Good morning I had such a good response to my first question I thought I would throw in my second question on a new topic. I have a 1958 D4 7U42585 I have two fingers the stock four-bladed fan with fan shroud. The previous owner also had the pusher fan which is six blades but it takes a different fan shroud from my understanding.1. Which fan would be better to use in Southern California a push or a poll fan?2. and where would I look for a push your fan shroud since they took different fans rounds depending on if you had a pull or push fan? Also the wire mesh protector that goes over the fan shroud.Thanks again for any input advice or where to acquire these. 

I apologize not too good with the computer hopefully you found my questions buried between the pictures that are duplicated.

Basdas - I can't help you with the specifics of the question, but I would recommend joining up so that you can access the library where you can get to the parts catalogs for these machines. It's well worth the small investment! I have found it very, very helpful.

Thanks for the advice my plan is to join right now I’m spending most of my money supporting Caterpillar and the parts they supply so Get my machine running. But yes my plan is to join thanks for the advice I do appreciate it very much.

Suction fan will make engine run cooler, but hot and dusty for the operator.

I would make sure the rest of the machine is fully functional before worrying too much about the fan type.
It's been my experience that if you have a suction fan and are brush clearing, you need to keep a good eye on the temp guage and have a thin stick or wire to scratch the leaves and twigs out between the #44 hydraulic control and mesh screen every few hours.

Wow, Those are some fresh Track pads..

There’s a screen? Where can I get one? I don’t have that. Where would I get fan shroud for push fan?

Found these part numbers for wire mesh guard
8f7808 and 8f7807

Fan shroud 4f9114 and 4f9113

Thanks

Looking for shield part #

most dozers had push fans to keep the rad clear. any farm crawlers that worked grain crops tended to have push fans for the same reason.

most modern large farm tractors have reversible fans some are automatic being electrically driven so they simply use a timed relay to stop and reverse the fan. others are mechanical.

its important to regular clear the rad when working in dry, dusty, muddy and leafy conditions many farmers have lost machines due to fires from dirt and vegetation build up around radiators and transmissions.
dont use wire or sticks to clear the rad to big a risk of puncturing the core. use a hose or compressed air instead. old refillable water fire extinguishers are good for this you can charge them with water and air or just air. the uncle worked for a bailing contractor they always had a couple filed with water when they were working in dry conditions.