SHY 7G Posted January 15, 2014 Share Posted January 15, 2014 Hi on inspection of my rear diff. I've found that some of the smaller gears (items no.2 in the drawing below), have some pitting. What effect will this have on the differential when n use? The diff is a 24-splined type, I also have a perfect 10-splined diff also, which should I go with? thanks Quote Link to comment Share on other sites More sharing options...
Tanuki Posted January 15, 2014 Share Posted January 15, 2014 Has the diff been left at some time with water-contaminated oil in it (after wading?) The only time I've seen significant pitting of diff-gears has been due to lack of post-wading maintenance. If the diff's had water in it there's a good chance the case-hardening of the various bearings will be pitted too. Quote Link to comment Share on other sites More sharing options...
missingsid Posted January 15, 2014 Share Posted January 15, 2014 Hi, You can't just swap from 24 to 10 spline diffs, the halfshafts will need changing but they will match the hubs etc. Besides 24 splines are the better option but with a 4 pin diff rather than a 2 pin as std. Marc Quote Link to comment Share on other sites More sharing options...
Snagger Posted January 15, 2014 Share Posted January 15, 2014 Those gears are rough from new, so unless they're heavily pitted or chipped, I think they'd be alright. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted January 15, 2014 Share Posted January 15, 2014 I have loads of good gears you coud have free Just. Cover my postage List What you would like. ..how about a good centre complete.? Quote Link to comment Share on other sites More sharing options...
SHY 7G Posted January 18, 2014 Author Share Posted January 18, 2014 Yeh I have the 10-spline half-shafts also. Just out of interest would the two non-driven gears (item 2 above) be the same in both the 10 & 24 splined diffs.? Quote Link to comment Share on other sites More sharing options...
SHY 7G Posted January 19, 2014 Author Share Posted January 19, 2014 Out of pure interest why is a 24-spline better than a 10-spline? Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted January 19, 2014 Share Posted January 19, 2014 Quote Link to comment Share on other sites More sharing options...
SHY 7G Posted January 22, 2014 Author Share Posted January 22, 2014 thanks for the video, very helpful and informative. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 22, 2014 Share Posted January 22, 2014 Stock 2 pinion 24 spline diffs should be free as people have barn fulls of them.... You should be able to just get another if yours is bad. Otherwise upgrade as they are not the most robust items the world has ever seen. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 22, 2014 Share Posted January 22, 2014 The video... "2 pin" does not refer to the "pins". It is short for "pinion"....the little gears.... Quote Link to comment Share on other sites More sharing options...
SHY 7G Posted January 31, 2014 Author Share Posted January 31, 2014 Had time today to remove the rear differential and have a good look. Not good news the drive pinion gears are totally shot to pieces , very heavily pitted, as if there were small metal fragments crunching between the drives. Now need to find a replacement 24-splined diff. Has anyone got one going? Quote Link to comment Share on other sites More sharing options...
Snagger Posted January 31, 2014 Share Posted January 31, 2014 That's not pitting; that's chipping. I may sound like semantics, but it's a very different issue. Pitting can be due to corrosion or manufacture, but chipping is more significant damage that renders the gear scrap. Quote Link to comment Share on other sites More sharing options...
SHY 7G Posted February 2, 2014 Author Share Posted February 2, 2014 it's scrap weight now, no point putting it back in and hoping for the best. now it's whether to keep existing and renew pinion gears (around £70) or buy a second hand unit from a breakers for the same type of money?? Quote Link to comment Share on other sites More sharing options...
Snagger Posted February 2, 2014 Share Posted February 2, 2014 As long as you check the second hand unit, it'd be easier to go with that - the chips won't have done the crown, pinion or bearings any favours, so you may end up needing to replace more, and setting up the new gears will take a little time and effort that a replacement wouldn't need. Quote Link to comment Share on other sites More sharing options...
Phil Hancock Posted February 2, 2014 Share Posted February 2, 2014 The chips between the pinion and crownwheel could have knocked the crownwheel flange on the diff center out of true if they were bigger than the clearance between the gears. Quote Link to comment Share on other sites More sharing options...
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