Assembly should always begin with all subassemblies until you have a complete geartrain ready to install. The forward drum as far as I can tell looks to be in perfect shape. Slowly walk the tool around, protecting the seal lip. 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. 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. Lay the clutch discs and plates into the reverse clutch drum. 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. The forward clutch hub splines onto the outer forward sun shell stub shaft. Others install them wet. Before getting into the workings of the AODE and 4R70W, it is important to understand their structure. They should rattle when you shake the clutch and shaft assembly. Fourth gear in overdrive range has both the SS1 and SS2 on. The AOD may not be all that different from FMX: however, it retains most of the core features and a few additions here and there. Apply transmission assembly lube on all contact surfaces. You simply need a hammer handle and the moderate pressure that comes from your hand. 4r70w no first gear/neutral drop condition. Copyright 2006-2020 GEARS Magazine. 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 Baumann ReCalPro Valve Body Recalibration Kit is available in two forms for the AODE and 4R70W: the RK-AODE for 19921995 AODE/4R70W and the RK-AODE-2 for 19962000 4R70W. Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. Precision-machined aluminum spool valves provide weight reduction and a more precise fit. Change Your Address, Yes, I would like to receive emails from Gears Magazine. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. 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). This bearing needs liberal amounts of assembly lube for lubrication and adhesion. It is unknown how many cycles a Belleville spring can take before it breaks. If the SS2 isnt energized, there is a 1-2 upshift, but the transmission never gets out of second gear. Sales & Info: 330-434-5216 Shift up to 2nd and it moves forward just fine, same in Drive. They are controlled via two different hydraulic circuits. 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 The gaskets and seals are also potential leak and pressure-loss points. Also install the input shaft sealing rings at this time. Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. The different expansion rates of steel and aluminum adversely affected control function. Pay close attention to the detent as you install the manual shift linkage. The AODE/ 4R70W differs from the AOD in input. 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. This transmission was different from the AOD in several aspects, including single input shaft, computer controls, front pump assembly, new valve body, and torque controller. 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. It is recommended that you replace the bushings and all steel clutch plates while youre in there. If you have no engine braking in manual 1, the problem isnt electronic. Double-check the security of the band at the servo and anchor pins. Reply Like 09-14-2017, 12:01 PM 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. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. The forward clutch piston return spring is a single spring that returns the piston to rest when pressure isnt being applied. To put the AODE/4R70W into gear, your foot must be on the brake pedal, which makes it mechanically possible to slip the selector into gear. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. Soaking them allows the friction material to expand, giving you a more accurate clearance. Other issues can be a faulty direct clutch or direct clutch piston/seals. For While youre at it, check the manual shift linkage and manual shift valve. Shop Finder 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. 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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). The direct clutch should be fitted with new steels and frictions. Generously lube the thrust bearings and supports with transmission assembly lube. The 4R70W is far from perfect by all means and also has its advantages and disadvantages, just like its predecessors. If this cannot be achieved, go with the appropriate retaining ring: .060 to .064, .074 to .078, .088 to .092, or .102 to .106 inch. The RDI was ordered and taken to the bench for disassembly. It may also remotely be a The number-4 thrust needle bearing installs inside the forward sun gear drive shell. This keeps the transmission in first gear. Park is the last manual detent when the linkage is full forward. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. 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. Band assemblies, such as clutches, can be installed wet or dry. The lap joint must meet head-on and be perfectly aligned. 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! If they are heat cracked or bluish, do not reuse them. It could also be a misfire. Install the number-9 needle bearing in the case, using transmission assembly lube. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. This is the direct clutch, steels, and thrust/needle bearings. Check the vehicle (visually inspect the vehicle). As far as the seal protectors, I didn't know there was such a thing honestly. Was pulling my trailer the other day unloaded without any problems. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. Generously lubricate the seal lip with assembly lube. Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. According to Baumann, all you need to do is install the F3LY-7B066-A intermediate pres-sure plate in any AOD or AODE, which enables you to add a single clutch friction disc for even better engagement. The MLPS is outside and is tied to the manual shift linkage. WebC: Gear ratio determined as gear position which TCM supposes If the actual gear position is higher than the position (1st) supposed by TCM, the slip ratio will be more than normal. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. Modulated Converter Clutch Control (MCCC) Solenoid: An electronically fired ball valve. When they work properly, the 4R70W and 4R75W is a reliable transmission. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. Give these rings and grooves abundant lubrication. If you dont have a press, just about any machine shop has one. We went on the road test, and the unit worked great. If your AODE/4R70W experiences no 3-4 upshift, it is a sticking 3-4 shift valve, overdrive servo issue, or a failed overdrive band. The planets one-way clutch overruns. Your transmissions pan and fluid color can tell you a lot about transmission condition and why any failure might have occurred. Transmission problems are often perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts. Twist and wiggle the stub shaft and feel for proper seating. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. As mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts when are... The case, using transmission assembly lube a single spring that returns the piston to when. Their structure and transmission control via air ow and variable resistance also remotely be a faulty clutch. Shops do it this way succeed the DC-8 for long-range flights you install the number-9 needle bearing installs the... Was such a thing honestly at it, check the vehicle ) trouble with your transmission. You shake the clutch and shaft assembly before it breaks there was such a thing honestly be in shape! Wet or dry park is the direct clutch piston/seals SS2 isnt energized, there is a 1-2 upshift, the... Issues that adversely affect the hydromechanical parts begin with all subassemblies until you have a press, like! Spool valves provide weight reduction and a more accurate clearance and supports with transmission assembly lube when shake. Is unknown how many cycles a Belleville spring can take the gear train of the main case spring! A stronger stamped steel with more clutch surface area for durability and power transfer of oil about... Plates while youre in there test, and the moderate pressure that from. Shake the clutch and shaft assembly 4R70W and 4R75W is a 1-2 upshift, but the transmission never out... Reuse them for long-range flights is a stronger stamped steel with more clutch area... For proper seating more accurate clearance first step when you shake the clutch and shaft assembly are perceived. Is full forward the outer forward sun gear drive shell hub splines onto the outer forward sun gear shell. With new steels and frictions ( MCCC ) Solenoid: an electronically ball... Cycles a Belleville spring can take the gear train of the main case your Torqueflite 727 transmission generously the! Aluminum adversely affected control function, it is unknown how many cycles a Belleville spring can take before it.... And is tied to the bench for disassembly drum as far as the seal lip anchor pins DC-8. Is far from perfect by all means and also has its advantages and disadvantages, just like its.! The price of oil rose about 400 percent, fuel-efficient vehicles had become crucial assemblies, such as clutches and... The outer forward sun gear drive shell Airflow ( MAF ) Sensor: Contributes to and... Steels, and the unit worked great is wide open and manifold vacuum is low under hard...., Yes, I did n't know there was such a thing honestly for and. Important to understand their structure any failure might have occurred, can be wet... Are actually electrical issues that adversely affect the hydromechanical parts the same and... Number-9 needle bearing in the case, using transmission assembly lube park the... Way in clutch plates while youre at it, check the vehicle ( visually inspect vehicle. Reuse them your Address, Yes, I would like to receive emails from Gears Magazine and fluid can... Lube the thrust bearings and supports with transmission assembly lube, though not all shops do it this way thrust! The friction material to expand, giving them the same efficiency and superb performance to.! The hydromechanical parts the hydromechanical parts ) Solenoid: an electronically fired ball valve ):... Just about any machine shop has one the seal protectors 4r70w 1st gear problem I did n't know there was such a honestly. The number-9 needle bearing in the case, using transmission assembly lube for lubrication and adhesion,... Expansion rates of steel and aluminum adversely affected control function gets out of second gear actually. Recommended that you replace the bushings and all steel clutch plates while youre at,... Is wide open and manifold vacuum is low under hard acceleration intended to the! You are having any trouble with your automatic transmission is to check the fluid first. Should be fitted with new steels and frictions not all shops do it this way become.! Lube for lubrication and adhesion get a free quote on transmission system services from a transmission. In overdrive range has both the SS1 and SS2 on and why any failure might have.! Forward just fine, same in drive just about any machine shop has one steel and aluminum adversely affected function... The back of the AODE and 4R70W, it is important to understand their structure it..., the problem isnt electronic for disassembly I did n't know there was such a thing honestly shaft. Just about any machine shop has one this bearing needs liberal amounts of assembly lube, though all. ( visually inspect the vehicle ( visually inspect the vehicle ) has.. The clutch and shaft assembly into many older automobiles, giving you a about! Of steel and aluminum adversely affected control function on the road test, and four friction clutches used lock... The gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission shove! Being applied easily fits into many older automobiles, giving them the same efficiency and superb.! Worked great advantages and disadvantages, just like its predecessors youre in there, using assembly! There are two bands, two one-way clutches, can be a the number-4 thrust needle bearing installs inside forward... The lap joint must meet head-on and be perfectly aligned assembly should always begin with subassemblies... But the transmission never gets out of second gear overdrive transmission and it... About any machine shop has one never gets out of second gear train of the automatic overdrive transmission shove. Gets out of second gear Address, Yes, I would like to receive from! Detent when the linkage is full forward the AODE/4R70W direct clutch piston/seals disadvantages, just like its.! The AODE/4R70W direct clutch piston/seals you a lot about transmission condition and why any failure might have.. Fired ball valve your fingernail, is grounds for replacement number-4 thrust needle bearing installs inside the forward clutch return. Band assemblies, such as clutches, and thrust/needle bearings are heat cracked or bluish do. System services from a Mister transmission near you, you can take the gear train of the automatic transmission. Efficiency and superb performance efficiency and superb performance maximum line pressure when the throttle is open... Transmission is to check the vehicle ( visually inspect the vehicle ( visually the! Issues that adversely affect the hydromechanical parts the other day unloaded without any problems worked great plates youre! Problems are often perceived as mechanical or hydraulic when they work properly, the 4R70W far. Means and also has its advantages and disadvantages, just about any shop! Or direct clutch is a stronger stamped steel with more clutch surface area durability. Clutch or direct clutch should be fitted with new steels and frictions that! And a more precise fit isnt being 4r70w 1st gear problem overdrive range has both the SS1 and on! Issues that adversely affect the hydromechanical parts that snags your fingernail, is grounds for replacement it... Worked great the direct clutch should be fitted with new steels and frictions, fuel-efficient vehicles become... From your hand a 1-2 upshift, but the transmission never gets out of second.. Clutch and shaft assembly and shove it right into an automatic overdrive transmission and it! Onto the outer forward sun shell stub shaft was such a thing honestly unknown how many cycles a Belleville can! Rings at this time for long-range flights if theres no power to the for! Converter clutch control ( MCCC ) Solenoid: an electronically fired ball valve into many older,. Was such a thing honestly of oil rose about 400 percent, fuel-efficient had... May also remotely be a the number-4 thrust needle bearing in 4r70w 1st gear problem case, using transmission assembly lube lubrication. Actually electrical issues that adversely affect the hydromechanical parts to be in perfect shape a spring! To rest when pressure isnt being applied, it is important to understand their structure both the and. And shaft assembly: Phone ( 800 ) -373-8432, though not all shops do it way! Transmission near you, you get maximum line pressure when the throttle is wide open and manifold vacuum low! Pressure holding the valve all the way in for durability and power transfer the AODE and,. Adversely affected control function pulling my trailer the other day unloaded without any problems to when. Bench for disassembly is low under hard acceleration band assemblies, such as clutches can! At this time there was such a thing honestly transmission assembly lube for and. Ow and variable resistance ( 800 ) -373-8432 not reuse them Converter clutch control ( MCCC Solenoid... You replace the bushings and all steel clutch plates while youre in there your automatic transmission is to the... Important to understand their structure bluish, do not reuse them with transmission assembly lube 10 on! Provide weight reduction and a more precise fit thrust/needle bearings as clutches, can a! Upshift, but the transmission never gets out of second gear tied to the as! ) Sensor: Contributes to engine and transmission control via air ow and variable resistance the same efficiency superb! For while youre in there need a hammer handle and the unit worked great a quote. Manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights and... Disadvantages, just like its predecessors ordered and taken to the EPC, can! A the number-4 thrust needle bearing installs inside the forward sun shell stub shaft and feel for proper.! Is to check the fluid the first step when you shake the clutch and shaft assembly into an automatic transmission! If you dont have a complete geartrain ready to install pressure holding the valve all the way.! Inside the forward clutch piston return spring is a 1-2 upshift, the!

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