90B24wd
New member
- Joined
- Sep 8, 2007
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- Age
- 67
- Location
- Big Island Hawaii
- Vehicle Year
- 1990
- Vehicle
- Ford
As I am cleaning up a 2.9 M5OD tonight getting it ready for a rebuild, I have noticed that this trans is in very mint condition internally. And why I say this is because while I was cleaning the bearings with solvent, it spins quietly & smooth (even when dry). What I got here is a well broken in trans!!!
I don't remember what the mileage of the truck but, it was an 88 2wd bought 7-8 years ago for parts. (payed $75.00 for it) The outside was caked with grime. This trans is the in best condition compared to the other 4 that I tore apart this week. Some of the others were screwed up rebuilds. The machined & bearing surfaces looks like a mirror. Even the syncros is in mint condition.
I do not know how long the gear oil was in there but thank you to the person who put it in.
The bad part is where the syncros mates to the gears, it is shiny and smooth. This can be corrected with 80 grit sandpaper. The only reason why I think that gear oil should not be used is because where the syncros meshes with the cone part of the gears, it becomes to smooth not letting the syncros to bite the cone for smooth shifting.
I do not have to change any bearings. I'll only change the output shaft & seals.
Gear oil is good for gears & bearings but not for smooth shifting.
I would like to try a trans oil made by Specialty Formlations but don't know where to get it from.
So for those who have gear oil in their M5OD trans it is not all that bad. :icon_thumby: And it is not because this trans has close tolerances ATF must be used either.
I don't remember what the mileage of the truck but, it was an 88 2wd bought 7-8 years ago for parts. (payed $75.00 for it) The outside was caked with grime. This trans is the in best condition compared to the other 4 that I tore apart this week. Some of the others were screwed up rebuilds. The machined & bearing surfaces looks like a mirror. Even the syncros is in mint condition.
I do not know how long the gear oil was in there but thank you to the person who put it in.
The bad part is where the syncros mates to the gears, it is shiny and smooth. This can be corrected with 80 grit sandpaper. The only reason why I think that gear oil should not be used is because where the syncros meshes with the cone part of the gears, it becomes to smooth not letting the syncros to bite the cone for smooth shifting.
I do not have to change any bearings. I'll only change the output shaft & seals.
Gear oil is good for gears & bearings but not for smooth shifting.
I would like to try a trans oil made by Specialty Formlations but don't know where to get it from.
So for those who have gear oil in their M5OD trans it is not all that bad. :icon_thumby: And it is not because this trans has close tolerances ATF must be used either.
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