- Joined
- Aug 4, 2021
- Messages
- 1,283
Great job Bro!Rabbit hole day. Installing a rebuilt AX15 from High Gear Transmissions in TN in an '88 XJ. Vehicle had already been swapped to AX15-- should have been a BA10 originally.
It was shipped with the shifter and I went to pull the shifter today so I could shove it under the vehicle. Then the rabbit hole opened. I discovered so much rusty gunk in the shifter housing I decided to unbolt it to clean it out rather than knock it all down into the case.
First, the bolts came out awfully hard and I couldn't understand why. Also the bolts were different lengths and the longer ones had just the bottom threads chewed up. Bonus points if you suspect what happened already.View attachment 177995
I selected the worst hole and started to clean it up with an M8x1.25 tap. It was tapping really weird....couldn't figure that out either. Finally it became clear when my tap shoved out a Helicoil (fortunately I chose an exterior, through hole!!). I really think whatever genius installed these didn't break off the installation tang. Then he just drove the longer bolts into the tang, munching the bottom threads. Helicoil on left:View attachment 177996
Tons of gunk and chunks and rust at the lever seat.View attachment 177998
Also the shifter housing had not been sealed and had remnants of old gasket on it View attachment 177997
And I think this is supposed to be a vent but it's clogged solid.View attachment 178000
I decided to use the shifter housing from the old unit which is when I discovered the conical ball seat was flat out missing from the High Gear unit. Maybe those were the rusty, gritty chunks I found, but does a plastic/poly really break down like that??
View attachment 177999
View attachment 177994
Right now, not too impressed with High Gear, and the packaging on the pallet left a lot to be desired.
I would'nt attempt am AT overhaul. I'm sure I could learn to do it, and do it, but it would be an awful job for me these days, especially the R&R.