Zane
Member
- Joined
- Aug 13, 2018
- Messages
- 36
- Reaction score
- 8
- Points
- 8
- Age
- 25
- Location
- Hickory nc
- Vehicle Year
- 1987
- Make / Model
- Ford
- Engine Size
- 2.9l
- Transmission
- Manual
- My credo
- There's always a way
Bellow is an article addressing the 5th gear blowout in the fm 145 and fm 146 it talks about the issue and causes as well as lists available parts to prevent the problem
I did not find anything referencing a solution to the problem in the forums just advising to swap in a m50d-r1 figured maybe people should have other options.

Ford Ranger 5 Speed FM145 FM146 5th Gear Problem - autotransmissionblog
Is you Ranger 5 Speed Noisy in 5th Gear? The Mitsubishi 5 speed used in the Ford Ranger from 1985 to 1992 has had a common problem with the 5th gear bearing sleeve wearing into the 5th/reverse synchronizer hub. This problem further has caused the failure of the 5th gear on the main-shaft...
autotransmissionblog.com
I did not find anything referencing a solution to the problem in the forums just advising to swap in a m50d-r1 figured maybe people should have other options.