conornm Posted January 27, 2023 Share Posted January 27, 2023 Hi, just about to start changing some seals on a replacement R380 gearbox before fitting and have a question about the collar. When pressing it back on to the shaft how for down should it go? I’ve read that it should be pressed far enough so that the groove is level with the gearbox casting but looking at the box it’s no where near that far down currently. Any advice? Quote Link to comment Share on other sites More sharing options...
western Posted January 28, 2023 Share Posted January 28, 2023 Which seal are you talking about, a photo or marked parts book diagram would help The double post has been removed. Quote Link to comment Share on other sites More sharing options...
conornm Posted January 28, 2023 Author Share Posted January 28, 2023 The seal collar between the gearbox and transfer box; part 6 in the image. Quote Link to comment Share on other sites More sharing options...
Phill B Posted January 31, 2023 Share Posted January 31, 2023 This help? https://youtu.be/km3f-2A66lk?t=1000 Quote Link to comment Share on other sites More sharing options...
bassmoss Posted February 16, 2023 Share Posted February 16, 2023 I have just used a multi-tool with a carbide blade to cut a wedge off the collar. Best to use a metal ring to protect the seal housing. Once the wedge is cut I used a wedged punch to break the wedge away from the rest of the collar leaving a nice fine crack along the collar. With the clamping tension released, it came off very easily with a screwdriver. Lots of cleaning now as there are metal filings everywhere. Quote Link to comment Share on other sites More sharing options...
uninformed Posted February 16, 2023 Share Posted February 16, 2023 (edited) I just dug up some photos from my R380 build many years ago. IT would seem the collar is seated pretty much down to the rear bearing. Having the centre of groove flush with case makes sense as the LT230 seal is flush like the R380 seal. Bearing puller only just fitted between the rear bearing and collar, and thats a knife edge on the puller. Witness marks shows the collar must have been down hard or very close to the rear bearing. Looking at the rear of case and how the seal sits, suggests to me centre grove of collar would be flush with case Here is the mating input seal on the LT230 Edited February 16, 2023 by uninformed Quote Link to comment Share on other sites More sharing options...
uninformed Posted February 16, 2023 Share Posted February 16, 2023 And a photo pinched from the web.... Quote Link to comment Share on other sites More sharing options...
Daan Posted February 16, 2023 Share Posted February 16, 2023 It is all the way down to the bearing from memory. Quote Link to comment Share on other sites More sharing options...
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