4r70w direct drum failure symptoms I believe that the 97 Crown Vic 4R70W which I rebuilt had a steel direct clutch. It is a high-performance unit that delivers high torque and reliability for thousands of miles. This video breaks down how the Smart-Tech® direct clutch drum and shaft kit — packed with all the parts you need for hassle-free rebuilds — eliminates every critical weakness of the OE drum May 3, 2021 · 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. The 4. But I Feb 11, 2017 · When you turn the forward drum you are also driving the direct drum in the bottom and turning the clutches in the reverse drum, so if the clutches are wet with fluid the shaft may be hard to turn. Jun 13, 2018 · Buy 4R70E, 4R70W, 4R75E, 4R75W Drum (Direct, Overdrive) Ford 90-ON: Hard Parts - Amazon. It's actually contacted it and the base stub that sticks out is worn down and mushroomed out. Very hard to size these rings, but fixes ring leakage problem. But just like any other mechanical part, it, too, is prone to failure and specific problems. Some of these items ship sooner than the others. 6 so i bought a used transmisson installed new tranny in truck now i have no 3rd or over drive truck just goes in to acts line it goes into nurtle when shifts in to thrid i turn over drive off 4R70W Direct Drum Failure Symptoms CE525-67902, HP Service Kit EET 4R70W Reverse Drum Only 3 left in stock - order soon. The aftermarket kits which produce more clutches in there, do it by using much thinner steels/frictions. Sonnax direct drum thrust bearing 76243-01 is an OE replacement bearing for all years of Ford AOD, AODE, 4R70E, 4R70W, 4R75E and 4R75W units. To maximize durability and improve clutch capacity in heavy-duty/performance vehicles, Sonnax offers Smart-Tech direct clutch drum and shaft kit 76656-01K, the first upgrade to eliminate every critical weakness. Note The AODE came equipped with the 7- roller element drum. Mar 8, 2022 · Again, everything looks as it should except for the direct clutch drum, which after only is completely burned black again, all of the friction material is worn off the discs and the steels are badly scored. To maximize durability and improve clutch capacity in heavy-duty/performance vehicles, Sonnax offers Smart-Tech direct clutch drum and shaft kit 76656-02K, the first upgrade to eliminate every critical weakness. The manufacturing process of the OE snap ring groove creates high-stress points around the circumference of the drum. 6 DOHC teksid motor with a supercharger. Failure of the intermediate stub shaft and direct drum are almost inevitable when Ford AODE transmissions are pushed to the limit. 4/4WD with 250K miles. Aug 21, 2017 · I read quite a few blog posts and watched some videos and was expecting to find the drum broken along a weld. Fits all years. i heard that the flywheel needs to be ugraded to a marrader ELIMINATE every critical weakness of the 4R70E, 4R70W, 4R75E, 4R75W, AODE OE drum with a Sonnax Smart-Tech direct clutch drum and shaft kit. I am currently rebuilding my 4r70w transmission that slips in every gear and goes into "limp mode" (pushing down the gas pedal doesn't make the car accelerate and makes a weird sound) after reaching a speed of 60 mph. Jul 31, 2024 · Learn about common Ford 4R70W transmission problems, symptoms, consequences, and repair costs in this comprehensive guide. What would cause my direct clutch to burn up in my 4R70W? (which it has on a new rebuild) Also is the standard AOD 2" overdrive band reverse drum sun gear shell (36 teeth) the same part in an early aode ( not 4r70w 38 teeth) ?. Nov 25, 2016 · When Ford introduced the AOD-E and 4R70W it opted for a wider band and drum known as the Lincoln overdrive band/drum though these wider components are standard in the 4R70W. Feb 8, 2003 · The direct drum snap rings are the smallest in the transmission, while the other drums use the same diameter snap rings. 050'' to . Aug 27, 2015 · Engine / Drivetrain Talk - Possibly causes for forward clutch failure. I have one of those kits in one of my previous Crown Vic AOD's. Other issues can be a faulty direct clutch or direct clutch piston/seals. 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. To maximize durability and improve clutch capacity in heavy-duty/performance vehicles, Sonnax offers Smart-Tech direct clutch drum and shaft kits, the first upgrade to eliminate every critical weakness. Rebuilt motor, found out the tranny was toastforward clutch was metal,no friction material at all. couple of questions: 1. Will the input shaft not turn at all or does it take effort to turn it? When the entire transmission is assembled (pump to case gasket, pump o-ring Failure of the intermediate stub shaft and direct drum are almost inevitable when Ford AODE transmissions are pushed to the limit. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. Failure of the intermediate stub shaft and direct drum are almost inevitable when listed Ford transmissions are pushed to the limit. Nov 20, 2012 · 1997 - 2003 Ford F150 - 4r70w transmisson help no 3rd or overdrive - well my transmisson went in my 01 supercrew with a 4. Now I am using a 4. Common Warning Signs of a Failing 4R70W Transmission If you notice any of the following transmission symptoms, it may be time to consider a rebuild or replacement before the damage Nov 15, 2008 · Direct drum steels must slide up and down freely in drum, if not toss drum. Oct 24, 2012 · Reverse Input Drum Update Reverse input drum changed from 7-element roller to 14- element, then to mechanical diode. Oct 14, 2007 · If the TV linkage comes off in an AOD it will burn up the direct clutch. Technical handbook for AODE, 4R70W, 4R70E, and 4R75E transmissions. Date - Late 1997 Reason Reduced failure of the intermediate sprag. What would cause my direct clutch to burn up in my 4R70W? (which it has on a new rebuild) Also is the standard AOD 2" overdrive band reverse drum sun gear shell (36 teeth) the same part in an early aode ( not 4r70w 38 teeth) ? Feb 8, 2003 · On final build, that will mean pulling the output shaft and direct drum apart, adding the ring gear and snap ring to the putput shaft, inserting the output shaft and ring gear into the prepped case, and soon after adding the direct drum. Upgrades are as follows all stamped steel drums the 4R70W gear set, mechan Mar 31, 2010 · Browse all 4R70W transmission parts here or use the filters below to find just what you are looking for. The 4R70W came with the 14- roller element drum. Includes descriptions, electrical components, gear ratios, and troubleshooting. Oct 29, 2004 · i'm rebuilding my 4R70W this weekend due to supposed intermediate clutch failure. When this transmission was last rebuilt, they neglected to put the thrust washer back in! Feb 11, 2017 · 1987 - 1996 F150 & Larger F-Series Trucks - 4R70w Final clearance - Complete tear down and rebuild for my 4R70W and all has gone very smoothly. Check ball in Direct piston likes to leak. Sonnax Transmission parts for Ford 4R70E applicationsHelps cure: 2-3 Neutral 4-3 Neutral Band failure Burnt OD band Case damage Clutch failure Code 628 Delayed lockup Delayed Reverse Erratic Reverse pressure Erratic shifts Loss of Forward under hard acceleration from a stop Low line rise Neutral after 4th No 2nd No 4th No lockup Shudder Soft shifts TCC apply & release concerns Uncontrolled Feb 8, 2003 · Five was most common, until late in the 90's, likely the 4R70W's. Feb 8, 2003 · I strongly believe in using solid rings here as the direct drum is a common failure point in this transmission and these help prevent that failure! I pulled the direct drum off and reassembled the ring gear onto the output shaft to once again make it a single assembly. Mar 31, 2010 · Cracked stiffener plates in '01-later 4R70W/4R75W transmissions cause crossleaks in the Forward/Direct clutch circuit. So measure your snap ring, and see what the next thinner version costs. May 5, 2012 · These transmissions are known for forward drum cracks and drum to pump stator wear. Ignoring early warning signs can result in complete transmission failure, requiring costly repairs or even a full replacement. The 14-element drum is suppose to be the stronger of the two because it has twice as many rollers in Apr 8, 2023 · Hello everybody, hope you all having a good day. May 11, 2014 · THIS scenario leads me to direct drum clutches have failed still, or input shaft broke. Here are some of the 4R70W transmission problems that you should know how to Mar 31, 2010 · Browse all 4R75W transmission parts here or use the filters below to find just what you are looking for. 070'' (selective snap rings) Sep 21, 2003 · Sonnax Transmission parts for Ford AODE applicationsHelps cure: 2-3 Neutral 4-3 Neutral Band failure Burnt OD band Case damage Clutch failure Code 628 Delayed lockup Delayed Reverse Erratic Reverse pressure Erratic shifts Loss of Forward under hard acceleration from a stop Low line rise Neutral after 4th No 2nd No 4th No lockup Shudder Soft shifts TCC apply & release concerns Uncontrolled Jul 18, 2019 · After the teardown, I found that the splines in the direct drum were stripped out, and I mean like somebody took a lathe to them. I have taken every Apr 2, 2008 · I have upgraded a 90 aod transmision and keep burning up the Direct clutch. Good deal, catastrophic failure consistent with symptoms. Failure of the intermediate stub shaft and direct drum are almost inevitable when transmissions are pushed to the limit. Jan 31, 2012 · The direct drum seems to have been pushing very hard against the output shaft plate that's behind it. Always reseat it with small punch and hammer Clutch Clearance Forward - . - Bought a truck with bad motor. The only thing that has caused me some concern is at the very end when you go to install the pump. Jan 9, 2023 · Something odd however, is that the 4 tab bronze forward drum to direct drum thrust washer is just MISSING. Nov 14, 2016 · Sonnax Transmission parts for Ford 4R75E applicationsHelps cure: 2-3 Neutral 4-3 Neutral Band failure Burnt OD band Case damage Clutch failure Code 628 Delayed lockup Delayed Reverse Erratic Reverse pressure Erratic shifts Loss of Forward under hard acceleration from a stop Low line rise Neutral after 4th No 2nd No 4th No lockup Shudder Soft shifts TCC apply & release concerns Uncontrolled Failure of the intermediate stub shaft and direct drum are almost inevitable when listed Ford transmissions are pushed to the limit. Dec 6, 2018 · Stop Chasing AODE, 4R70W Direct Clutch Drum Problems Presented by Sonnax Ramp up performance and reliability with an all-in-one Sonnax transmission upgrade PROVEN to easily handle even the most extreme horsepower and torque. I had rebuilt my 97 transmission (with 99 valve body)with the J-mod a couple tears ago. Estimated hp will be 600 hp. i also plan on adding a B&M 24,000GVM cooler, inline filter, running merc V, and possibly upgrading my TC to a marrader unit. I put it all back together and still have the same shift symptoms, presumably for a different reason this time. Oct 27, 2025 · However, wear and tear over time can lead to performance issues like any transmission. 6 I used with it was 350 hp. So I rebuilt it myself with all new seals, clutches, bushings etc. com FREE DELIVERY possible on eligible purchases Jul 7, 2016 · Looking for anyone who has done the 8 friction disc in the direct drum. the little stub shaft in the middle of the trans is prone to breaking, not the input shaft on the converter end. Instead, I found the splines on the inside of the drum shaft completely stripped out. I'd been noticing since about 200K miles that sometimes going up a hill the engine RPMs would go way up and it would lose most of its torque. Wasn't quite acting right so I pulled it Feb 28, 2023 · The 4R70W transmission is a highly reliable, electronically controlled overdrive with origins dating back to the early nineties. Mar 2, 2022 · Engine / Drivetrain Talk - Very Burned 4R70W Direct Clutch Drums - I have a 2000 F-150 XLT/5. A common failure of listed Ford transmissions is cracking of the forward drum at the snap ring groove. Use 325-4L solid input shaft rings in place of OEM. Learn why this happens and the best way to easily make repairs. The shift solenoids do not control forward and reverse engagements, they simply allow the transmission to shift in the forward ranges, the epc solenoid controls line pressure and the tcc solenoid controls the converter. wxg txmrx wvefsy uip psuh4k dh tzh4 1tpuxb mx3 jch