Whilst up at my mot garage the guys showed me an interesting situation that saved a wrecked engine.
The fan belt had shredded and entered the timing belt casing causing the belt to jump off.
You would expect valve damage or serious problems, BUT the cam pulley has a woodruff key designed to break off in case of timing belt breakage/valve/piston contact.
All it needed was a new cam pulley, timing belt, and fan belt....very simple, fast job, excellent
steve_earwig wrote:Ohh, 'ark at Mr. Pedantic there He means aux belt, old habits die hard with some of us pensioners
That does sound better than smashing all the cam followers. Shame about the rest of the car tho...
sorry i dont mean to sound rude im just interested to see how a transverse engine can have a mechanical fan, it worked in the mini with its radiator at the side, and i seen a petrol 305 with some system of belts that run a fan at the front.
Farmer - the definition of 'Fan belt' has been misused over the years and it really means Auxiliary Belt (driving the alternator etc.) on old rear wheel drive motors this belt also drove the Fan at the front hence the name.
Cars in my care:
2021 Kia Spottage 1.6 Pez Turbo Dual Clutch Gearbox Trickery
2013 Renner Twingo - donkey work
Welly wrote:Farmer - the definition of 'Fan belt' has been misused over the years and it really means Auxiliary Belt (driving the alternator etc.) on old rear wheel drive motors this belt also drove the Fan at the front hence the name.
Yeah, it's just a question of terminology or laziness in my case, I'm just too lazy to write auxiliary belt or the even more accurate term of serpentine belt
I could have written alternator belt as well
In the old days everyone called it the fan belt and as Steve correctly pointed out I'm of the OLD school.....My god I'm 58 in 2 weeks, been a mechanic 42 years come march
Auxiliary belt failure on these engines are quite common and shredded belt usually ends up under cambelt cover (ouch...)
There is no Woodruff key. It's locked with one bolt (together with auxiliary belt pulley).
It might not be visible but valves are usually bent and engine will not run properly on low revs. It's better to check sealing before putting everything together.
Archibald wrote:Auxiliary belt failure on these engines are quite common and shredded belt usually ends up under cambelt cover (ouch...)
There is no Woodruff key. It's locked with one bolt (together with auxiliary belt pulley).
It might not be visible but valves are usually bent and engine will not run properly on low revs. It's better to check sealing before putting everything together.
Are you talking about the cam pulley or crank pulley?
I saw this woodruff key with my own eyes, on the cam pulley.
It's as if Renault KNEW lots of them would suffer from cambelt problems. Almost as if they were used to designing cars that would be assembled so badly they''d break at the drop of a hat...
<steve_earwig> I think this forum is more about keeping our cars going with minimal outlay than giving our cars more reason to go bang
He means aux belt, old habits die hard with some of us pensioners 
