Well, I've made some progress, learned a bunch never having done this before. Got the rear extension and bell housing off. Got the input shaft out. Got the reverse idler shaft out, and the layshaft.
It's been interesting trying to follow the instructions. I'm using the 3-rail gearbox section of the Haynes Spitfire book. I checked my Bentley manual, which is for the 1500 only. Sinlge-rail or 3, it has so little detail that it would have been mostly useless. But the Haynes manual doesn't quite agree with my gearbox either. Maybe the GT6 box is sufficiently different, or the box changed a bit from early to late 3-rail versions. For example: The manual says to remove the top by removing the eight bolts, and note which is the long one. Sure, there were eight bolts but none was longer. But there are actually nine holes, one being empty. The manual says to lift the reverse idler gear out. But the gear clears neither the gear behind it on the output shaft nor the cluster gear. And anyway, it is too large to come through the hole at the back end of the gearbox shell, which I discovered after I removed the reverse idler shaft. The manual did not mention a pin bolt on the reverse idler shaft, but there is one. And I thought (I'm starting to forget what it says!) it said there was a pin bolt holding the layshaft, but there wasn't. There were three springs through the front of the gearbox shell, held in place by the bell housing and apparently exerting pressure on a thrust plate at the front of the layshaft. These were not mentioned in the manual. The layshaft lifted out easily from the back. I do hope it will go back in as easily! Well, all those parts went in once before so it can't be too hard. So far I see nothing untoward, nothing obviously broken, no broken input bearing visible on casual inspection, no broken teeth. As I take the various gears out I expect to see a worn bearing at least on something related to 2nd. That must wait for tomorrow... Is there anything in particular I should be looking for? Some measurement that is more critical that others? Sure is some pretty brass in there. Tanks! -- Jim Muller [email protected] '80 Spitfire, '70 GT6+ _______________________________________________ Support Team.Net http://www.team.net/donate.html [email protected] http://autox.team.net/mailman/listinfo/spitfires http://www.team.net/archive
