i never took apart the t-case before so i need advice. heres the situation

78 f250 4x4, 435 np 4speed, 205 t-case

i got noticing the rear yoke on the t-case/rear driveline has alot of play up and down. the u-joint is tight however so im assuming theres a bearing behind the yoke seal that the yoke rides in? is it a matter of taking the yoke nut off, and taking the cone shaped peice off that bolts to the t-case? ive never dealt with this problem but it seems the bearing closest to the yoke would be whats worn out, is this correct? i dont want to pull apart any more stuff than whats necesary.

 

Here is an exploded view of your case. Should help you out.http://www.danvm.com/dan/truck/specs...sfer_case.html

The bearing is a simple repair, but have a bucket under the case when you remove the oil seal retainer. It will leak quite a bit, and the stuff is never fun to clean off of the driveway.
Good luck

 

well i have a update. i pulled the yoke out. theres no play in the shaft or bearing like i was expecting. seems the yoke is the problem, it has alot of play on the shaft- up and down, and twisting clockwise/counter clockwise. and some pee brain didnt tighten the yoke nut . i looked at the splines on the shaft and they appear to be fine. is it typical for the splines to wear out in the yoke first ? i can get a new yoke but i sure hope the rear shaft splines arent worn down very much , otherwise a new yoke wont do alot other than a bandaid for more future problems.

 

damn i spoke too soon. one of the bearings is toast. not sure but it may be the bearing at the front of the t-case where the tranny bolts up. probly the front input bearing possibly. do i need to disassemble the whole t-case to replace that front input bearing if thats the problem?

 

can someone give me knowledgable insight on this. i have to drive this truck 800miles in the next few days. i know it would make it because i probly been driving it with worn out bearings for a while but it would be alot easier for me to replace bearings right now. the rear main shaft has quit a bit of up and down play. i pulled the yoke to have a closer look. it doesnt apear all of the play is coming from the big bearing closest to the yoke, it feels like one of the bearings farther back near the transmission on the rear main shaft has play. i read about needle bearings in there- can i just unbolt the housing and pull bearings, gear and shaft all the way out and replace the bearings, without removing the t-case from the transmission? let me rephrase that- if i undo the 4-6 bolts on the rear shaft housing, will it come out as 1 unit- with bearings, t-case gear and shaft attached ?? because theres definatly a bearing worn out thats farther inside on the rear shaft, but i dont know what bearing. will these needle bearings have a chance to fall down into the t-case ?? if so that will cause alot of problems. its a married 205, hooked to a NP 4 speed, on a 78 f250

 

FYI: Those "part" numbers shown in that illustration are not FORD part numbers. The yoke is basic Ford part number 7B214 / the seals are 7B215, rear bearing is 7025.


OP ...where in CA are you?

I can look up all the parts you need, and give you local sources where to find them, but I need the TRANSFER CASE ID TAG NUMBER, if you can find it (it may be missing).

The ONLY way to look up seals in the parts catalog is with that tag number.

Ford used many different ID numbers for the same basic T/C.

I can prolly come up with the ID tag number, but to to be sure, your T/C ID is important.

The tag ID code will be something like: D7TA-7A195-AA

 

[QUOTE=NumberDummy]FYI: Those "part" numbers shown in that illustration are not FORD part numbers. The yoke is basic Ford part number 7B214 / the seals are 7B215, rear bearing is 7025.

Yes sir you are correct. The numbers there are for general reference, and that was provided for its exploded view.
There were several components that were different from unit to unit. Each and every part has its own number stamped on it. For bearings and seals I use a bearing / seal supply house. These facilities do not recognize ford numbers either, bit simply identify a component based upon a demension, ID, OD, and width.
This method eliminates the possibility of not having a factory tag, or the possibility of someone changing a component in the last 30 years.

 

I have the same setup you do. I got a gasket replacement set and replaced all the seals and gaskets on a 205. It is easy to put back together but it is kinda hard to find a good way to torque the nuts down on the end of the yokes they have to be at or around 200ft/lbs if I recall right. My words to you are if your gonna take one side apart take the other side apart as well and make sure there isnt any more damage done than just that one bearing. I got my rebuild kit from broncograveyard. I believe he has one for that 435 tranny as well.

 

[QUOTE=75F350]I also have the "Industry" numbers for the bearing and seals, yokes, u-joints, flanges...and other parts...and usually include them when I type manual trans, transfer case, steering box, and etc. Ford numbers.

Both the '64/72 and '73/79 Ford truck parts catalogs have over 200 pages of master cross reference lists included. Ford to manufacturer numbers, vice versa.

General examples, not necessarily for this application: D4TZ-7B215-C .. T/C Seal ~ Industry # 13001 / D3TZ-7B214-A .. Yoke ~ Industry # 11317.