crunch on gearbox going into 3rd
Moderator: RichardW
crunch on gearbox going into 3rd
guessing its the sychromesh
any one think its worth trying some slick 50 treatment oil?
dont fancy replacing a gearbox!
any one think its worth trying some slick 50 treatment oil?
dont fancy replacing a gearbox!
-
- Moderating Team
- Posts: 11577
- Joined: 02 Apr 2005, 16:11
- Location: Charmouth,Dorset
- My Cars: Currently:
C5 X7 VTR + Satnav Hdi estate Silver
C5 X7 VTR + Hdi Estate 2008 Red
In the past: 3, CX td Safaris and about 7, XM td estates. Lovely cars. - x 1206
The problem with adding 'slippery' additives is that they make the oil more slippery, which is of course what they are for, but if your synchro is worn the last thing you want to do is reduce the friction because it will make it worse. You really need something like sawdust or sand. Only kidding, only kidding, please dont sue me!
The problem will be worn slip rings on the 3rd gear cog.
These slip rings are made from alloy and have been well known to wear out in the BX and Xantia gearboxes.
Putting in slick 50 aint gonna put metal back on !!!!!
But you cab strip a Xantia gearbox without removing the gearbox from the car.
I have replaced a few of these in the past on BX and Xantia's. You remove the N/S front wheel, drain the gearbox and strip off the 5th gear casing, then remove 5th gear with the selector forks. Aftre this is out of the way, you can undo the alloy outer casing and completly strip the gear trains and remove them from the box, without touching the clutch.
It's a bit fiddly the first time, but after a few it can be done in about 4-5 hrs
Regards
Slim
These slip rings are made from alloy and have been well known to wear out in the BX and Xantia gearboxes.
Putting in slick 50 aint gonna put metal back on !!!!!
But you cab strip a Xantia gearbox without removing the gearbox from the car.
I have replaced a few of these in the past on BX and Xantia's. You remove the N/S front wheel, drain the gearbox and strip off the 5th gear casing, then remove 5th gear with the selector forks. Aftre this is out of the way, you can undo the alloy outer casing and completly strip the gear trains and remove them from the box, without touching the clutch.
It's a bit fiddly the first time, but after a few it can be done in about 4-5 hrs
Regards
Slim
Silly point - is the clutch braking near the floor - if it is it may be possible to adjust it properly so that it breaks a bit higher up - and this may allow the synchromesh to work properly!
This is often a problem when a new clutch has been fitted and clutch fitters seem to take pride in never adjusting cables - and seem to try to leave the clutch just breaking when the pedal is pushed hard into the floor.
This is often a problem when a new clutch has been fitted and clutch fitters seem to take pride in never adjusting cables - and seem to try to leave the clutch just breaking when the pedal is pushed hard into the floor.
jeremy
Re: crunch on gearbox going into 3rd
MATTT,
I'd try some Moly Slip first, before paying out for expensive repairs or a replacement gearbox.
I have a slightly notchy gearbox on my Xsara & I used some moly slip, has improved a small amount. Cost me around £5 from Ebay. What car do you own?
I'd try some Moly Slip first, before paying out for expensive repairs or a replacement gearbox.
I have a slightly notchy gearbox on my Xsara & I used some moly slip, has improved a small amount. Cost me around £5 from Ebay. What car do you own?
moly
its a xantia turbo diesel
i was thinking of trying some new oil but as its only the 1 gear it does it in
spoke to ppl and a few replies on here so i dont think it will make any diff adding slick 50 either
its one of those things you can kind of drive around its worse trying to change down into 3rd then its always crunches
weird really as the car has only done 76k gen mileage with 2 owners and it was my dads friend who had t since it was a couple of yrs old
maybe its a weak point on these
i was thinking of trying some new oil but as its only the 1 gear it does it in
spoke to ppl and a few replies on here so i dont think it will make any diff adding slick 50 either
its one of those things you can kind of drive around its worse trying to change down into 3rd then its always crunches
weird really as the car has only done 76k gen mileage with 2 owners and it was my dads friend who had t since it was a couple of yrs old
maybe its a weak point on these