hoobby Posted May 11, 2022 Share Posted May 11, 2022 (edited) I want to strip down the 240 box to replace input/output bearings found (YouTube) only people speaking Russian and beating it with club hammers did find a nice video but a 260 box same process to break down? Edited May 11, 2022 by hoobby 1 1 Quote Link to comment Share on other sites More sharing options...
Jessopia74 Posted May 11, 2022 Share Posted May 11, 2022 @H-400 had a thread about stripping one down, sure Herman will be able to help with pics. 2 Quote Link to comment Share on other sites More sharing options...
hoobby Posted May 11, 2022 Author Share Posted May 11, 2022 cheers jess think did see part of this thread but only to replace input bearing. the main problem with this box 1st gear is noisy but reverse and all other gears are quite ,worn 1st gear cog or something else. Quote Link to comment Share on other sites More sharing options...
611 Posted May 11, 2022 Share Posted May 11, 2022 Pulling it apart should be quite easy as it will probably only have sealer between the two sections, make sure you have removed every bolt as there is one sneaky one that doesn't look like it has anything to do with it coming apart! See here for a full view of all the parts. https://www.theopelproject.com/workshop-manual-sections/ and an inside pic. https://www.theopelproject.com/opel-manta-5-speed-gearbox-rebuild/ Once you have all the bolts out it just a case of tapping it lose and then tapping it off the main shaft. Getting it on is more of a bugger as you have to line up the 3 selector shafts perfectly before it then just pops on. Again no hitting required if its all located properly. Just take you time and don't be tempted to hit it with the big adjusting tool too hard!! Andy 1 Quote Link to comment Share on other sites More sharing options...
Kevin Abbott Posted May 11, 2022 Share Posted May 11, 2022 There is a detent ball that is a PITA to get correct. When I took the front off an 1800 box to make an adapter for a 265 there was a spring ball. I have no idea how I would of got that back into place. Quote Link to comment Share on other sites More sharing options...
robah Posted May 12, 2022 Share Posted May 12, 2022 (edited) Hope these pictures help. I do have some info on the 4 speed gearbox via Opel GT Source website if needed by anyone. Edited May 12, 2022 by robah Updated info. 2 Quote Link to comment Share on other sites More sharing options...
611 Posted May 12, 2022 Share Posted May 12, 2022 Got the part numbers on my link and although its BMW its the same box so 99% parts should be the same and probably easier to get through BMW. Andy 2 Quote Link to comment Share on other sites More sharing options...
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