Thread: Seeking opinions on gearbox binding!

Originally Posted by Thommo

Gearbox changing better, usually no probs when cold or at low revs but experiences a binding type hesitation after stepping off clutch when changing into lower gears.


Thanks
Thommo
95 ES V8 Disco 5spd

ok snipped that.. in there is the key bit of info...

it sounds like your not fully engaging the gear with the clutch fully depressed and its not fully in and your half way between a proper double clutch and an clutchelss change which is causing your baulk ring to do its job as the shaft and gear are not at matched speed.

how fast are you changing? the r380 doesnt like snap shifts if its worn enough and you try it you can still have the syncro trying to do its job when you lift up on the clutch but this is usually accompanied by the teeth snigging on the way in.

can you give a better description of the sypmtom Ive quoted?

Agree with Dave, but also don't forget the R380 on the whole has an 'average' shift quality, and after neglect like you've described,IE condition of the oil you drained out, I would suggest that baulk rings and synchro hubs etc are pretty gummy and/ or worn. The idea at this point would be to run ATF Type F or similar in it for a few thousand K's, then change it, do it again, and then revert to the approved MTF 94 or Castrol syntrans etc.

You may also find that you will get a better shift quality with ATF anyway, especially in cold ambient temps, in which case stick with it, it was standard oil in these boxes up until 1998 From memory. In 1998, LR introduced MTF 94, mostly for it's hot weather shifting and high load impriovements.

JC

Wow, thanks for the quick replies.

Sounds like you guys are a lot more familiar with the R380 than I.

To expand my symptoms..........
When I double (up gear) clutch I some times get a smooth change but not always. At lows speed/revs usually get a smooth change 4 out of 5 times.
At moderate speed revs (moving off from traffic lights trying to keep up a respectable speed to 60 k's I might get 2 smooth changes out of 5.
At high rpm (3500+) can not get a smooth change without riding clutch a "tad".

The problem is most pronounced on the 1 - 2 shifts and lesser on the 2 - 3 shift. Not a problem on 3+ shifts.

Never have any problems down shifting when double clutching and only get a small resistance "sliding" into 2nd from 3rd but only what I would expect from a 175K box.

I will definitely change the oil again, at there is quite likely a lot of the old sludge making its way back in from the cooler I would imagine. I agree to stick with the ATF until I get the problem sorted.

Appreciate your comments

Thommo

Originally Posted by Thommo

Wow, thanks for the quick replies.

Sounds like you guys are a lot more familiar with the R380 than I.

To expand my symptoms..........
When I double (up gear) clutch I some times get a smooth change but not always. At lows speed/revs usually get a smooth change 4 out of 5 times.
At moderate speed revs (moving off from traffic lights trying to keep up a respectable speed to 60 k's I might get 2 smooth changes out of 5.
At high rpm (3500+) can not get a smooth change without riding clutch a "tad".

The problem is most pronounced on the 1 - 2 shifts and lesser on the 2 - 3 shift. Not a problem on 3+ shifts.

Never have any problems down shifting when double clutching and only get a small resistance "sliding" into 2nd from 3rd but only what I would expect from a 175K box.

I will definitely change the oil again, at there is quite likely a lot of the old sludge making its way back in from the cooler I would imagine. I agree to stick with the ATF until I get the problem sorted.

Appreciate your comments

Thommo

I Still think this isn't too bad for a neglected R380 at 175K. I've had NEW ones in D2's behave badly at 15,000km old. Some are even worse than an LT95 for baulkiness and notchy /hesitant neutral - 1st's.
Change the oil a few times and report back Thommo.

JC