Alternator drive belt dilema
Discussion
Iam trying to renew the alternator drive belt on my Peugeot 106 1.5 diesel,my local motor spares shop supplied me with a new one which is 775mm long but it took all the adjustment on the tensioner to get it to the right tension,obviously the wrong belt,they then replaced it with a 738mm belt which had the exact opposite effect,much to tight with the tensioner fully backed off.
Any suggestions what length of belt I should try next? i.e with what length of belt would I manage to get the correct tension with only a small amount of the tensioner adjustment taken up?,iam thinking maybe around 750mm
Any suggestions what length of belt I should try next? i.e with what length of belt would I manage to get the correct tension with only a small amount of the tensioner adjustment taken up?,iam thinking maybe around 750mm
^^^^What he said.
If that doesn't produce the goods be an idea to have a word with your local Peugeot dealer's parts dept with your reg & VIN. I've had a quick look on Peugeot Service Box (parts list) under 106 1.5D & the shortest available belt appears to be 775mm - which is what your local place supplied.
I'm assuming the car hasn't any mods, the belt is flat multi ribbed & the belt is correctly routed?
If that doesn't produce the goods be an idea to have a word with your local Peugeot dealer's parts dept with your reg & VIN. I've had a quick look on Peugeot Service Box (parts list) under 106 1.5D & the shortest available belt appears to be 775mm - which is what your local place supplied.
I'm assuming the car hasn't any mods, the belt is flat multi ribbed & the belt is correctly routed?
Edited by paintman on Sunday 3rd April 23:10
Thanks chaps,
I did check both of the above mentioned websites myself,then later realised that the belt may not be routed correctly,i have the tensioner positioned so that the wheel is pushing downwards on the upper run of the belt,so I will try re-positioning it so that it pushes upwards against the lower run and hopefully that should have the desired effect.
I did check both of the above mentioned websites myself,then later realised that the belt may not be routed correctly,i have the tensioner positioned so that the wheel is pushing downwards on the upper run of the belt,so I will try re-positioning it so that it pushes upwards against the lower run and hopefully that should have the desired effect.
t400ble said:
Evoluzione said:
t400ble said:
Is it just a standard V belt?
You'd have to be pretty retarded to get a V belt on the wrong side of a tensioner.Sorry for the late reply but its a ribbed belt,well ive tried every possible way of routing the belt but the only way I can get any tension is the way I had the belt fitted in the first place (with the bottom of the tensioner wheel bearing downwards on the upper run of the belt,and even then it takes nearly all of the adjustment to achieve sufficient tension,there cant be any other reason than a 775mm belt is not the correct one despite what Peugeots own service box and the gsf website says,so its back to the spares shop to exchange the belt for one a couple of cm shorter.
ps before anyone suggests it iam pretty sure my alternator pulley is not too small.
ps before anyone suggests it iam pretty sure my alternator pulley is not too small.
If the tension is correct & you've still got some adjustment - albeit small - left then leave it alone. We've had a number of Peugeots - 205, 306 & currently 2 307s & I can't remember needing to re-adjust the belt tension after fitting.
Come to think of it, I've never needed to re-adjust the belts on my RRC either due to stretching in service & that's V belts.
What length is the old belt?
Did you try your reg/VIN with a Peugeot dealer's parts dept?
Come to think of it, I've never needed to re-adjust the belts on my RRC either due to stretching in service & that's V belts.
What length is the old belt?
Did you try your reg/VIN with a Peugeot dealer's parts dept?
Edited by paintman on Saturday 9th April 02:00
E-bmw - there seems to be almost nothing on google images
paintman - as far as iam aware the belt is the same length as the old one (775mm),I have not tried my reg or vin no. with a Peugeot dealer yet,but i did find this photo on ebay which has the same set up as my own engine,and ive noticed a couple of things in the photo that would make my belt appear to be too long ie the alternator pulley is further away from the tensioner than my own,also the tensioner wheel looks to have some type of rubber coating around the outside (mine is just bare metal)and therefore looks to have a larger diameter.
Can anyone confirm if my tensioner wheel should have the rubber coating around the outside?
paintman - as far as iam aware the belt is the same length as the old one (775mm),I have not tried my reg or vin no. with a Peugeot dealer yet,but i did find this photo on ebay which has the same set up as my own engine,and ive noticed a couple of things in the photo that would make my belt appear to be too long ie the alternator pulley is further away from the tensioner than my own,also the tensioner wheel looks to have some type of rubber coating around the outside (mine is just bare metal)and therefore looks to have a larger diameter.
Can anyone confirm if my tensioner wheel should have the rubber coating around the outside?
Edited by wildone63 on Saturday 9th April 09:06
wildone63 said:
E-bmw - there seems to be almost nothing on google images
paintman - as far as iam aware the belt is the same length as the old one (775mm),I have not tried my reg or vin no. with a Peugeot dealer yet,but i did find this photo on ebay which has the same set up as my own engine,and ive noticed a couple of things in the photo that would make my belt appear to be too long ie the alternator pulley is further away from the tensioner than my own,also the tensioner wheel looks to have some type of rubber coating around the outside (mine is just bare metal)and therefore looks to have a larger diameter.
Can anyone confirm if my tensioner wheel should have the rubber coating around the outside?
I used to work on these old Pugs regularly and never had trouble getting belts to fit.paintman - as far as iam aware the belt is the same length as the old one (775mm),I have not tried my reg or vin no. with a Peugeot dealer yet,but i did find this photo on ebay which has the same set up as my own engine,and ive noticed a couple of things in the photo that would make my belt appear to be too long ie the alternator pulley is further away from the tensioner than my own,also the tensioner wheel looks to have some type of rubber coating around the outside (mine is just bare metal)and therefore looks to have a larger diameter.
Can anyone confirm if my tensioner wheel should have the rubber coating around the outside?
Edited by wildone63 on Saturday 9th April 09:06
The way the belt is fitted on the image is correct,the tensioner pulley is bare metal.The "rubber" coating must be crap from an old belt.
If you go to the parts section on Peugeot Service Box it gets more confusing? they list three!! 770,775,780 and say all these fit a 59.4 Alternator pulley?
Lets face it that Peugeot set up is so simple,just fit a belt that fits.If a 775 is too long and a 738 is too short fit a 750.
I think what you are actually seeing is the other side of the pulley. That one appears to have shoulders on each side to prevent sideways movement of the belt.
Does yours have a flat surface with no shoulders - which would appear to be correct looking at similar items on ebay as I can't find a pic of a proper one using the Peugeot Service Box part number although the line drawing in Service box doesn't show any shoulders.
If the new belt is the same as the old then fit the new one.
As I said earlier, if the belt correctly tensions I wouldn't worry about it.
What was the problem with the old one?
Does yours have a flat surface with no shoulders - which would appear to be correct looking at similar items on ebay as I can't find a pic of a proper one using the Peugeot Service Box part number although the line drawing in Service box doesn't show any shoulders.
If the new belt is the same as the old then fit the new one.
As I said earlier, if the belt correctly tensions I wouldn't worry about it.
What was the problem with the old one?
Edited by paintman on Sunday 10th April 10:12
The wheel on my tensioner does not have shoulders,the problem with the old belt was that when I fitted it it took up almost all of the tensioner adjustment to get it to tighten and I didn't even get a years use out of it before it disintegrated,and I don't want to repeat this saga with a new belt of the same length.
Anyone who fits a new auxiliary drive belt should reasonably expect to be able to re-tension it several times (to compensate for ware & tear) over the course of its life,and should last several years and tens of 1000's of miles
Anyone who fits a new auxiliary drive belt should reasonably expect to be able to re-tension it several times (to compensate for ware & tear) over the course of its life,and should last several years and tens of 1000's of miles
If it's disintegrated - and I take that to mean snapped or broken up in bits - then I'd suggest it's:
Been overtensioned - that can also destroy the alternator bearings.
Been undertensioned allowing excessive slippage
Subject to chemical contamination
Subject to contact with a foreign body - includes something thrown up from the road surface
Old and knackered - visible cracking means replacement time
Poor quality
Damaged pulleys
Seized tensioner pulley
I know I'm repeating myself, but I can't recall the last time I had to re-adjust the belt on any of our cars to take up stretching. Wife's 1.6 307 has still got the belt fitted that was on it when we bought it. Never needed to touch it, it's done over 40k miles since we got it & 79k altogether but I don't know if the belt was changed before we bought it.
As it appears there's no Peugeot listing that caters for your requirement - don't forget to speak to a franchised dealer's parts dept in case we've missed something - best I can suggest is that you'll have to decide how much shorter you want to fit & try & find a belt of that length & profile. Perhaps a visit to a motor factor to see what they can cross reference.
ETA This might be of interest: https://www.gatestechzone.com/en/problem-diagnosis...
Been overtensioned - that can also destroy the alternator bearings.
Been undertensioned allowing excessive slippage
Subject to chemical contamination
Subject to contact with a foreign body - includes something thrown up from the road surface
Old and knackered - visible cracking means replacement time
Poor quality
Damaged pulleys
Seized tensioner pulley
I know I'm repeating myself, but I can't recall the last time I had to re-adjust the belt on any of our cars to take up stretching. Wife's 1.6 307 has still got the belt fitted that was on it when we bought it. Never needed to touch it, it's done over 40k miles since we got it & 79k altogether but I don't know if the belt was changed before we bought it.
As it appears there's no Peugeot listing that caters for your requirement - don't forget to speak to a franchised dealer's parts dept in case we've missed something - best I can suggest is that you'll have to decide how much shorter you want to fit & try & find a belt of that length & profile. Perhaps a visit to a motor factor to see what they can cross reference.
ETA This might be of interest: https://www.gatestechzone.com/en/problem-diagnosis...
Edited by paintman on Sunday 10th April 22:32
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