2003 4r70w Fluid Change Help
Originally posted by nogojo31
not to get off topic, but does anyone make a replacement trans pan for the 4r70w? i want something with more fluid capacity and a drain plug.
not to get off topic, but does anyone make a replacement trans pan for the 4r70w? i want something with more fluid capacity and a drain plug.
www.mag-hytec.com
I've changed the trans fluid numerous times, it's not by any means a hard job. I put a shift kit in the first time I had it off. Having said that the new deep pan does require the cross member to be removed to install the 2 rear center bolts. Mine's a 4X4 and I don't know if the 2 wheel drive cross member is the same or not. It probably took about an hour and that was draining the convertor also. The Mag-Hytec has the gasket (seal/O-ring) integrated into the pan and is a no-brainer to slide up in.
There are a total of 10 bolts holding the cross member in and that's including the two cat heat shield bolts. If you aren't putting a deep pan in a 10 mm swivel socket makes pulling the pan a breeze. The new pan has allen head bolts. As has already been suggested I take all of the bolts out of the pan except the front 2 center and the 2 rear outboard. Then just gradually loosen the front bolts and then move to the rear just to slowly lower the front of the pan and keep a steady stream flowing, you will never spill a drop. I've got a nice 5 gallon plastic catch pan that is pretty wide and will easily catch the whole width of the pan. I used a small jack and a 4X4 to support the tail shaft housing while the cross member is out. Even though I've changed the fluid a number of times I've never installed a drain plug, I'm looking forward to having a plug in the new pan. I'll change the filter every other change in the future. It's a sweet pan.
The new pan and convertor drain requires 18 qts. on the refill.
There are a total of 10 bolts holding the cross member in and that's including the two cat heat shield bolts. If you aren't putting a deep pan in a 10 mm swivel socket makes pulling the pan a breeze. The new pan has allen head bolts. As has already been suggested I take all of the bolts out of the pan except the front 2 center and the 2 rear outboard. Then just gradually loosen the front bolts and then move to the rear just to slowly lower the front of the pan and keep a steady stream flowing, you will never spill a drop. I've got a nice 5 gallon plastic catch pan that is pretty wide and will easily catch the whole width of the pan. I used a small jack and a 4X4 to support the tail shaft housing while the cross member is out. Even though I've changed the fluid a number of times I've never installed a drain plug, I'm looking forward to having a plug in the new pan. I'll change the filter every other change in the future. It's a sweet pan.
The new pan and convertor drain requires 18 qts. on the refill.
Last edited by GearHead_1; Aug 18, 2004 at 08:39 PM.
MagHytec do not list one for the 4r70w on their site. They only show the 4R100 which is what most 4 x4s have. I would have gotten a maghytec to match my diff cover if they had one. That is why I got the TCI pan.
Originally posted by casey_1
Ford stopped installing drainplugs late in 2001, so no, you don't have a drain plug in the torque converter.
Ford stopped installing drainplugs late in 2001, so no, you don't have a drain plug in the torque converter.
Originally posted by Spaceman Spiff
so how do you drain the TC on 02 and newer trucks?
so how do you drain the TC on 02 and newer trucks?
Originally posted by Norm
MagHytec do not list one for the 4r70w on their site. They only show the 4R100 which is what most 4 x4s have. I would have gotten a maghytec to match my diff cover if they had one. That is why I got the TCI pan.
MagHytec do not list one for the 4r70w on their site. They only show the 4R100 which is what most 4 x4s have. I would have gotten a maghytec to match my diff cover if they had one. That is why I got the TCI pan.
Originally posted by Spaceman Spiff
so how do you drain the TC on 02 and newer trucks?
so how do you drain the TC on 02 and newer trucks?
Years ago I had a friend who had a GM product that didn't have a drain plug in the convertor. He wanted one and to my suprise he drilled a hole and put a pipe plug in it. He must have been extremely lucky as to not have hit an internal fin. The car ran for a decade after that and had no trans problems. I post this only for the humor in facts are stranger than fiction. Don't try this at home.


