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700r4 Question

wilpetty

wilpetty

1/2 ton status
Joined
Oct 14, 2012
Posts
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Location
Arlington, Tx
My motor is out now and I pulled the tranny dipstick and the tranny fluid smells burnt. The transmission was not shifting right when I drove it, it did feel like it was possibly slipping. If it had to shift while I was giving it a lot of gas, it would make a weird kind of rattle noise. So should I rebuild the transmission? I know it is a daunting task but it is not my daily driver. My questions are should I go for the rebuild? I just pulled the motor out by myself and all I did was watch my brother do it once while I helped a little. I'm not retarted so give me the benefit of the doubt lol. Also which rebuild kit should I get? Any special tools that I have to buy? How many hours will the rebuild itself take? Anything else you can add would help me with the decision. I am putting a newly rebuilt motor so a rebuilt trans would give me a lot of confidence in this truck:D
 
You could try flushing the fluid and see if it works OK. It's a long shot, but you're only out like $50 in fluid. Sometimes it will make things worse. How many miles are on this transmission?

In Texas, your rig might not fight the pull as hard as rigs do up North. Unless you've done it recently, pulling the tranny can take 6 hours or so - nearly the same for re-install. If you get anything wrong in the build, you'll be repeating those steps. You need to plan DAYS of time.

The teardown takes some meticulous care - make sure you have a workspace sufficient to lay out each of hundreds of pieces in a way you can get them back together in the same order. You must have a good manual. Before deciding to tackle this yourself, study a manual and see if you have the stomach for it.

As for parts, the best case is that you can have the rig down for some time. Then you can tear down, assess and then order parts. You can order a super rebuild kit ahead of time, but you may still find some issues that require more stuff. Ask around for a good local tranny shop that will sell parts to you. Otherwise you'll be searching eBay and www.drivetrain.com and waiting for shipping.

There are plenty of useful special tools. Sometimes you can improvise and make something that will work (I've resized plenty of teflon seals with electrical tape, for example) but there's always the chance you'll get stuck. In some cases, you can leave well enough alone and not disassemble some stuff, but this kind of takes an experienced eye. Again, you may be able to take a subassembly to a tranny shop and beg some help. You might also be able to find a local CK5 member with something?

In the end, it's up to you. If you pull it off and have success, you won't have any fear of anything automotive in the future. If you don't have success, you might end up taking a box full of parts to a tranny shop or buying a used tranny somewhere.
 
Take the tranny out while you still have the motor out... Get it rebuilt by someone, get your motor put in, then get the tranny back.
 
Thanks for the awesome reply:bow: Well from what I've seen I can get a tranny for under 700 around here. I'm the type to tackle a job when everyone says I can't do it. I'd rather just rebuild it than take my chances on just changing fluid and have it go out when I need it the most (which is when they go out). The truck is not a DD so off time is fine since the motor is out anyways. 6 hrs to take it out? I thought since it is unbolted from the motor, all I have to do is basically take out the tranny mount and lower it:confused: My main questions now are: how much would a rebuild myself cost roughly with parts and special tools, what rebuild kit do i look for gasket wise, and what are my odds of tackling this. I don't mind taking 2 or 3 weekends of hard work to tackle this if I know that when it is done, no corners were cut
 
Transmissions are tricky. My vote is its not worth it if you have never rebuilt one before. Just bring it somewhere, have a transgo stage 2 reprogramming kit installed, and it will be a bitchin trans that will last you a long time.

:waytogo:
 
Yeah, if the motor and T-case are already out pulling the tranny is a lot easier. You can also save almost half the cost of a rebuild at some shops if you bring them just a tranny and they don't have to pull/replace. Of course now if there is an issue later, you get to repeat the pull instead of them. Call around and see what people charge and what your current options are for used/rebuilt units. Weigh the options.
 
If youve never rebuilt one before, i would recomend taking it to a rebuild shop. They will probly warrenty it, and they wont charge you a whole lot more than you would pay for a nice rebuild kit yourself. If you do do it yourself, you will need a few new tools, nothing major. Like a decent little press for the springs, and a set of snapring pliers if you dont have any. And yes, be sure you have plenty of room to do it, like a big bench or something. Label everything, and cover it all up when your not working on it so you dont get anything dirty. A nice rebuild manual will be a necessary investment also. And i agree, taking it out yourself already saved you a few hundred bucks, so thats good. And it shouldnt take more than an hour or two to drop it, but if the motor was still in, then it would take quite a bit longer because of the bellhousing and flexplate bolts.
 
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