Another Doubler ??? With Pics

[70jimmy]

Bolted the 203 in connected to the T400 tranny. Lower bolt on the passenger side that connects the adapter to the 203 (Stock type) wont go in because a part on the tailshaft housing of the tranny won't let the head of the bolt clear to get into the bolt hole. The other 6 bolts are fine no issues.

I was thinking of grinding off just enough of the housing to clear the bolt head. any issue with doing that and has anybody else run into that issue???

the adapter was already connected to the tranny since the bolts that connect the 2 together are countersunk so it has to be bolted to the tranny first.

 

[Hogback Fabrication]

What adapter between the TH400 and NP203?

 

[sweetk30]

 

[diesel4me]

Allen head bolts fit where hex head ones cant on many things...

 

[70jimmy]

What adapter between the TH400 and NP203?

It is an oem adapter with the foot plate that the crossmember bolts to I assumed for the 203. I am probably calling it by the wrong name.

 

[70jimmy]

Now with pics

Pics

 

[70jimmy]

A little grinding from various angles and it slid right in!

 

[70jimmy]

After I got done I looked like a 14 year old girl with all the aluminum glitter on my face.

Glad I threw on some eye protection!!!

 

[big pappa b]

Take your time and document everything so you can come help me with mine

 

[dremu]

A little grinding from various angles and it slid right in!

We call it "clearancing", as "I cut it until it fit" sounds low-tech

I vaguely recall putting some bolts through first; it was worse than Ikea furniture. Put these bolts in loose and these tight but these not at all, then fit tab A to slot B while holding your elbow sideways under part F.

-- A

 

[sweetk30]

make sure bolt wasnt to long

the inside of the 203 is close for gear to case clearence and if 1 bolt to long it can bind against the gear inside.

 

[BoondocK5]

Warning my way is expensive and time consuming, but it works great.

I have this cool tool from the Aircraft industry called a "Grip gauge". It is for measuring the depth of a hole your installing a bolt into. They're cheap like $2.00. measure the depth of the hole just to the point of being flush with the other side.

Get a grade 8 or better(I prefer grade 9 aerospace quality, or Inconel) threaded stud with the proper thread pitch/count, and a matching washer and nut.
Mark the depth of the hole with a fine tip sharpie on the stud and install with red Loctite. Cut off the stud just below the spot that would keep the nut from going on. All you need is 1- 1 and 1/2 threads showing to get full strength from it.
Then install with nut and washer, do not Loctite the nut. Wait over night, then pull the nut off and re-install it with blue Loctite, to it's correct torque.

Or just go with a an Inverted Allen Head bolt. The above method will never come off of it's own accord.


Edit; After looking at the pics, an Inverted Allen Head bolt is the only thing that will work in that instance.

 

[sweetk30]

wrong length bolt is problem .

factory didnt use allen drive bolt in that area.

simple fix.

 

[63chevyll]

You gave me.something to look.forward to with mine. Glad it was an easy fix

 

[70jimmy]

The doubler is bolted in. Tomorrow I am off to find a fab shop to alter my crossmember so it will work in my rig!