New aux belt is 5mm shorter - is going to hurt anything??

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

Moog
Donor 2021
Posts: 30
Joined: 23 Apr 2021, 17:14
x 1

New aux belt is 5mm shorter - is going to hurt anything??

Post by Moog »

Just had a new Gates serpentine aux belt and Gates tensioner fitted as the old belt was squealing a lot.

The mobile mechanic says two belts were listed - 6PK1565 and 6PK1560. He said the 1560 went on easily with no fuss/struggle and that 5mm doesn't mean much as the tensioner will cope with that, plus it'll stretch a bit.

Will that be ok? Not too tight and damage some bearings on the alternator or elsewhere? I've just driven a fair distance and it seems fine.

The one on the car was a very old Gates and that was 6PK1565 but guess that might have been a replacement too at some point.

Any thoughts. Car has the MK1 1.6 8v petrol engine with aircon - 87k miles.

Thanks.

Moog.
User avatar
GiveMeABreak
Forum Admin Team
Posts: 26035
Joined: 15 Sep 2015, 19:38
x 2985

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by GiveMeABreak »

None of those are PSA part numbers, so can't help you there. As you are a Forum donor, if you need official part numbers, please do ask :)
Moog Belt.PNG
There are 3 options available for your vehicle from Citroen: The belt, the belt and the roller kit, or all of the previous plus the coolant pump:

Part: 081655 is the for the OEM original equipment belt. £100.20 (item 8).
Part: 1633128380 is for a cheaper Citroen recommended belt but not original equipment. £41.18

The Belt and Roller OEM kit is no longer available from Citroen, but they do supply a cheaper version - part no: E118415 £69.46 (Item 7).

Finally the belt, roller and pump kit is part (cheaper version): 1611898280 £172.32 (Item 51).

All prices VAT inclusive for reference.
Moog
Donor 2021
Posts: 30
Joined: 23 Apr 2021, 17:14
x 1

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by Moog »

GiveMeABreak wrote:
16 Jun 2021, 17:28
None of those are PSA part numbers, so can't help you there. As you are a Forum donor, if you need official part numbers, please do ask :)
Thanks. The mechanic just said he'd get Gates parts which I know are good so I didn't worry too much.

My local Citroen dealer has never been interested when I call to order parts - lots of huffing and puffing and variously it takes an age to get any parts in at ridiculous prices.

According to the Gates catalogue the longer one should have been used: https://www.gatesautocat.com/v/citroen/ ... k1565.html

But I don't know if 5mm shorter will do any damage?
Moog
Donor 2021
Posts: 30
Joined: 23 Apr 2021, 17:14
x 1

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by Moog »

Looking at that diagram - is the timing belt and waterpump?

Today's was the aux belt - alternator and air-con.
User avatar
GiveMeABreak
Forum Admin Team
Posts: 26035
Joined: 15 Sep 2015, 19:38
x 2985

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by GiveMeABreak »

Moog wrote:
16 Jun 2021, 17:42
Looking at that diagram - is the timing belt and waterpump?
Sorry, not sure what you are asking me here?
Moog
Donor 2021
Posts: 30
Joined: 23 Apr 2021, 17:14
x 1

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by Moog »

GiveMeABreak wrote:
16 Jun 2021, 19:18
Moog wrote:
16 Jun 2021, 17:42
Looking at that diagram - is the timing belt and waterpump?
Sorry, not sure what you are asking me here?
Hi,

Was just checking if the diagram you posted was the aux belt or the timing/cambelt?
User avatar
GiveMeABreak
Forum Admin Team
Posts: 26035
Joined: 15 Sep 2015, 19:38
x 2985

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by GiveMeABreak »

That diagram was for the timing belt, tensioner rollers and water pump which is what I thought you wanted.

Accessories belt below:
Moog Alternator.PNG
Parts:
Original OEM: 5750YE: £44.18
Citroen Cheaper Alternative: 1612551780: £32.88
Moog
Donor 2021
Posts: 30
Joined: 23 Apr 2021, 17:14
x 1

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by Moog »

GiveMeABreak wrote:
16 Jun 2021, 19:35
That diagram was for the timing belt, tensioner rollers and water pump which is what I thought you wanted.

Accessories belt below:

Image

Parts:
Original OEM: 5750YE: £44.18
Citroen Cheaper Alternative: 1612551780: £32.88
Ah that's great - thank you. I can see that 5750YE is coming up as both 1565mm and 1560mm length depending on the manufacturer - so my new one might be fine after all (Gates 1560mm).

Many thanks \:D/
User avatar
GiveMeABreak
Forum Admin Team
Posts: 26035
Joined: 15 Sep 2015, 19:38
x 2985

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by GiveMeABreak »

Your correct one is actually 1564 listed against part number 5750YE, now that we are on the same page :-D
User avatar
white exec
Moderating Team
Posts: 7384
Joined: 21 Dec 2015, 13:46
x 1445

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by white exec »

re: those belt numbers... 4PK1640, eg, just means a ribbed belt, with 4 peaks, and length 1640mm.
The numbering system is used across many makes of belt.

Belt manufacturers often rationalise their large ranges by merging lengths only a few mm apart.
Moog
Donor 2021
Posts: 30
Joined: 23 Apr 2021, 17:14
x 1

Re: New aux belt is 5mm shorter - is going to hurt anything??

Post by Moog »

white exec wrote:
16 Jun 2021, 20:08
re: those belt numbers... 4PK1640, eg, just means a ribbed belt, with 4 peaks, and length 1640mm.
The numbering system is used across many makes of belt.

Belt manufacturers often rationalise their large ranges by merging lengths only a few mm apart.
Ah ok. I notice that with Gates, the belt length changes from 12/2001 onwards to the shorter one that I've got now. (My car is early 2001).

I wonder if the longer one was prone to slipping or Citroen changed something like a pulley/tensioner wheel diameter? :conf: