1991 FM-146 trans question. Seal at transfer case - Ranger-Forums - The Ultimate Ford Ranger Resource

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Old 06-22-2017
Thread Starter
Join Date: Jun 2017
Location: Denver, PA
Posts: 1
1991 FM-146 trans question. Seal at transfer case

Do some Mitsubishi FM-146 5 speeds for 4x4 Rangers have oilpresent in the housing extension? I thought the leak between my transfer caseand housing extension was due to a faulty rear main seal. I wanted to changethe seal in the truck so I bought a junkyard FM-146 trans, bought a seal andreplaced it in the junkyard trans for practice. The seal is about 4 inches infrom the end of the housing. So I go to do the same thing on the trans in thetruck only to find out it is different inside the extension housing. It appearswith the shift rod visible and other things that oil may be required in thisarea. The other FM-146 I have is totally sealed off in the extension housingand with a replaceable rear seal. Are there two different designs? Bottom line,the trans in the truck, does it require just the seal between the trans andtransfer case?
Picture of trans in truck and looks to require oiling.

This picture is the FM-146 trans I have extra and uses a replaceable rear main seal.

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Old 06-27-2017
EaOutlaw's Avatar
Join Date: Apr 2016
Location: Lake Worth
Posts: 647
Hi, your thread may be getting overlooked because it is very hard to read.

The default of this forum seems to be a dark grey screen with white fonts the fonts you have chosen are Black which is hard to see.

If you change it back to white fonts, perhaps we can see what your asking better.

I am not a expert on transmissions, nor do I have much experience with them.

Yet I would think like you do that the transmission in your truck may get some fluid in that section by design.

The junk yard transmission may be a newer design that seems to address the very leak you are experiencing.

Again I am no expert or even good with transmissions so please wait until someone with knowledge in this answers you.

I only answered to help you know your post is hard to read and may be getting overlooked because of it.
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