Rear Diff.

[RAUL AGUILAR]

hello,

Im planning on doing my rear diff service and have a couple questins.

How can I tell if i have the rear limited slip diff. that requires the friction additive or not.

i did a search a while ago and found a post with door codes but i cant find it again.

is there an easyer way to tell..........? :driving:



04 sport trac.

 

[Kevin Palmer]

Look at the door, here are the codes...



L - Limited Slip Differential

C - Conventional Differential



Code ... Ratio

41 ...... 3.27C

42 ...... 4.10C

43 ...... 3.08C

45 ...... 3.55C

46 ...... 3.73C

D1 ...... 3.27L

D2 ...... 4.10L

D4 ...... 3.73L

D5 ...... 3.55L

 

[EddieS'04]

I f you do have limited slip. Use the ford friction modifier additive. I never had much luck with the fluid that says already in it.

 

[Kevin Palmer]

I agree with Eddie.



It is too cheap from Ford to not get the right stuff....

 

[Brian Hill 2]

If you have lots of miles on the limited slip and never changed the clutch packs now is the time. One way is to raise the rear axle off the ground and pull the tire in and out of the axle you may find lot of play when the friction plates get worn out. The friction plates act like a spacer for the c clips on the axle shaft.

 

[RAUL AGUILAR]

Good info, Thank you.

im giong to try and tackle this, this week.



out to look at my door codes.......

 

[Makin Trax]

do the clutch pack whine? I have a whine/ whiring noise coming from what i think is the rear diff ... was thinking it was a pinion bearing but could it be clutch packs?

 

[RAUL AGUILAR]

I dont think so.......

i get a what would be descrived as a loud whine from the rear end all through first gear.......

then it goes away after that.