payloader fan direction

[Tomin indy]

Hi, this may be a dumb question, but, in a payloader I have with the engine in the rear, should the airflow through the radiator be blowing out the back of the machine or sucked in? The reason I ask is it runs hot, everything is clean and I wondered if the fan could have been put on backwards. I now on all my other equipment the fan sucks in but the engine is in the front. Thanks in advance.
Tom

 

[Chuck Hilton]

Tom,
It could be correct in either direction. There were even fans offered that were reversable. That way in the summer you could blow the heat away from operator and winter toward the operator.
Chuck

 

[VaTom]

Tom, my Cat 944 blows air out the rear. I've worked the heck out of her, runs nice and cool in our Va summers.

Sounds like you have a different problem.

 

[AJ.]

Turning a fixed blade fan will not alter the direction of the air flow but it will alter the efficiency if the blades are slightly concave as most fans are,if your fan blows out the concave side of the blades should face the rad,if it sucks in they should face the engine,first check for any air bubbles in the coolant when the engine is hot and on low idle,if there are bubbles it would point to compression leaking into the coolant,ie head gasket crack etc,sometimes rads can be blocked with fine dust that cannot be seen,I use a road compressor to blow them out,don"t overlook the inside of the rad it can get clogged up too,if you are near a water hose it might help to backflush it,if you got a heater take the hose off that is near the thermostat and block it,connect a water hose to the nipple,remove the rad cap,turn on the water supply and let it flush away,the thermostat will stop the water from going into the top of the rad and it will be forced through the bottom hose and out the top,when it come clear try it again,don"t overlook the thermostat either.
Good luck
AJ

 

[Tom B (tbone)]

Thanks guys for all the ideas!
Tom

 

[Anonymous-0]

I had a case track loader with a reversable fan. when i was clearing land in dusty conditions or especially when i was working pushing up burn piles, i always had it blowing "out", through the radiator and out the grill. it kept the radiator fins from getting clogged and kept the hot embers being sucked in to the engine compartment. never had a problem overheating.