Squeaking 300Tdi??

Mine was the aux drive belt (visible from the water pump) on my 300TDi Disco.

Got it replaced, and the squeaking stopped. Came back after about 2000 miles though. Thinking about it, it's not done it for ages.

Oops. :-(

H.

I had a squeak caused by the powersteering pump (bearing collapsed). Mind you, that is not something that will go on for any length of time, and soon the pump won't turn at all, which you can't fail to notice (no power steering).

Pieter

Likely causes are waterpump pully / surpentine belt or viscous fan coupling. Hope its the former as viscous coupling are expensive.

Peter S

Hi Derry, easiest way to check if the serpentine belt is the problem is to spray a small amount of water onto the ribbed side of the belt with the motor running-use an atomiser or sprayer that is used in the garden or for wetting hair or ironing. Be Careful not to get caught in the belt.

If the noise goes then the noise is due to the belt. Sometimes using something like a belt wax (dry lube) will fix the problem.

If the noise doesn't go away check the idler bearings (spray a bit of CRC into them and see what happens.

Hope this helps

Cheers

Phillip Simps>There is a high pitched squeak coming from the front of my

Bet it's the water pump, mine does the same thing but usually only when it is damp in the morning in winter once warmed up it stops ( the noise that is ) 110 300 Tdi

Thanks for all the suggestions. I'll try the easy ones first!

Would I be right in thinking that if it's not the belt or anything obvious, I can remove the belt and should feel movement in individual components (e.g. water pump) due to worn bearings? Or isn't it as easy as that?

That viscous fan l;ooks like a real b*gg*r to get off. But that could be combined with fitting the timing belt modification kit, so that is one compensation.

I have a nasty feeling it may be something expensive as this was a trade-in purchased from a main dealer without warranty. :(

Derry

Alternator bearings are very popular on 300Tdi's - well, to us, amyway!

Richard

On or around 8 Dec 2003 17:22:57 GMT, Derry Argue enlightened us thusly:

serpentine belt can be slipping and or squeaking without being obviously slack.

one trick worth a shot is to take it off and put it back the other way round.

My Disco developed a squeak after the timing belt was changed. The problem was very small pieces of metal embedded in the ribs of the drivebelt, falling from the viscous fan nut after using a blunt chisel and a hammer to dislodge it. I took the belt off and removed all of the metal pieces, (now bright from rubbing on the pulleys) and when it was put back..... no squeak. It might be worth a look.

Chris

Dont know if you have aircon but my squeal came from dry bearings on the air con drive belt Tensioner pulley.It was more of a squeal than a squeak though. Dave

On or around Tue, 9 Dec 2003 11:23:47 +0000 (UTC), "Chris" enlightened us thusly:

lesson here being use a spanner to undo the fan... remembering that it's a left-hand thread...

get or make a special spanner that fits, (usually a big thin o/e one - smaller viscous things are 32mm, the one on the ford is 36 as may be the RR ones, dunno.), set it on the fan nut so that it sits at an angle where you can hammer the other end. Make sure the fan belt is tight, and whap the end of the spanner with a medium-small hammer. Check that you're trying to turn it in the correct direction (see above) and repeat. you may want to apply pressure to the fan belt to tighten it more, and get more pulley grip.

Just undo the nut with a drift and hammer, no special spanner required!

Richard

On or around Wed, 10 Dec 2003 09:53:39 +0000, richard.watson enlightened us thusly:

arwell, I've since been looking at the newly-acquired 1984 RR engine, and the viscous thing is unlike any other I've seen - the ones I've seen have plain front and a hub in the middle at the back which screws onto the front of the water pump. The RR one, I now see, has a nut at the front, and thereby much easier to get at.