300 Tdi Serpentine belt tensioner replacement ?

H

Hirsty's

Guest

• Apr 1, 2006

• #1

I have a feeling I need to replace the tensioner pulley assembly ( spring
and wheel ??? ) Could anybody tell me if this is a fraught task or
relatively simple, please. It looks like an aluminium structure which I am
always wary of as it is easier to strip thread here and I am a bit
agricultural in my approach to things )

Ta JoH
--


" ..... it is the provenence of knowledge to speak, and it is the privelage
of wisdom to listen"

 

B

beamendsltd

Guest

• Apr 1, 2006

• #2

In message <[email protected]>
"Hirsty's" <[email protected]> wrote:

>
> I have a feeling I need to replace the tensioner pulley assembly ( spring
> and wheel ??? ) Could anybody tell me if this is a fraught task or
> relatively simple, please. It looks like an aluminium structure which I am
> always wary of as it is easier to strip thread here and I am a bit
> agricultural in my approach to things )
>
> Ta JoH

"It's a doddle" - one stud holds it on. We have had one customer
who managed to sear the stud though.......

Richard
--
www.beamends-lrspares.co.uk [email protected]
Running a business in a Microsoft free environment - it can be done
Powered by Risc-OS - you won't get a virus from us!!
Boycott the Yorkshire Dales - No Play, No Pay

 

R

Richard Brookman

Guest

• Apr 1, 2006

• #3

....and Hirsty's spake unto the tribes of Usenet, saying...


> I have a feeling I need to replace the tensioner pulley assembly (
> spring and wheel ??? ) Could anybody tell me if this is a fraught
> task or relatively simple, please. It looks like an aluminium
> structure which I am always wary of as it is easier to strip thread
> here and I am a bit agricultural in my approach to things )
>
> Ta JoH

20-minute job. You will need a 15mm socket and a long bar (and preferably a
glamorous assistant). Put the socket and bar on the nut in the centre and
turn to relieve the tension on the belt. Wiggle the belt free of the
tensioner (no need to take it off). Undo nuts on tensioner body, remove.
Refitting is the reverse of, etc. The assistant comes in handy to
manipulate the belt off or on while you stand grunting by the side of the
vehicle taking the strain of the tensioner, which is considerable.

If it's the bearing that's gone, these can be rebuilt (there was a thread on
this a few months ago), as the assembly is £60+ as I remember. If the
spring has gone (two markings cast into the body of the tensioner line up
when the belt is on) then it's buy new time. Depends on the symptoms - a
certain amount of squeaking is normal, or so I'm told.

--
Rich
==============================

There are 10 kinds of people in the world - those who understand binary
and those who don't.

 

A

Austin Shackles

Guest

• Apr 1, 2006

• #4

On or around Sat, 01 Apr 2006 09:48:29 +0100, beamendsltd
<[email protected]> enlightened us thusly:

>In message <[email protected]>
> "Hirsty's" <[email protected]> wrote:
>
>>
>> I have a feeling I need to replace the tensioner pulley assembly ( spring
>> and wheel ??? ) Could anybody tell me if this is a fraught task or
>> relatively simple, please. It looks like an aluminium structure which I am
>> always wary of as it is easier to strip thread here and I am a bit
>> agricultural in my approach to things )
>>
>> Ta JoH
>
>"It's a doddle" - one stud holds it on. We have had one customer
>who managed to sear the stud though.......

how, FFS? if the nut jams then it undoes the stud instead, IME.

but yes, doddle. You can also unbolt the tenioner wheel (LH thread, IIRC)
and press the bearings out of it and replace them - depending on whether
it's just the bearings that are kaput.
--
Austin Shackles. www.ddol-las.net my opinions are just that
Appearances: You don't really need make-up. Celebrate your authentic
face by frightening people in the street.
from the Little Book of Complete B***ocks by Alistair Beaton.

 

H

Hirsty's

Guest

• Apr 1, 2006

• #5

Depends on the symptoms - a
> certain amount of squeaking is normal, or so I'm told.
>
> --

Yes mine squeaks but stops if a little water is dribbled onto it, so I have
assumed it is the belt slipping laterally on the pulley whell because the
tension is poor

JoH

 

B

bonnybaggot

Active Member

Posts

404

Location

N. Ireland

• Apr 1, 2006

• #6

could be abadly worn accessories belt try a bit of maintainance spray before any serious spanner work.

 

D

Derry Argue

Guest

• Apr 2, 2006

• #7

"Hirsty's" <[email protected]> wrote in
news:[email protected]:

>
> I have a feeling I need to replace the tensioner pulley assembly (
> spring and wheel ??? ) Could anybody tell me if this is a fraught
> task or relatively simple, please. It looks like an aluminium
> structure which I am always wary of as it is easier to strip thread
> here and I am a bit agricultural in my approach to things )
>
> Ta JoH



If it is a squeak coming from the tensioner area, 10 to 1 it is belt squeak
caused by the belt becoming glazed and setting up a high pitched vibration.
(Sound is vibration, hence the noise). To test, splash some water on the
belt. If the squeak goes, it isn't the tensioner.

Google belt squeak.

Derry

 

H

Hirsty's

Guest

• Apr 2, 2006

• #8

>
> If it is a squeak coming from the tensioner area, 10 to 1 it is belt
squeak
> caused by the belt becoming glazed and setting up a high pitched
vibration.
> (Sound is vibration, hence the noise). To test, splash some water on the
> belt. If the squeak goes, it isn't the tensioner.
>
> Google belt squeak.
>

I have and it does stop,trouble is the tensioner marks are not lined up and
also its not an OEM belt someone mentioned might be a problem

JoH

 

D

Derry Argue

Guest

• Apr 2, 2006

• #9

"Hirsty's" <[email protected]> wrote in
news:[email protected]:

>
>
>>
>> If it is a squeak coming from the tensioner area, 10 to 1 it is belt
> squeak
>> caused by the belt becoming glazed and setting up a high pitched
> vibration.
>> (Sound is vibration, hence the noise). To test, splash some water on
>> the belt. If the squeak goes, it isn't the tensioner.
>>
>> Google belt squeak.
>>
>
> I have and it does stop,trouble is the tensioner marks are not lined
> up and also its not an OEM belt someone mentioned might be a problem
>
> JoH
>
>

I phoned a belt manufacturer a while back and asked to be put through to
the technical department. The technician I spoke to described the problem
as I stated in my previous post adding, "It is the same thing as chalk on a
blackboard. Or dragging your finger down a piece of glass. Or squeaking
windscreen wipers".

He suggested sticking some coarse emery paper to a small flat board and
applying that to the glazed tensioner surface (watch your fingers!) with
the engine running. That worked for me but the squeak eventually came back
(as it will do eventually even with a new belt and tensioner).

But I have since developed occupational deafness and won't bother until I
come to sell it! But it is your choice.

Derry

 

R

Richard Brookman

Guest

• Apr 2, 2006

• #10

"Hirsty's" <[email protected]> wrote in message
news:[email protected]...
>
>
> I have and it does stop,trouble is the tensioner marks are not lined up
> and
> also its not an OEM belt someone mentioned might be a problem
>
> JoH
>

The marks line up when the tensioner is kaput - if you operate the tensioner
you will see that the stronger the tension, the further the marks are from
each other. When the spring inside has had it, they will line up, and time
for a new one. Yours sounds OK.


--
Rich
==============================

There are 10 kinds of people in the world - those who understand binary and
those who don't.

 

H

Hirsty's

Guest

• Apr 2, 2006

• #11

>
> The marks line up when the tensioner is kaput - if you operate the
tensioner
> you will see that the stronger the tension, the further the marks are from
> each other. When the spring inside has had it, they will line up, and
time
> for a new one. Yours sounds OK.
>
> >

Aha thanks Rich I thought they had to be lined up; shows I ought to read the
manual more carefully :-((

I will replace the belt with an OEM one and see if it improves. It was OK
till I had the Cam belt done and the pulley ones at same time !!

Ta
JoH

 

A

Austin Shackles

Guest

• Apr 2, 2006

• #12

On or around Sun, 2 Apr 2006 11:40:27 +0100, "Richard Brookman"
<[email protected]> enlightened us thusly:

>"Hirsty's" <[email protected]> wrote in message
>news:[email protected]...
>>
>>
>> I have and it does stop,trouble is the tensioner marks are not lined up
>> and
>> also its not an OEM belt someone mentioned might be a problem
>>
>> JoH
>>
>
>The marks line up when the tensioner is kaput - if you operate the tensioner
>you will see that the stronger the tension, the further the marks are from
>each other. When the spring inside has had it, they will line up, and time
>for a new one. Yours sounds OK.

Actually, I thought that was the belt... belt stretches and the tensioner
rotates further, if it gets as far as marks-aligned, that's the limit of
belt life. BICBW.

--
Austin Shackles. www.ddol-las.net my opinions are just that
Travel The Galaxy! Meet Fascinating Life Forms...
------------------------------------------------\
>> http://www.schlockmercenary.com/ << \ ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!

 

R

Richard

Guest

• Apr 3, 2006

• #13

As far as I know, it's typical for 300 TDi's. Every 300 TDi Disco and
Defender I know, has a squeaking serpentine belt. Some (the MOT-guy)
say it's due to a worn tensioner, others (dealer) are convinced it's
rust. I've tried the original OEM belt and a Gates one, but both
squeaked, squeak and in all probability will squeak for ever more.
Silicone spray works wonders. Usually keeps it silent for some 1000
kilometers.

..... it is the provenance of knowledge to squeak?

Richard

Hirsty's wrote:
> I have a feeling I need to replace the tensioner pulley assembly ( spring
> and wheel ??? ) Could anybody tell me if this is a fraught task or
> relatively simple, please. It looks like an aluminium structure which I am
> always wary of as it is easier to strip thread here and I am a bit
> agricultural in my approach to things )
>
> Ta JoH
> --
>
>
> " ..... it is the provenence of knowledge to speak, and it is the privelage
> of wisdom to listen"

 

R

Richard Brookman

Guest

• Apr 3, 2006

• #14

....and Austin Shackles spake unto the tribes of Usenet, saying...


> On or around Sun, 2 Apr 2006 11:40:27 +0100, "Richard Brookman"
> <[email protected]> enlightened us thusly:
>
>> "Hirsty's" <[email protected]> wrote in message
>> news:[email protected]...
>>>
>>>
>>> I have and it does stop,trouble is the tensioner marks are not
>>> lined up and
>>> also its not an OEM belt someone mentioned might be a problem
>>>
>>> JoH
>>>
>>
>> The marks line up when the tensioner is kaput - if you operate the
>> tensioner you will see that the stronger the tension, the further
>> the marks are from each other. When the spring inside has had it,
>> they will line up, and time for a new one. Yours sounds OK.
>
> Actually, I thought that was the belt... belt stretches and the
> tensioner rotates further, if it gets as far as marks-aligned, that's
> the limit of belt life. BICBW.

No, Austin, YCBR. It's hard to bring these things to mind when you haven't
got the thing in front of you to think from.

--
Rich
==============================

There are 10 kinds of people in the world - those who understand binary
and those who don't.