300tdi water pump gone again - HELP!

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Originally Posted by Bushrunner

Pity that your harmonic balancer cant be adjusted fore & aft.

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There is adjustment that can be done by using shims, a couple of examples:

To bring the belt forward and away from the engine block if the belt is running towards the back of the other pulley's, fit a shim between the harmonic pulley and the crankshaft.

If the belt is running too far forward and running at the front of the waterpump pulley, move the belt away from the water pump. To do this a shim is then fitted between the waterpump pulley and the waterpump's hub.

The thickness of the shim is determined by those 'measurements' [sic] and the thickness is the same as the amount the pulley is out of line by.

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But the timing cover bearing certainly doesnt sound happy & does wobble

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That would be the number one thing to replace in your case ( pun definitely intended ).

That bearing may spin free enough while unloaded when the tension of the belt is lifted, but could partially seize as it warms up when the belt tension is present. IMHO these sealed bearings often don't have enough grease in them from the factory. ( I'm also guilty your honour, of lifting the seal and squirting some more grease into a brand new bearing. )

The last thing to know about alignment, is the way a belt behave when the axial alignment of the shaft's is out.

....................The belt climbs to the high side!

Having used as a dairy farmer on a daily basis, flat belts on chaff cutters and saw benches. I was shown this years before I had read any theory about it.

Hi Arthur

Yeah i think you are right about the timing cover bearing... I read the DIY fix link you posted & all i was thinking was 'Eeeish' its a South Africanism usually uttered whilst rubbing ones chin, commonly occurring when you have buried a land rover to its chassis & realising you have lent the jack to a friend.. or some such dilemma.

I will see how much the cover is first. There is a really good independent parts supplier who supplies genuine & aftermarket spares at a fraction of dealership prices.

Cheers

Dom

Hi Dom,

'Eeeish', translates very well into Australian as well. :)

Replacing the timing cover bearing isn't really as hard/complex as it might seem. If you're going to replace the old one anyway all you've got to lose (if you stuff it up) :wasntme: is the $40 or so for a Ford Falcon water pump. When I costed the replacement timing cover it was >$550.

The only tools needed are a good press (don't even think of using sockets and bricks with a big hammer) :eek:, angle grinder with 1 mm cutting disc and a vernier/rule to measure the viscous flange mounting face distance from the front of the casting. For me it was 10.5 mm.

The info given in the 'how to' post are spot on, the only difference is that I cut the old drive flange and shaft off with the 1 mm disc to make pressing the old bearing out easier. :)

It wasn't a difficult job and the end result was very good, and a saving of over $500. :D:D:D


Deano :)

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Originally Posted by DeanoH

Hi Dom,

Replacing the timing cover bearing isn't really as hard/complex as it might seem. If you're going to replace the old one anyway all you've got to lose Deano :)

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Yeah I was thinking the same thing. The new cover is available over the counter if i trash the old one. :) I dont have a press & yeah bricks & hammer probably wont pan out well.. but my brother in law is a tool & die maker & has all manour or tools at his disposal. As you say, nothing to loose for trying.

Cheers

Dom

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Originally Posted by Bushrunner

Yeah I was thinking the same thing. The new cover is available over the counter if i trash the old one. :) I dont have a press & yeah bricks & hammer probably wont pan out well.. but my brother in law is a tool & die maker & has all manour or tools at his disposal. As you say, nothing to loose for trying.

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Good to see that your prepared to have a go mate.
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Hi Guys

Well.... 400kms & no leak!! when i was fiddling...errr.. investigating, i took the expansion bottle cap off & immediately coolant dribbled out the weephole... so i got to thinking about Gippslander's post. So i put the origional radiator cap back on & well it seems to be working!

While i was measuring etc i found the little AC pulley bearings were rather shot so i took them off to replace the bearings so running with no AC at the moment, so that could also be a factor. But really i think its the cap if the problem has indeed been solved. 30 degrees today...

Not sure how holding a vacume will make coolant come out the weephole but who cares at this point.:D

I will keep you posted.

thanks again to all the guys that helped out.

Cheers

dom

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Originally Posted by Bushrunner

i took the expansion bottle cap off & immediately coolant dribbled out the weephole... so i got to thinking about Gippslander's post. So i put the origional radiator cap back on & well it seems to be working!

But really i think its the cap if the problem has indeed been solved. 30 degrees today...
Not sure how holding a vacume will make coolant come out the weephole but who cares at this point.

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Hi Dom

I think you have only masked the problem by putting that old cap back on.
So to be on the safe side with any coolant loss occurring, you should have a low level coolant alarm fitted.
one example here; Engine Saver Land Rover Page

Had a look at another D1 300TDi yesterday, for a bloke who had got into trouble with it.
The motor had got that hot, the top land of number two piston had 'welded' itself to the top of the bore!
Prior to stopping at a roadside rest area he was quiet unaware there was a problem, so it was only when he got out he that saw some coolant running under the car.
The car was lifted back to Hobart on a tilt tray truck and in the workshop, the chaps found along with the damage to the bore, blown headgasket, the head was also warped beyond repair.

If that bloke had a low level coolant alarm fitted, ( they go for as little as AU$200 ), he would have saved the cost of another second hand motor $2500 and it's fitting $1500. :eek:

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Originally Posted by wrinklearthur

I think you have only masked the problem by putting that old cap back on.

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Hi Arthur

Well i logged on to declair victory over my waterpump, wont mention the rugby at all, promise.;) Now you have me worried about masking a symptom...:(

I have been checking for water loss, as well as water out the weephole every 60kms (my commute to work). Both when i arrive & before i leave & i am very, very pleased to report no loss of coolant & no dribbles from the hole, in 800kms. The orional expansion bottle cap was never faulty, i simply changed it because a new one came with the new expansion bottle (i could not get my head around a black bottle, someday someone can explain that to me, i am sure there is a logical explaination somewhere...)

My water loss was found to be the head gasket which was changed, along with the radiator, all the hoses & not forgetting the pump, oh & the P gasket. Also had the head heated & pressure tested & it came back perfect. So i am hoping that the mystery is solved.

However i will heed your advice & install a sensor. There are a few on the market here but i like the one on the link you sent cause it measures of the radiator not the expansion tank so hopefully less false alarms. No cutting & drilling is also great, I like power tools, i just dont enjoy making holes in perfectly good equipment.

For added excitement i found out first hand that a landys crumple zone is the other car... I would also like to add to that saying "a landys blind spot is everywhere that isnt in front" I feel bad for the car that I squashed but really, dont stand behind a horse eating a bag of crisps & wonder why it kicked you in the face.

ok ramblings over

Take care

dom

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Originally Posted by Bushrunner

Hi Arthur

Well i logged on to declair victory over my waterpump, wont mention the rugby at all, promise.;) .................................................. ........
ok ramblings over

Take care

dom

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Damm decent of you old man, as a quid pro quo I'll refrain from mentioning the cricket. :D

Glad to see alls worked out OK.

Deano :)

Went shopping today in the AULRO shop and ordered not one but many sensors! :)
Have put a order in with Dave's Interesting Things for three sets for myself and another three for some friends, all for 300 TDi's.
After hearing about then seeing that cooked 300TDi motor the other day, I think they are cheap insurance
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