A sand storm of PM.High winds, lots of dust, deserts of sand, hot days and cool nights. You might want to keep these conditions in mind before the next sand storm hits. Tank Drain Again It's no secret that temperature changes, like cool nights and real hot days, increase condensation in the excavator's air brake air brake: see brake. air brake Either of two kinds of braking systems. The first, used by trains, trucks, and buses, operates by a piston driven by compressed air from reservoirs connected to brake cylinders (see piston and cylinder). system. Condensation leads to corrosion and brake failure Noun 1. brake failure - brakes fail to stop a vehicle equipment failure, breakdown - a cessation of normal operation; "there was a power breakdown" . Drain water out of the air tanks before the day's run by pressing the drain valves on the front air tank, then on the centerline cen·ter·line n. 1. A line that bisects something into equal parts. 2. A painted line running along the center of a road or highway that divides it into two sections for traffic moving in opposite directions, or, in the case of and rear reservoir tanks. Press drain valves on front of air tank, centerline, and rear reservoir tank Expansion Tank The coolant coolant (kōō´l  nt),n level in the excavator's expansion tank is often overlooked--and in some cases just completely forgotten. That's because the tank is under the doghouse inside the vehicle's cab. When coolant gets low, the engine overheats. It could seize up and leave you stranded. That's the last thing you need in the desert! Your PMCS PMCS PMC Sierra (stock symbol) PMCS Project Management Control System PMCS partial mission-capable, supply (US DoD) PMCS Preventive Maintenance Checks & Services PMCS Professional Military Comptroller School in TM 5-2420-224-10 tells you to keep the expansion tank half full. There's no marking on the tank that shows where the level should be. Do your excavator's cooling system cooling system: see air conditioning; internal-combustion engine; refrigeration. cooling system Apparatus used to keep the temperature of a structure or device from exceeding limits imposed by needs of safety and efficiency. a real favor. Mark the tank with a permanent marker A permanent marker is a type of marker pen that is used to create permanent writing on an object. Generally the liquid is water resistant, contains the toxic chemical xylene or toluene, and is capable of writing on a variety of surfaces from paper to metal to stone. . Label the tank at one-half and three-quarters full. This means no more guesswork. Just add coolant when the tank's below half full. Air Filters Clean air filters are crucial for the excavator's smooth operation--especially in the desert. Start by squeezing the dust cap on the bottom of the air canister. Do this before the day's run. This gets rid of only the sand and dust at the bottom of the canister, but not from the primary or secondary air filters. Sand that's left in the canister will end up in the filters--causing them to clog up. Keep an eye on the air cleaner indicator lamp on the dash. When it lights up, call in your mechanic for service. Mechanics, give the filter the brush off when the operator notices a loss of engine Do not remove or clean the inner (safety or secondary) filter. Tap the primary filter with the heel of your hand to loosen sand, then shake and tap some more. This quick PM tip works well at the work site until the primary filter can be cleaned or replaced. Whatever you do, do not operate the excavator ex·ca·va·tor n. An instrument, such as a sharp spoon or curette, used in scraping out pathological tissue. excavator (eks´k without both filters in place. And make sure you don't bang the filter on a rock or hard surface. That only dents the filter so it won't fit back properly. |
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