Shimming accumulators is not a very good approach to making a shift kit, a shift accumulator only controls shift quality, and your only result is going to be very abrupt slamming into gear and possible cracking of the pistons or breaking springs, the best approach however is to study the hydraulic schematics of the transmission and to oversize the orifices that feed the accumulators. Here is a vid of the shifts right after I was done.
You will need to add ~ another quart of trans fluid to replace what was lost from the inside of the accum housing. Replace the top of the accum housing a put back in trans like you took out. Here are the spring part numbers for a 4AFW housing There is a small chance that a spring could break.Mine were not broke, and a local trans shop said they have never had broken accum springs, but 3400-95-modified said he has seen them break. Put the bushings in the correct places in the e "shim 2" that I have labeled here.the bushings must go there. Once out, just pop the 7mm (IIRC) bolts out of the top of the housing and take it off. Then gently rotate it down and then side to side to release the tubes out of the housing.don't break them. To get the housing out of the trans, just release the 4 bolts show here Here are all the internals laying apart with each set of springs sitting next to its respective piston. The 2-3 piston is thicker than the 1-2 piston on the 4AFW accum housing design. Here are some pics w/ the accum pistons w/ the bushings sitting in them. But, I would highly recommend staying with the 3/8" bushing for the 2-3 shift, it works great, not stiff, but quick. Mine is a little too firm, my next fluid change, I will change it out for a thinner bushing. I would recommend making the 1-2 shift bushing thinner that what I have it. as to how thick the washers are spaced will determine how hard the shift will be. You just need a washer with an outer diameter of 1.5" and a inside diameter of. You won't need to make/get a bushing like I had, a few washers spaced to your wanted thickness will do the trick. I shimmed my 1-2 springs and the 2-3 springs w/ a 3/8" thick bushing (which I made at work), I measured the inside of the pistons and you can see them on the following pics. Now, even though the accum housings and pistons look different, I am going to assume that the pistons will all be the same shape and size when taken apart. I looked at several 4T60-e's in a local J/Y and the 4AFW looked to be pretty common. You can find out which design you have by looking at your tranny tag on the back of the trans on the diff housing. The "4AFW" housing will look like the "second design" (this is the one I have in my GP) and the "4CMW" will look like the "third design". In the 4T60-e, you have two choices of accumulator housings, a "4AFW" and a "4CMW". I did mine by shimming the accumulator springs. First off- I give major credit to 3400-95-Modified on 60*v6 for helping me w/ this
0 kommentar(er)
