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Thread: Undertray Poll
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post #57 of (permalink) Old 2nd September 2014
Mike H025
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Re: Undertray Poll

It's true! Friend of mine was recently telling me that exact same thing happened to his Megane. It had had new timing belt, then original aux. belt was put back on. Later the aux snapped, smashed the timing belt's lower plastic cover, got inside and jammed the timing belt, which stripped some teeth which in turn then bent all the valves. It's "a recognised Renault thing".

OK so you've taken your cover off. Now imagine finding yourself on a road that has just been resurfaced with new chippings. And you know how these days the contractors leave it to the cars and trucks to steam-roller the loose chippings into a solid layer, instead of using real road rollers. I wouldn't like to risk it.

I think it might have 3 functions actually:

1. shield the belt(s) from chucked-up debris (stones and chippings).

2. sound deadening (environmental noise pollution issue ~ I'm sure somebody somewhere has decided what the max. allowable decibels have to be).

3. (my favourite) to prevent road spray getting into the electronics in the engine bay and the sensors around the engine.

"You can't have everything. Where would you put it?" - Steve Wright
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