RV Daily Tips Issue 512. November 19, 2014 | RV Travel

Be kind to your differential It’s all you’ve got

by Greg Illes
Deep down under your rig, far behind the driver’s seat and usually caked with dirt, grease and road grime, is one of the most critical members of your drive train — the rear axle and its differential.
Whether you drive a motorhome or pull a trailer or fifth wheel, you and your entire load rely on that rear axle to propel you down the road. Every single pony of your engine’s horsepower must route through a compact cluster of incredibly tough gears in order to twist your axles, spin your tires and push you up that hill or across that valley.
Although these units are pretty reliable, they are not maintenance-free. Sure, everybody checks their engine oil, transmission fluid, engine coolant and all the usual “stuff” to keep the beast running. But how often does anyone check the “rear end”?
In our heavily loaded rigs, the differential gets a heavier workout than in any street automobile — really more comparable to a working truck. Tender loving care (TLC) is very appropriate and can take several forms.
Leak checks — There’s no “dipstick” on your differential. The precious gear lube inside is all that keeps those wheels turning. Visually check the axle now and then, both at the center and out at the inside of the wheel hubs. If you see any signs of grease leakage, it means that some of that fluid is gone. Check the fluid level by removing the drain plug and sticking your finger inside; the fluid should be nearly up to the plug hole. If the leakage is any more than a very slight seepage, seals are beginning to fail and it’s time for a serious inspection.
Periodic fluid changes — Check your owner’s manual and be sure to have the rear-end fluid changed at least as often as stated. Run the best fluid you can buy. Most axles love synthetic fluids, but be sure to use a manufacturer-approved product. If you’ve had the axle in extensive dusty conditions or fully underwater, change the fluid right away.
After-market covers — Many axle models have after-market differential covers available. Don’t think that these are just for the hot-rodders or teenagers. These oversized, finned aluminum covers provide for extra fluid capacity, and the fins create additional cooling surface. Your differential fluid, and all your components, will run cooler with this add-on. Cooler is better, and your gears and bearings will thank you.
The bottom line is to be aware of, and sensitive to, the critical work done by that rear axle. Take care of it, and it will continue to take care of you.

About smokeycamping

Well let's see have lived in NY for my whole life, have always loved the outdoors (as long as it is warm out) have always hated the cold, and like a dummy have stayed in NY. But now with my second try my wife, we have been camping now for well over 25 yrs. We currently own a 2010 Cedar creek silverback 35TS and can not wait to get out on the highways and see this great country we all call home. Hope to see every National park before my medical issue becomes too bad to travel. I love my African gray parrot (she is my baby) and have two dogs at the time brother and sister mutts, but love them all the same. Have always been a big Nascar fan, love computers (have a number of certificates to build and work on them) am trying to learn photography, enjoy light hiking, being with good friends and folks. country music, pop music and just being outdoors. So I hope someday to meet some of the great people who like what I like and post out there in some great campground somewhere in the country, till then I will keep posting and I hope you keep liking.

Posted on November 19, 2014, in The world as i see it as a camper and who loves his country and tagged , , , , , , , , , , , , , , , , . Bookmark the permalink. Leave a comment.

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