for Supercharged V-8s, A New Transmission for the ol Sedan Delivery. Use plenty of lubrication as a pre-lube and for adhesion. Under acceleration, power passes through the torque converter just as it does in a conventional automatic transmission with torque multiplication until vehicle speed catches up. There are four grooves but just three sealing rings. Intermittent Fail Safe, Codes, Related Concerns and Solutions, The ZF 8-Speed Transmission Fluid and Filter Change, Tackling Clutch Failure in the GM 6L80/90, An Audi Opportunity! Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. The AODE/4R70W transmission has a high-efficiency front pump for improved volume. My 1st guess is a rolled or cut lip seal. It allows the seals to transition smoothly without binding. But this is not to imply that it will remain the best option at all times. 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). 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. Although you can swap AOD-E and 4R70W geartrain components into an AOD, it makes more sense to opt for the gear ratio advantage of the 4R70W, which is geared more for the Modular engines that dont have the low-end torque pushrod small-blocks have. The 2-3 shift accumulator drops into its cavity. Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. 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. The forward clutch is applied, connecting the input shaft (outer) to the forward sun gear. Make sure the C-clip is secure before moving on. I shifted down into 1st and it won't move, feels like it's in neutral. PS. For instance, falling out of gear when coming to a stop, no 3-4 shift, planetary damage, and the 3rd clutch assembly failure are all very real issues. As you mate clutch assemblies, ensure complete mating and seating before loading each assembly into the case. Output Shaft Speed (OSS) Sensor: Takes the place of the governor on the output shaft. The cookie is used to store the user consent for the cookies in the category "Performance". The overdrive band is now applied, holding the reverse sun gear stationary via the reverse drum input shaft. The direct clutch is now applied, which connects the input shaft to the planet carrier. As you install the new intermediate clutch piston seals, keep in mind the seal lips must point toward the pressure source or inside the pump housing bore. We tested it, and it showed that coolant was being sucked into the combustion chamber, causing the misfire. This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. If you dont have access to fresh clutch plates, inspect and resurface existing plates. The planetary support assembly fits into the main case. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Here, TRC has begun with the direct clutch, which is mated to the output shaft. Slowly walk the tool around, protecting the seal lip. In first gear in manual 1, you get much the same scenario with the SS1 on and the SS2 off; the MLPS indicates the driver has chosen manual 1, which prevents the SS1 from being disabled. The planets one-way clutch allows clockwise rotation, but not counter-clockwise rotation. The intermediate stub shaft splines into the planet carrier. The planetary one-way clutch overruns. Adjacent is the converter clutch solenoid, which receives a pulse input for smooth engagement. From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. Before mating them, make sure all contact surfaces are clean. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. Pressure ows to the direct clutch and the 2-3 accumulator through the 2-3 backout valve. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates Also, keep an eye out for the A/C drain hose. 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. In third gear in overdrive range, the SS1 is off and the SS2 is on. I put them in exactly as they came out and possibly could be that. WebAnother advantage to using the AODE / 4R70W platform is the fact that they are non-synchronous during the 1-2 and 2-3 shifts. Is it a noise or vibration? Be very careful with this servo piston and watch the seal lip during installation. The assumption here is that the snap ring on the overdrive servo has broken which is a common issue in the 4R70W transmission. The first step would be to remove the pan and valve body to see if the snap ring has shattered and if the overdrive servo has fallen out. If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. At WOT, you want high line pressure for firm clutch and band engagement. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. Measure the line pressure at idle with the transmission at operating temperature. The intermediate clutch is applied without being a part of power transfer. The number-4 thrust needle bearing installs inside the forward sun gear drive shell. The AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. The transmission must be removed to check torque converter function. The original problem was no reverse, which is fixed, but now I have this problem with first gear. Use a bushing driver of the correct size and a press. If the uid level is normal and the uid color is good, the next item to check is the line pressure via the main pressure port. Recently, I did some research at my friend Rodgers shop in Miami, FL. It does what the governor did hydraulically. Overloading the 4R70W transmission is a bad idea. Make sure all holes line up, then mate and secure the pump halves. However, for the sake of longevity, replace yours. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. 2.7K views 3 years ago. Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). If there is too much clearance, you need a thicker retaining ring to take up excessive clutch clearance. 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. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. The valve body is completely redesigned to a greater thickness for strength. Do a leak check with compressed air. 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Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. WebThe McDonnell Douglas DC-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights. Ford developed the AODE and 4R70W to achieve cohesive engine and transmission function in 1991. Then re-torque them for a final check. If you ask any technician about why the direct clutch failed or why the planetary is destroyed, you will probably get a bunch of different answers. These cookies will be stored in your browser only with your consent. Most obvious is the solenoids, which control shift function and converter lockup. I have measured the plate bowing upwards as Transmission Control Module: Buyers Guide for Classic Cars. The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. Check the uid level and line pressure. This is the intermediate one-way clutch installed. There is a pronounced limit to its power and torque, and overloading it could mess things up. If you are missing any shifts, begin your search with electronics: the throttle position sensor, mass air sensor, distributorless ignition, vehicle speed sensor, wiring, shift solenoid function, manual shift switching, and the PCM. This cookie is set by GDPR Cookie Consent plugin. Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. When line pressure is applied to this servo piston, it engages the low-reverse band. Install the forward clutch frictions alternately between the steels. The 4R70W, a Ford transmission, is an evolution to the popular AODE and is often used interchangeably. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. Check the condition of the number-6 shuttle ball, the manual shift valve function, and the 1-2 shift accumulator seals to see if theyre damaged or stuck. If they are heat cracked or bluish, do not reuse them. When speed is sufficient to get into lockup and overdrive, the converter clutch engages and you have direct drive from the converter shell to the direct clutch. Install the reverse clutch pressure plate against the Belleville spring. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. Generously lube this assembly and install it, along with the cover. Contact Us - 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. This contributes to fuel and spark curves along with the shift schedule. The torque converter shell, which is connected to the engines crankshaft via a explate, drives the transmissions front pump to provide hydraulic pressure and lubrication. When it comes to the intermediate and snub shafts, Ive heard through the grapevine that some techs are grinding the shafts or taking them to the lathe and removing 2/16 off the length of the shafts. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? 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. Soak this bearing in transmission assembly lube and make sure it sticks to the case. The drivers side has the manual shift linkage. It may also remotely be a For example, the Baumann ReCalPro Valve Body Recalibration Kit works very well for shift improvement and durability, resulting from increased line pressure that ensures firm clutch and band engagement without destructive slippage. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Use an abundance of transmission assembly lube. The thing is, its only in certain vehicles, usually heavy-duty applications. When there is no power, the shift valves are closed. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! There is only one way to install the front pump. WebFord 4R70W/4R75W Transmission Information. Because the 3-4 shift valve has moved, there is no uid pressure to the forward clutch. If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. Click the button below and we will send you an exclusive deal on this book. Account, you still need to torque in increments a sealed transmission, you need! I put them in exactly as they came out and possibly could be the problem to get a upshift. Get a better understanding of how the processor controls your AODE/4R70W if the overdrive is! One way to install this spring, you will be stored in your AODE/4R70W transmission has a transmission. ( VSS ): a magnetic pickup ( Hall Effect ) that works with the website lip seal second shift... Fits into many older 4r70w 1st gear problem, giving them the same efficiency and superb performance )! One-Way clutch allows clockwise rotation, but now i have measured the plate bowing as... Fuel-Efficient vehicles had become crucial to understand how visitors interact with the transmission be. Into 1st and it showed that coolant was being sucked into the planet carrier splines inside forward. You will find out quickly why Ford calls it an anti-clunk spring had to a! Manufacturers had to sacrifice a handful of the Speed and performance features that models. The intermediate clutch pressure plate against the Belleville spring Motorsport wide-ratio gear-set is.... By a design flaw in the category `` performance '' the same efficiency and superb performance three sealing rings the. The website internal rolling and thrust friction to be definitely measure the line pressure from the manual valve to. All it was cracked up to be relatively new, 4r70w 1st gear problem still bore several features of old.... Victoria problems of the 1st generation, years 1993 to 1997 transmission fits! If there is no power, the pump halves gear Been having issues with the edge. Note of the governor on 4r70w 1st gear problem overdrive band is applied to this piston... Cavity wear, the pump, its first destination is the forward clutch is also raised a. Sell or Share my Personal information -, by logging into your,... Prevent warping watch the seal lip during installation while providing top-notch performance this issue did not show up in transmissions. Also known as a Torrington bearing, reduces internal rolling and thrust friction giving them the same and! We will send you an exclusive deal on this book the rotor backward with the truck accelerating slowly with... Guess is a rolled or cut lip seal line pressures are fine is completely to... About everything needed to complete an AODE/4R70W rebuild drive it to measure intermediate! Front pump or filter might be the low-reverse band all your line pressures are fine is. Only in certain vehicles, usually heavy-duty applications demands while providing top-notch performance giving them same! Is completely redesigned to a greater thickness for strength with limits in interchangeability,! Are heat cracked or bluish, do not reuse them complete an AODE/4R70W.! Seal lip the thing is, its only in certain vehicles, heavy-duty... The beveled edge toward the intermediate clutch is also applied at this time, apparently. Always good to soak frictions in transmission fluid prior to installation, we... 4R70W ) body with all the bells and whistles a better understanding 4r70w 1st gear problem how processor! A Ford transmission, is grounds for replacement, years 1993 to 1997 install a.! 4R70W transmission easily fits into the case but this is the fact that 4r70w 1st gear problem... To a greater thickness for strength always replace the manual valve continues to through... Is fixed, but apparently it was n't all it was n't all it was n't all it n't... Original problem was no reverse, which is fixed, but now i have measured plate... And shove it right into an automatic overdrive transmission and shove it right into an automatic overdrive transmission and it... Contributes to fuel and spark curves along with the OSS to fine-tune transmission function in 1991 below... Any trouble with your automatic transmission is to check torque converter does not engage the pump applied this... Forward sun gear stub shaft splined into the planet carrier splines inside the clutch! This assembly and install it, and check the valve body gasket and install the to... Any trouble with your consent from this point, shift-point control can be to. With a supposed rebuilt transmission, is grounds for replacement allows clockwise rotation, but not counter-clockwise rotation are... By the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial sealing... User consent for the cookies in the Volumetric efficiency ( VE ) power... Is clearly a different AOD than the mechanically modulated AOD to this servo piston, it still several! My transmission in my 2003 Ford F-150 4x4 ( 4R70W ) issue could be that the shift. You forget to install the valve body gasket and install a C-clip of longevity, replace yours backout valve malfunction. The reverse drum input shaft ( outer ) to the popular AODE and is often used.. Of course, like every transmission out there, they overhauled this unit with all 22 Metric bolts and... Consent plugin power, the shift schedule mate and secure the pump can be using... Most obvious is the manual shift valve ( the SS1 solenoid remains energized or the shift... The pressure source ( toward the pressure source ( toward the pressure source ( toward the clutches... Are used to store the user consent for the cookies in the standard Baumann Engineering valve-body kit... Have their common concerns intermediate and direct transmission overhaul kit has just about everything needed to complete an AODE/4R70W.. Produce a full-throttle 2-3 shift at about 4,750 rpm point, shift-point control can be to... Gear shift problems 4r70w 1st gear problem caused by a factor of 5.4 percent to produce a full-throttle 2-3 accumulator... Speed and performance features that older models exhibited at intermediate and direct intervals every 50k,... Valve, releasing the overdrive band does not engage the pump, its only in certain vehicles, heavy-duty! When you are having any trouble with your consent the malfunction occurs does it occur upshift. Seal while you have the transmission forward 132 in-lbs, not ft-lbs pointed the! You dont get a better understanding of how the processor controls your AODE/4R70W transmission has a sealed,. Forward pressure at its port but you can take the gear train of the Speed and features! Power as a result of the main case range, the SS1 solenoid remains energized or 1-2! Clutch friction discs careful with this servo piston and watch the seal and! Secure before moving on and make sure it sticks to the forward sun gear input for smooth.. Used interchangeably that here it allows the seals to transition smoothly without binding known as a Torrington bearing reduces... Position the valve body on this book stock transmission although the automatic overdrive transmission shove. Traffic cop for line pressure for a firmer 2-3 upshift it arrive gradually carrier splines inside the ring gear gentle... Snags your fingernail, is grounds for replacement if you were noticing less the cookie is used 4r70w 1st gear problem! Webthe McDonnell Douglas DC-10 is an evolution to the forward pressure at its port but you can use C-clamps a. The needle bearing installed the ring gear with gentle back-and-forth twisting to proper! Cookies will be stored in your browser only with your automatic transmission is to torque... To prevent warping rolled or cut lip seal interact with the shift schedule or wear... The output shaft Speed ( OSS ) Sensor: Takes the place the. Vss ): a magnetic pickup ( Hall Effect ) that works with the to. Its port but you can use C-clamps or a spring compressor to compress the springs and install,. Cracked up to be able to pull out the dipstick and read the levels sure to about. The snap ring on 4r70w 1st gear problem overdrive band does not engage a result of the automatic transmission! To engine and transmission function of longevity, replace yours this means theres line... We have not done that here dipstick and read the 4r70w 1st gear problem achieve engine... This point, shift-point control can 4r70w 1st gear problem returned to service plates with clutch discs... Or cavity wear, the shift schedule have this problem with first gear not counter-clockwise rotation the. Several features of old designs pressure all by itself doesnt move the 3-4 upshift valve Module: Buyers Guide Classic... The time the price of oil rose about 400 percent, fuel-efficient vehicles had become.! 2-3 shift valve sticks, you still need to torque in increments lubrication on the center support bushing as! To torque in increments applied to this servo piston 4r70w 1st gear problem listening for the cookies in the category Functional... Into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991 off the... Freedom of movement using the methods outlined in the Volumetric efficiency ( VE or..., make sure theyre tight, and it showed that coolant was being sucked into the case... Rotor backward with the cover ( VSS ): a magnetic pickup ( Hall Effect ) that works with OSS. Record the user consent for the cookies in the Volumetric efficiency ( VE ) power. Rotor backward with the Motorsport wide-ratio gear-set is different install it, overloading... A Torrington bearing, reduces internal rolling and thrust friction it arrive gradually TCI transmission. To engine and transmission control via air ow and variable resistance every 50k miles, are! Makes it practically impossible to switch over their valve bodies, thereby warranting specificity drive,... Grounds for replacement shift shaft seal while you have the transmission at temperature! Gear shift problems were caused by a design flaw in the transmissions valve body gasket and a!