Ok, I've reached the end of my rope, so I'm posting a thread.
I just swapped a medium case LSD in to my 318is.
The speed sensor, fill plug, and drain plug all keep leaking. The axle seals and pinion seal don't seem to be leaking.
I ordered a new o-ring for the speed sensor, and new crush washers for the plugs, and installed it all tonight. I can't put a torque wrench on the plugs, but I'm tightening the hell out of them, so I feel like they should be creating a fine seal. (I used the wrench on the end of a wrench trick to get the drain plug as tight as I could without feeling like I was going to damage the aluminum threads.)
I took it out for a test drive on the highway, and I'm still leaking oil from all three.
I've done searches, and I can't find much information about the breather on these diffs. When I got the diff shipped to me, it had a black rubber cap on the breather. Should that be on there in the car, or was it just put on for shipping? Should the breather be left exposed? I know the point of a breather is to let air in and out as things heat and cool, but I figured the rubber cap was to keep dirt and debris out while letting the air vent on the sides.
I just swapped a medium case LSD in to my 318is.
The speed sensor, fill plug, and drain plug all keep leaking. The axle seals and pinion seal don't seem to be leaking.
I ordered a new o-ring for the speed sensor, and new crush washers for the plugs, and installed it all tonight. I can't put a torque wrench on the plugs, but I'm tightening the hell out of them, so I feel like they should be creating a fine seal. (I used the wrench on the end of a wrench trick to get the drain plug as tight as I could without feeling like I was going to damage the aluminum threads.)
I took it out for a test drive on the highway, and I'm still leaking oil from all three.
I've done searches, and I can't find much information about the breather on these diffs. When I got the diff shipped to me, it had a black rubber cap on the breather. Should that be on there in the car, or was it just put on for shipping? Should the breather be left exposed? I know the point of a breather is to let air in and out as things heat and cool, but I figured the rubber cap was to keep dirt and debris out while letting the air vent on the sides.
Comment