i was driving an 06 plate scania 4/4 today
I dont know what series it is but has a different 4/4 garbox then older ones
I go from 5 high box into 4 low box and some times the gear dose not engage; it just goes into netral
but if I dobble de clutch it I hear a nasty cranking noise and it then goes in
any ideas what going on?
I’d say it’s shagged. We had a 3 over 3 that would sometimes glide in to 4th like a hot knife through butter then sometimes (usually down a busy street) graunch and bang like ■■■■. You’d either lose so much speed trying that you’d go back to third and have another go or lug it in low 4 5th.
You rushing it?
hello mate>>sounds like synchro rings are done for 
- try pre-selecting then getting yr revs near as poss and she should go in nice an sweet (worked on my old w reg 114) cheers d
dm61:
hello mate>>sounds like synchro rings are done for
synchro rings??
sorry say that again in driver terms
I always change gear in the green band 1500 RPM up
mcgregors shafter:
I go from 5 high box into 4 low box and some times the gear dose not engage; it just goes into netral
but if I dobble de clutch it I hear a nasty cranking noise and it then goes in
any ideas what going on?
I would think the range change is slow to work, weak or sticking valve or solenoid perhaps.
Regards,
Nick.
ncooper:
I would think the range change is slow to work,.
Are they eleectrical or pneumatic?
Sorry, I don’t know the answer to that one.
I’m guessing air, as our Scania emits a loud grinding sound as the air builds up
and the range change clicks into place.
Since I leave it in low box, I will guess again that it defaults to high or maybe neutral and is held in low by air pressure.
I have experienced the same problem as you with both the 10 speed and 8 speed Scania gearboxes.
Regards,
Nick
ncooper:
Sorry, I don’t know the answer to that one.
I’m guessing air, as our Scania emits a loud grinding sound as the air builds up
and the range change clicks into place.
Since I leave it in low box, I will guess again that it defaults to high or maybe neutral and is held in low by air pressure.
I have experienced the same problem as you with both the 10 speed and 8 speed Scania gearboxes.
Regards,
Nick
When I took delivery of our new 114 back in 2003 I was told by the guy from Scania that they should be left in HIGH RANGE when parking up overnight to prevent damage to the splitter because they default to high range when the air pressure drops and if left in the low range will cause it to ‘slam’ across back into low range once the air has built up.
Its habit now, always leave in high range when I park up.
As for it crunching, as one of the other guys said, select low range before you change and take your time across the gate as they will hit a false neutral if you rush it.
Cheers,
Roj
rogerreno:
As for it crunching, as one of the other guys said, select low range before you change and take your time across the gate as they will hit a false neutral if you rush it.
Not sure what a gater is
but do you mean take your time between clicking the range switch to puting it in gear
Or take your time when putting it in gear?
I’m sorry but from what’s being said in this thread I really don’t think the professional drivers forum is the right place for it!!! Sorry but I’m dumfounded!!!
rogerreno:
ncooper:
Sorry, I don’t know the answer to that one.
I’m guessing air, as our Scania emits a loud grinding sound as the air builds up
and the range change clicks into place.
Since I leave it in low box, I will guess again that it defaults to high or maybe neutral and is held in low by air pressure.
I have experienced the same problem as you with both the 10 speed and 8 speed Scania gearboxes.
Regards,
NickWhen I took delivery of our new 114 back in 2003 I was told by the guy from Scania that they should be left in HIGH RANGE when parking up overnight to prevent damage to the splitter because they default to high range when the air pressure drops and if left in the low range will cause it to ‘slam’ across back into low range once the air has built up.
Its habit now, always leave in high range when I park up.
As for it crunching, as one of the other guys said, select low range before you change and take your time across the gate as they will hit a false neutral if you rush it.
Cheers,
Roj
Your right there Roger.
Scania’s should allways be parked in High Range.
Plus, Scanny’s have allways been rubbish when cold, no good until the oil warms up.
bigtruck:
I’m sorry but from what’s being said in this thread I really don’t think the professional drivers forum is the right place for it!!! Sorry but I’m dumfounded!!!
thanks for the information Big Truck
coz you have not given any helpfull info on this at all just gob
its amazing those that showt abuse at other member for asking a question usully cant answer the question them self
its call ignorent arrogance
sorry but im being honest
Dazzler:
Your right there Roger.Scania’s should allways be parked in High Range.
Plus, Scanny’s have allways been rubbish when cold, no good until the oil warms up.
Well I heard a story that you park them up in high box to stop them loosing air over night
the gearbox was doing it all day not just cold typical synchromesh
Are you trying to change gear at a high speed?
It’s been a common problem on all range change Scania gearboxes since they stopped making bicycles, in my experience, they start acting up in the mornings, then get worse and worse over time, it’ll need a new range change sometime soon 
have driven a few of these scanias same make modal and box
Had the same problem with all of them
A driving instructor once told me it was the ratchet 
rogerreno:
ncooper:
Sorry, I don’t know the answer to that one.
I’m guessing air, as our Scania emits a loud grinding sound as the air builds up
and the range change clicks into place.
Since I leave it in low box, I will guess again that it defaults to high or maybe neutral and is held in low by air pressure.
I have experienced the same problem as you with both the 10 speed and 8 speed Scania gearboxes.
Regards,
NickWhen I took delivery of our new 114 back in 2003 I was told by the guy from Scania that they should be left in HIGH RANGE when parking up overnight to prevent damage to the splitter because they default to high range when the air pressure drops and if left in the low range will cause it to ‘slam’ across back into low range once the air has built up.
Its habit now, always leave in high range when I park up.As for it crunching, as one of the other guys said, select low range before you change and take your time across the gate as they will hit a false neutral if you rush it.
Cheers,
Roj
We were told the same thing on ‘M’ reg 113’s - still used to see their fitters do it though 
bigtruck:
I’m sorry but from what’s being said in this thread I really don’t think the professional drivers forum is the right place for it!!! Sorry but I’m dumfounded!!!
Some of us are honest enough to admit that we don’t know everything.
I did not know that the recommendation is to leave a Scania in high range overnight and I will do so from now on.
This may be because I haven’t driven all that many over the last 37 years and certainly none new enough that the driver’s handbook was still with it.
Regards,
Nick.
You sure it wasn’t a 3 over 3? 
That would explain your problem as I thought Scania stopped producing a 4 over 4 box about 10 years ago.