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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Axle Fluid...

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Old Sep 17, 2007 | 12:00 PM
  #1  
Danger_Dave's Avatar
Danger_Dave
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From: UPSTATE NY
Axle Fluid...

hi everybody. my 1971 was cake to change. i just took the cover off, let the fluid drain, and then put it back on and filled the bolthole with 90w oil and a pump to get it in there. but my 69 i have right now doesnt seem to have that same type of differential. i think it is a 9" and my rpms on the highway are about 2800 at 70mph, (if that gives you any idea of what type it is)
i took a good look at this thing and i really dont understand how i will be able to change this oil....
 
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Old Sep 17, 2007 | 12:09 PM
  #2  
"Beemer Nut"'s Avatar
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From: "Islander"
Sounds like you have a 9", only easy way is to get it hot then pull the oil out the fill hole. This is a lot easier and faster than removing the pumkin unless you suspect damage.
 
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Old Sep 20, 2007 | 09:25 PM
  #3  
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Danger_Dave
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From: UPSTATE NY
where is the fill hole? i do not see one.
and if i suck the oil out there will still be old gunky stuff in there.
what i did to my 71 was take the cover off, and spray the living daylights out of it with brake cleaner and did a real thorough job. its something you are supposed to do every 90k miles and most people NEVER do it. i just know that stuff looks like muddy coffee in there.
 
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Old Sep 20, 2007 | 10:01 PM
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"Beemer Nut"
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From: "Islander"
I dump the D60 around every 25K miles, the oil comes out clear amber. I run a large magnet inside that picks up normal metal wear powder. Old rearend passed 940K and still tight.
The 9" should have the filler on the drop out unit.
 
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