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Message: <blockquote data-quote="Brian Ong" data-source="post: 1518" data-attributes="member: 37">Thanks <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /> It does have a ambulance fan fitted somewhere in the middle section of the van. The protuding circular thing that you see on the roof is actually the fan. It is operated by a switch in the van on the right panel. It not only allows the paramedic to expel bad air, it also allows works in reverse and sucks in fresh air. The 2nd pulley runs the air conditioning unit. Robs the engine of some horsepower. But it's a neccessary thing here in the tropics. The engine bay would also be neater without it. Some people here are not content with "only" 2 pullleys, they will fit in power steering .... that makes it 3 pulleys running off the crank!! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /> i perfer non power steering anytime .. lolCheersBrian Ong</blockquote>