Work performed on a 1998 Ford F150 4x4 through 4.6L V-8, 4R70W 4spd electronic automatic (code U in doorjamb). This tech write-up was originally posted in ~ That is generally intended because that Ford trucks yet most likely also applies to various other Ford models.

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Follow this instructions at your own risk.

Tools essential for the job:

Safety glassesRubber glovesRatchet, extension, and also 10mm, 11mm, 18mm metric socketsJack stand or elevator (for non-4x4)Cleaning solventDrain panFunnelRags13 quarts Mercon V transmission oil (I provided Castrol - component synthetic) DONOT use Mercon or Dextron III. They room not interchangeable.Filter Kit (Fram FT1167) i m sorry comes with a gasket which you don"t need.Flashlight or work-related light

Note: wear security glasses when under the vehicle for eye security as there"slots the dirt and also grime under there simply waiting come drop into your eyes.


Here"s a photo of the Ford 4R70W infection pan v the gasket sit ontop. The OE gasket is re-usable and is stamped thus shown by the red arrowhead onthe best side that the photo below. Notification the grey colour donut magnet shownby the arrowhead on the height left the the picture.


Wait until the vehicle has cooled off for at least 1/2hr if you"ve simply drivenit come avoid obtaining a "hot oil treatment"... Burns hurt!Remove the rubber investigate grommet (1 1/2inch diameter) in between the engine andthe transmission in the bottom that the bell housing. Use a flathead screwdriverto pry it the end - no difficult.With one assistant under the automobile looking right into the investigate hole with aflashlight or worklight, use the 18mm socket & wrench to rotate the crankshaftpulley (by the radiator) to revolve the engine (clockwise). In the investigate holeyou will watch the speak converter. Have actually your assistant stop you transforming theengine once the 11mm drainpipe bolt is visible in the torque converter. You can dothe procedure yourself yet it is a lot of climbing under the automobile and earlier toturning the crank sheave until you discover the plug.Place your drainpipe pan under the inspection hole and also remove the drain plug the end ofthe talk converter with an 11mm socket and extension. The oil will pour outslowly... In reality it might take a couple hours to completely drain the torqueconverter. The is estimated that that holds almost fifty percent of the infection fluidcapacity or around 6 quarts.Replace the drainpipe plug and also tighten securely however do no over-tighten. Part peoplelike to use locktite on the object to stop it comes out. This is difficultunless friend let it drainpipe overnight so you can clean turn off the plug and dry off thethreads in the speak converter. If liquid is quiet dripping out it will certainly bedifficult. It"s optional! Ok, then after tightening the plug, replace theinspection cover.Loosen all the bolts holding the transmission oil pan on. Very closely remove thebolts through one corner of the pan. Very closely pry the pan under at that corner withyour drainpipe pan underneath. There will certainly be liquid going everywhere. Shot to gain adrain pan the is at the very least 18 inch wide.Keep removing the other bolts but leave them loose on one edge to organize the panup. Tilt it an ext to get much more oil out. Once fifty percent of the oil is drained hold thepan back up v an assistant if you have one and also remove the rest of the boltswhile her assistant holds the pan up. Then closely drop the pan (withoutspilling fluid almost everywhere yourself) right into your drain pan. Drainpipe it.Using rags or file towels and also solvent clean the inner of the pan andcarefully remove the sludge from the pan magnet at the bottom. There is ametallic movie on many of the pan surface that will wipe off.Note the position of the OE filter, traction it off and also replace it with the new one,make certain the old rubber seal comes the end too. Popular music the new filter in ar of theold one in the exact same position. Usage clean rags to clean the gasket adjustment surfaceson the pan and the transmission. The old gasket is re-usable. Location the pan backup onto the transmission. Hand-tighten every the bolts.If you have a torque wrench usage it come make sure you don"t over-tighten thebolts.Using a lengthy funnel fill about 5-6 quarts right into the transmission v thedipstick tube. You"ll require a small neck funnel.Start the engine and also run it because that 30 seconds.Fill one more 4 or 5 quarts.Start the engine again and also run 30 seconds.Inspect level v the dipstick.Fill much more oil approximately "full" note on dipstick.Drive it roughly the block and also again inspect the oil level.

You"re done.

There will certainly remain about 1 or 1 1/2 quarts in the oil cooler and also hoses i m sorry canbe puffy out with compressed air if you so desire yet the hoses will have to beremoved therefore most world don"t bother. It"s also difficult if girlfriend don"t havecompressed waiting handy.

When you start the engine the hydraulic pump in the infection fills up thetorque converter. Girlfriend don"t want to overfill the transmission right away together 13quarts won"t right in that while the engine is stopped because the talk converteris empty to start with, that"s why you need to start it increase a couple of times,otherwise you may blow oil the end the vent pipe and/or blow some seals.

If friend accidentally overfill it, the easiest means to obtain some fluid out is todrain some from the torque converter. Then you won"t have to touch the panbolts.

Procedure on V-6 and EOD or 4R100 automatically transmission will differ slightlywith different sized sockets and also different oil. Inspect your transmission oildipstick. Most Ford truck automatics went from Mercon come Mercon V throughout the1998 model year. Early on models got Mercon and the matching dipstick.Apparently Mercon V can be run in a Mercon transmission yet don"t operation Mercon ina Mercon V transmission.

If you find a small plastic plug with a rubber o-ring, don"t worry, this to be inthe dipstick pipe while the engine was assembled top top the assembly line and fallsinto the infection pan. It"s not a broken or missing part! Discard it or keepit as a souvenir.

Mine took simply a hair over 12 quarts. Capacity if the transmission oilcooler/lines where empty too is noted at 13.5 quarts.

Cost (CDN$):

13 Quarts Castrol Mercon V semi-synthetic $4.88/qt for $63.52Trans filter kit $39.54 (with gasket the isn"t needed)your time $? - approximately 4 hrs for amateur.

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Many infection shops carry out a "power" fluid adjust by hooking approximately the coolerlines and doing a pressure fill/exchange without dropping the infection oilpan. This isn"t the best because you have actually old fluid mixing through new, and youhaven"t changed the filter. As well the magnet in the pan won"t acquire a cleaningand won"t job-related as efficiently to capture metal sludge/particles the end of the oil.Think of a strength flush as taking a shower, then putting your dirty garments backon. Not exactly ideal.