Swapped Diff using pumping machine...

[JXW]

This is my second post and it relates to the front and rear diff on my 05 Ram 2500.

I chose Amsoil 75-90 for both the front and rear diff swap. The plan was to remove the covers and get everything out and replace with the new juice. The shop decided to use the pump device rather than remove the covers despite our agreement previously...

I want to know how effective (or ineffective) the pump system is in your real world experience. The fluids had 100K on them and the truck was used for towing a 25' trailer from PA to ID.

 

[Rob_Roy]

Is the fill plug the only magnet in the differential? If so (and they cleaned it) I think you are fine. If there is a magnet on the cover, I would want it removed to clean off the metal.

 

[JXW]

Rob_roy I am not sure about the magnet? the fill plug is stock. Anybody know if it is magnetized and how effective it would be at capturing the particles over 100K miles?

 

[TireDude]

Had someone stop in the shop the other day with a 2wd Ranger, wanting me to drain and replace the rear diff. Went and got a drain dolly and a wrench and put the wrench to a bolt and he goes "You don't have a pump/vacuum thingie like the last place did?" I said "No. If I do these, I do them right and crack it open and clean it all out." He seemed satisfied with that.

 

[willix]

The magnet will continue to collect ferrous metals.

 

[Gary Allan]

I've done it both ways. The distinction being that the first time I serviced the diff's it was the full Monty; covers off and all the paste/collectibles removed. The second or subsequent rounds were with a pump.

 

[deeter16317]

The plugs on the AAM rear are magnetic...

I prefer to pull the covers...the AAMs are very easy since they have a reusable gasket, not RTV needed.

 

[JustinH]

Originally Posted By: HWEaton
Had someone stop in the shop the other day with a 2wd Ranger, wanting me to drain and replace the rear diff. Went and got a drain dolly and a wrench and put the wrench to a bolt and he goes "You don't have a pump/vacuum thingie like the last place did?" I said "No. If I do these, I do them right and crack it open and clean it all out." He seemed satisfied with that.


I agree with you on this one.

Take the cover off, and clean the inside out with a good parts cleaner and a lint free cloth.

Then fill it back up with oil. Now that is the way to do it.

People must not want to wait for the silicon to dry, that's why they try to pump it out.

 

[Rand]

The first change its important to clean it all out.

I've done a few trucks in the family and they were all super gooped up with gray oil goo.

after the first change it does not seem to get that bad even with a 50k mile interval.

If you dont have an option of getting a refund.

I'd just let it go, but its definitely better to remove the cover and get all the metallic glop out.

 

[INDYMAC]

If this were my truck, I would write this gear oil change off as a flush with the AMSOIL. Drive the truck for about 5K miles and then change the fluids the correct way. Running your OEM fluids for 100K probably left one heck of a mess inside the cases. It needs cleaned out if you can open it up.

 

[Slick 55]

Originally Posted By: Gary Allan
I've done it both ways. The distinction being that the first time I serviced the diff's it was the full Monty; covers off and all the paste/collectibles removed. The second or subsequent rounds were with a pump.



I think Gary's approach is the best.

 

[SteveSRT8]

a note of caution: many modern diffs use torque to yield bolts that must be replaced.

Are you sure you want to pull that cover?

But it is kind of silly to imagine you did much by simply sucking it out and refilling!

 

[TireDude]

Originally Posted By: JustinH
Originally Posted By: HWEaton
Had someone stop in the shop the other day with a 2wd Ranger, wanting me to drain and replace the rear diff. Went and got a drain dolly and a wrench and put the wrench to a bolt and he goes "You don't have a pump/vacuum thingie like the last place did?" I said "No. If I do these, I do them right and crack it open and clean it all out." He seemed satisfied with that.


I agree with you on this one.

Take the cover off, and clean the inside out with a good parts cleaner and a lint free cloth.

Then fill it back up with oil. Now that is the way to do it.

People must not want to wait for the silicon to dry, that's why they try to pump it out.


That's why I had DirectTV installed in the waiting room...