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Feed Mixer Maintenance Matters

November 1, 2012
By: Kim Watson Potts, Beef Today
p6 Mixer Maintenance Matters 4

Fall TMR Mixer Maintenance

Anyone who feeds cattle knows that the mixer, whether mounted on a truck or pulled behind a tractor, is an important part of getting the ration fed. Joe Kagay is on his fourth feed truck for his family’s 1,000-head yard in northwest Missouri. Currently he uses a 2005 model Harsh 375 four-auger box mounted on a 1992 International 4900 fourwheel-drive, and expects that he can get more life out of it.

"We try to do a complete service on the box monthly and watch for developing problems daily," he says. The time spent on maintenance is probably not more than two hours per month, but over the years, he’s seen the addition of higher-moisture coproducts in feed rations add to the wear and tear on feeding equipment.

Equipment manufacturers are aware of it, too. They have adjusted to account for this trend, which is likely to continue as long as corn prices remain high.

"We have seen a large increase in the use of coproducts being used and run through our TMR mixers over the past few years," says Tim Osterhaus of Kuhn North America.

"The mixer manufacturing industry has responded to this trend with changes and updates to the equipment in order to mix these materials faster and more efficiently, and have added strength to the machines in order to handle those heavier materials."

Even if a new feed mixer isn’t in the cards this year, as with Kagay, there are some maintenance tips farmers can use to help extend the life of any type of feed mixer.

Grease. Keep bearings well-greased, especially those that have direct contact with the mixer body, since moisture from the feed can work its way through to bearings. The more grease in the bearing, the better it is protected, Osterhaus says. The same holds true for gearboxes and other rotating parts that have direct contact with the feed. Make sure oil levels are correct and that oil in the gearbox and chain case gets changed at the correct intervals.

This will ensure that the oil is clean and not being contaminated. Also, take care of leaking seals so moisture does not damage any external parts, says Matthew Digman, an agricultural engineer at the University of Wisconsin.

"Regular maintenance grease points on TMR mixers generally include universal joints, driveline bearings, and door guides and linkages. If your machine relies on grease lines, take some time to follow each one to its delivery point. Check both lines and fittings for leaks. There are also a few yearly grease point jobs on these machines, such as repacking wheel bearings and load cell mounting tubes," Digman explains.

Chains. First, clean off any dirt and grease that may have accumulated. Dirt-laden grease can be highly abrasive, causing unnecessary wear to the drive components, Digman says. "While cleaning these areas, take a moment to check sprockets for excessive wear or for evidence that the chain has not been riding properly on the sprocket," he says."These signs could indicate a misaligned sprocket, excessive chain elongation or simply the need to adjust the chain tightener."

Knowing that mixing feed creates a dusty environment, some manufacturers opt for automatic oilers or partial submersion of the chain in an oil bath. This is the type of equipment that Kagay uses, but he admits he doesn’t change the oil very often.

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FEATURED IN: Beef Today - November 2012
RELATED TOPICS: Beef, Machinery, Cattle, Feedyard

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