So now that I can comfortably(?) lay under the RV and not get soaked, lets finish up the transmission oil cooler supplemental fan install. You know, that's an awful lot of words to just say "fan." We left off with all the parts assembled and ready to install.
|My Transmission Oil Cooler in The Front Engine Bay|
First I attached the fan itself to the back of the transmission oil cooler. I thought about making it a "pusher" fan rather than a "puller fan" by mounting it on the front, but I believe I will get better airflow by sucking air up from below the front of the engine compartment rather than air from behind the engine and transmission. Once everything is in place, I'll put a temperature probe in there and see what's what.
|Opposite side from the Fan With Sticky Pad and Lock in Place|
|Almost Finished Install - Viewed From Front|
|Tight Install Behind Transmission Cooler|
I had very little clearance behind the transmission oil cooler, and the top of the fan hits the surround of the engine radiator's supplemental fan, but just a very little bit. It also hangs down a smidgen since the fan is actually 10" across even though the specs show it to be 9" wide. If I were to do this again (NOT!) I would buy an 8" fan so the total size would likely be 9". Ah well, at least when you buy a fan you'll get the right one!
|Accessory Switch is Second From Right, Bottom Row|
|Supplied Electrical Install Kit|
Once it's all hooked up, make sure that the fan turns the right way! If it's behind the cooler it should draw air THROUGH it from front to back. If it's in front it should push air through the cooler. If it's wrong, you likely have the wires reversed. On many fans this is the way to reverse the direction anyway so it's not too big a deal if you get it wrong. Just switch the wires at the fan and you're good to go.
WARNING! Some fan manufacturers want you to actually remove the fan blades and turn them over to switch the direction of the airflow. Switching the wires MAY damage this type of fan!
You should use heat shrink tubing or some other method to waterproof the connections that will be outside and usually underneath the RV. They will be subjected to some nasty elements like road salt, water...etc. It's a good idea to protect them. Yes, I know...put the heat shrink tubing on BEFORE you put all the wires together. See even I can learn after several mistakes!
I believe I will see some significant reduction in temperatures. Stay tuned, after the season I'll tally the results and write it all up.
See Part - 1
Be Seeing You...Down The Road,
Rich "The Wanderman"