by Ivor Bigtruck on Sat Nov 28, 2009 7:51 pm
Don't really like it when people aim things at me. Makes me keep thinking of all those darts, and ping pong balls, and Thai ladies 'you know whats'!
Seriously though, I don't have the full auto mode on mine, just the semi auto setup, which is crap. Like you say, always tends to select an inappropriate gear. If I had the option I think I'd select full auto mode and see how you get on.
Had mine now four months, and still just about getting used to it. The bloody woodpecker in the dashboard drives me up the wall when you don't disengage the clutch long enough, and the gear change is so damned slow it's crazy, especially when changing up through the range change from 4th to 5th.
You'll probably notice a lurch in the vehicle when you first engage a gear at a standstill, or block change as well. I assume this is because the gearbox is constant mesh and thus is fitted with a clutch, or transmission brake which enables the system to slow down enough to select the gear in the absence of a syncromesh. It feels just like the old Eaton Twinsplitter used to when you fully depressed the clutch to engage it.
I tend to use the 'paddle' under the gear selector and change up or down one, or half a gear at a time when heavily loaded, but this sometimes tends to cancel the selection for no apparent reason at the final moment, leaving you guessing which gear you are in.
Merc were the first to start using auto gear selection of this type about twenty years ago (EPS). You would think by now they would have got it right. Maybe the new trucks are better (mine's a 54 plate).
Nothing at all wrong with the gearbox itself, just the EPS selection setup. Wish I could take the whole thing out and fit a 13 or 18 cog Fuller Roadranger instead though.
I, like Rory, would also appreciate any advice or tips from drivers more experienced with this transmission. Old dogs and new tricks with me I think is the problem.