Smiths heater fan rattle

[jagnut66]

Hi,
My Smiths (old round type) heaters fan rattles when idling (when I speed up the sound goes away) and has done for some time. I just wondered if anyone knows of a fix for this? Are they adjustable or does it simply need tightening up (and how do I do this)? I can take the casing off but can't see a way to rectify this. I have noticed that when I push on the unit with my hand it stops rattling, could it just need packing further back (towards the bulkhead)?
Many thanks in advance for any help / advice.
Mike.

[jagnut66]

I have now wedged this with a piece of ply, it's quiet for now.............

[MarkyB]

Well done, I have cured several rattles using similar methods.

[lambrettalad]

why is it that some things only rattle when you have your hands full driving and the mrs just doesn't have the patience to press where i ask her to (on the car that is )