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 - Diagnosing Engine Difficulty - Diesel Tractors - by Staff. The following suggestions are listed for your assistance. You can make simple adjustments on your tractor that will improve its operation and save you the time and expense of hiring someone to do it for you. Always make one adjustment at a time, and if the adjustment made does not improve the condition, return to the original setting before proceeding to the next adjustment. Hard Starting Cold air temperatures. Insufficient fuel.
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