well one problem fixed and on to another,, problem am having is when gears are selected sometimes it go's in ok then when try again it will go in but it wont come back out again but when switch ignition off its comes out fine,, have fitted all new gear linkages and bushs on gear lever , new oil and all new mounts on engine have been fitted, any ideas appreciated, van is 1989 fiat ducato autostratus
Technical gear selector problem
- Thread starter tomj25
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Technical gear selector problem
Communicator
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May be a silly question, but have you checked the clutch cable adjustment?
ive adjusted it in and out on the adjuster but makes no difference
Does sound like a clutch disengagement issue for whatever reason, if gears work fine with engine off.
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I did own a 1990 Talbot Express, which would have had the same box, and gear changing mechanism. The gear selection has been described by others as difficult. I particularly remember problems in changing down into second gear when approaching a roundabout, and going downhill. I have some vague and brief notes from that time.
From Peugeot workshop manual I have noted Short Link 111 +/- 1.5mm, Long Link 159 +/- 1.5mm. These are factory settings, but the vague bit is thatI have failed to record where the measurements are taken. They do relate to adjustments at the box. I have recorded that when engaging second gear the selector shaft moved further into the box. Also "Short link pushes to move selector out, hence shorten short link by one turn.). As I recall some improvement was obtained.
Perhaps decoding the above, and applying to your specific problem may help.
From Peugeot workshop manual I have noted Short Link 111 +/- 1.5mm, Long Link 159 +/- 1.5mm. These are factory settings, but the vague bit is thatI have failed to record where the measurements are taken. They do relate to adjustments at the box. I have recorded that when engaging second gear the selector shaft moved further into the box. Also "Short link pushes to move selector out, hence shorten short link by one turn.). As I recall some improvement was obtained.
Perhaps decoding the above, and applying to your specific problem may help.
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I would expect to find one.
thanks for that i will get onto measuring the links once the weather picks up hopefully get some sort of improvement , forgot mention has had new clutch cable and as there wasn't one on van not really sure on where it ran to connect to box would this cause problems if wasnt running where it should be
there isn't one fitted so il get on the hunt through the big box off bits that came with van see if there's anything in there
Main thing with a cable is to make sure it flows nicely in gentle curves etc. anything else will cause jamming issues.
Communicator
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As regards clutch cable adjustment, from first principles I would expect there to at least a trace of free play at the clutch operating lever. I suspect that there may be a specified measurement. Perhaps @bugsymike has it in his auto data manual?
decided to take the mechanism off to get some proper measurements and noticed that on the brand new linkage i have got a bit off damage on the smallest link as if the as is,coming over to far and hitting the side so dont know whats going on there
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Didn't hold out a lot of hope, but found a 1985 Palgrave TSD Manual for the petrol 1.8 and 2 litre versions which states what I thought "no pedal free travel; clutch and brake pedals of equal height".
So basically where you have a clutch pedal that you can put your hand under and lift above the brake pedal easily , then the adjustment of the cable is to bring both pedals to the same height, as in the more slack you take out of the adjustment the clutch pedal rises to match the brake pedal normal height.
By this reckoning if a clutch cable snaps the pedal drops to the floor.
On another note if you have a cable clutch that the pedal has a "top stop" as in you cannot pull the clutch pedal above the brake pedal then normally a 1/16-1/8th of an inch of freeplay at the clutch release arm is sufficient.
Re the latest photos of linkage are the retaining clips missing that keep the ball in the socket , they look like a pin going through the hole in the socket and the other end swivels around to clip in the arm of the socket.
So correct adjustment of the cable should leave the clutch pedal at the same height as the brake pedal when released.
So with cable correctly adjusted, I assume it feels smooth in clutch operation, no funny creaking noises etc. as you steadily depress the pedal?
If the gears select when engine off, I suspect a faulty clutch assembly, usually either oil on the clutch plate or broken fingers on the pressure plate making it out of "true" and not fully disengaging.
A sign of this can be clutch judder when gear has been engaged and trying to pull away on a steep hill.
A very temporary test for oil on clutch plate is to deliberately slip the clutch for a short while which burns the oil off the clutch and see if it engages easier then.
Either way if gears only engage smoothly with engine off I suspect gearbox out and repair as necessary.
If the gears select when engine off, I suspect a faulty clutch assembly, usually either oil on the clutch plate or broken fingers on the pressure plate making it out of "true" and not fully disengaging.
A sign of this can be clutch judder when gear has been engaged and trying to pull away on a steep hill.
A very temporary test for oil on clutch plate is to deliberately slip the clutch for a short while which burns the oil off the clutch and see if it engages easier then.
Either way if gears only engage smoothly with engine off I suspect gearbox out and repair as necessary.