(I posted this on LCML.... a lot of you don't go there, so I'm posting here also. It seems most folks on Pirate are also on here.)
In case you are installing an ARB locker and find something strange going on........
My first locker was put in the rear diff about a year ago. No problems.
I just now completed the assembly of the second one for the front diff.
From the get-go, it was obvious that some things (besides the new packaging) had changed.
The seal housing (the part with the air tube... the part you put the two "O" rings in).... has changed. On the older one, the seal housing screwed on to the "clamping plate". On the new version, it is held in place by a large circular clip. As on the previous model, it is also somewhat retained by the lock tab that bolts to the top of the carrier bearing cap.
After assembling, I became concerned that the seal housing rotated about 4 degrees when rotating the ring gear in alternating directions (as in going from forward to reverse). I called ARB and the tech said that it was supposed to do that. According to him, the little movement of the seal housing allows it to float/align itself much better, and that they have had more success in the field with this design.
Something must be OK about it. I've had it hooked up on the bench with 90 lbs and a gauge for almost an hour now.... rotating the mechanism periodically..... with no apparent drop in pressure. 'May also have something to do with the "O" rings, which now appear (IIRC the old ones) larger in diameter.... and the new ones seemed easier to install.
The tech said the new seal housing could be ordered to upgrade an older locker. So, I guess if you are having leaking issues and are putting new "O" rings in. It might be beneficial to order the new seal housing and it's associated parts.
If you've retained your installation manual, you can follow along....
Seal Housing Assembly 081902 replaces old 080101
Seal Housing "O" Rings 160235 replace old 160205 (now larger ?)
Seal Housing Retaining Clip 150601
Clamping Plate 090101 is no longer used
Seal Housing Screws 200501 no longer used
In case you are installing an ARB locker and find something strange going on........
My first locker was put in the rear diff about a year ago. No problems.
I just now completed the assembly of the second one for the front diff.
From the get-go, it was obvious that some things (besides the new packaging) had changed.
The seal housing (the part with the air tube... the part you put the two "O" rings in).... has changed. On the older one, the seal housing screwed on to the "clamping plate". On the new version, it is held in place by a large circular clip. As on the previous model, it is also somewhat retained by the lock tab that bolts to the top of the carrier bearing cap.
After assembling, I became concerned that the seal housing rotated about 4 degrees when rotating the ring gear in alternating directions (as in going from forward to reverse). I called ARB and the tech said that it was supposed to do that. According to him, the little movement of the seal housing allows it to float/align itself much better, and that they have had more success in the field with this design.
Something must be OK about it. I've had it hooked up on the bench with 90 lbs and a gauge for almost an hour now.... rotating the mechanism periodically..... with no apparent drop in pressure. 'May also have something to do with the "O" rings, which now appear (IIRC the old ones) larger in diameter.... and the new ones seemed easier to install.
The tech said the new seal housing could be ordered to upgrade an older locker. So, I guess if you are having leaking issues and are putting new "O" rings in. It might be beneficial to order the new seal housing and it's associated parts.
If you've retained your installation manual, you can follow along....
Seal Housing Assembly 081902 replaces old 080101
Seal Housing "O" Rings 160235 replace old 160205 (now larger ?)
Seal Housing Retaining Clip 150601
Clamping Plate 090101 is no longer used
Seal Housing Screws 200501 no longer used
.