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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 06-04-2010, 12:47 AM
usms6784 usms6784 is offline
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1990 F150 4.9L straight 6 5spd. Manual Transmission leak.

I have a leak coming from the transmission at the side where it bolts to the motor. I was wondering if there is a gasket there. Or if it just bolts there. How hard is it to change that out, and how much round about would it cost at a shop? Also what type of fluid should I use to fill when i get the leak fixed. Any help would be much appreciated.
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Old 06-04-2010, 12:59 AM
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Are you leaking transmission fluid or engine oil? If it is either/or and it is coming from where the tranny bolts to the engine, you will more than likely have to pull the transmission. If it is transmission fluid leaking then it is probably a front seal inside the bell housing, if it is engine oil, it is possibly the rear main seal around the crankshaft. If the leak is coming from the shifter tower area on top, check the little rubber plugs on the housing of the shifter towards the front. Those are notorious for leaking. A leaking transmission on one of these transmissions will shell one out in a hurry if you are not careful. I always heard that and tried to keep an eye on mine, but now that I have shelled one out I believe it.
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Old 06-04-2010, 03:43 AM
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Or the fluid leaking out could be brake fluid from the slave cylinder.
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Old 06-04-2010, 09:49 AM
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If this is a Mazda 5-speed, and it probably is, it could be coming from the shift plugs up on the top cover.
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Old 06-04-2010, 09:52 AM
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All 3 of the above post may be a possibity.
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Old 06-04-2010, 02:37 PM
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If it's leaking brake(clutch) fluid then that slave cylinder is about done with. You can check the master clutch cylinder's fluid level. If it's low then the slave is leaking....or you might already know.

If your clutch pedal "throw" is small and it take more to engage the clutch then you know it's brake fluid from the slave.

Brake fluid from the hydraulic clutch system doesn't drip to well - not like tranny fluid/engine oil/gear oil.


If it's tranny fluid (Mercon in the M5R2's) then it could be from the plugs on top as mentioned earlier or a seal break.


Also could be engine oil as mentioned earlier.


All 3 fluids smell different and look different.


Unless - you have all 3 conditions and then you have some fun waiting for you!


Good luck


/Ricache
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Old 06-04-2010, 02:37 PM
 
 
 
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