Posted by Glenn Warner on November 08, 2013 at 17:55:27 from (70.215.12.15):
Hi Guys, Got an 84 GMC General that was originally a tandem axle dump truck ,that was converted to a vacuum pumper/ water truck by a fire dept. We bought it off the fire dept when they upgraded last year to a new pumper/ tanker. we are having trouble burning up the bearings in the vacuum pump.We think the real problem might be a high speed PTO that is over revving the pump.we have 2 other vacuum pumpers which run much slower but still build up vacuum as required. Any ideas or suggestion to try.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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