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Rear differential fill plug

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Old 05-06-2010, 06:07 PM
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Rear differential fill plug

Where is the fill plug on the rear differential on a 2wd 2000 F150 H9 rear end?I see the vent hose at the top but no fill plug.If there is no fill plug how do yiu fill it?
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Old 05-06-2010, 06:26 PM
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should be on the driver side closer to the pinion, at the back of the center section.

takes a 3/8" ratchet or similar to unscrew. those things can be pretty tough to get off too.
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Old 05-06-2010, 08:15 PM
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Maybe here?

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Originally Posted by Heff View Post
Where is the fill plug on the rear differential on a 2wd 2000 F150 H9 rear end?I see the vent hose at the top but no fill plug.If there is no fill plug how do yiu fill it?
I've got an '04, but maybe yours is in the same place.

It's on the front side of the diff (pumpkin). On the driver's side. So, if you're looking for it from the back of the truck, you won't see it.
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Old 05-07-2010, 03:29 PM
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For the first time removal of the fill plug, a 3/8" breaker bar should make it much easier. After the first time, a regular 3/8" socket wrench should work just fine.

Tip.......before you remove the differential cover, always make sure you can remove fill plug first. May just save you a few choice words.
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Old 05-10-2010, 04:59 PM
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You've got to remove the cover to drain the differential. Go get a new cover. Get one with a drain plug and a fill plug. Some even have dipsticks and gaskets.
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Old 05-10-2010, 06:08 PM
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Originally Posted by Fifty150 View Post
You've got to remove the cover to drain the differential. Go get a new cover. Get one with a drain plug and a fill plug. Some even have dipsticks and gaskets.
just wondering why you would recommend this. how often do you change your diff oil? i really don't see myself having to do it again, so i kept the stock cover.
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Old 05-15-2010, 12:02 PM
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Rear End installed upside down - 200 F150

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Originally Posted by Fifty150 View Post
You've got to remove the cover to drain the differential. Go get a new cover. Get one with a drain plug and a fill plug. Some even have dipsticks and gaskets.
Where can I get a rear differential cover for my 2000 F150 that has a fill plug and drain plug.

It is a 12 bolt 3.55 limited slip differential. The tag code on the pumpkin reads: S919D L55 975 9K30

THANK IN ADVANCE FOR YOUR HELP.
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Old 05-16-2010, 12:37 PM
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http://www.maghytec.com/sterling12-975.aspx
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Old 05-17-2010, 04:29 AM
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Originally Posted by chiefFX4 View Post
just wondering why you would recommend this. how often do you change your diff oil? i really don't see myself having to do it again, so i kept the stock cover.

If you had a dipstick & checked the fluid regularly, you may want to change that fluid more often. Sometimes water gets in there. Especially if you do a lot of off roading, or back the truck down boat ramps.
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