Aggregates Manager Digital Magazine
Issue link: http://read.dmtmag.com/i/853705
24 AGGREGATES MANAGER / August 2017 EQUIPMENT MANAGEMENT opportunity to give it an inspection for any cracks and use the maintenance tool to check the top angle. Also, check the retainer pins for wear and/or damage. Next, check the breaker's bushing. "The maintenance tool is inserted into the bush- ing, and if it can be turned flat so that it fits end-to-end inside the bushing, the bushing needs to be replaced," Smith says. "This sim- ple check takes approximately 15 to 30 min- utes and should be conducted once a week or every 50 hours of attachment use." "Any wear on the bushing can affect tool performance and should not be overlooked," he adds. "Bushing wear will allow front to back play in the breaker tool and can cause mis- alignment to the piston." Tip No. 3: Examine hydraulic hoses Hydraulic hoses from the excavator should be the correct length and always be routed properly to help decrease wear and poten- tial downtime. According to Smith, hoses that are short in length restrict attachment exten- sion. On the flip side, hoses longer in length can catch or become disengaged on rebar and other debris. Doosan breakers come with standard hydraulic hoses that are the correct length for each of their machines to make in- stallation easy and maximize operating time and hose protection. Tip No. 4: Grease the attachment Greasing the hydraulic breaker is the most im- portant maintenance item because it lubricates and clears the tool bushing area of debris. Use a No. 2 lithium-based grease with 3 percent moly rated to 500 degrees Fahrenheit to help prevent metal-on-metal contact. Compared to standard lubricants, the grease is made for higher tem- peratures and remains between the steel and bushings at higher temperatures, providing for better and longer-lasting lubrication. Greasing can be done manually or via an automatic greasing system. If using a hydrau- lic breaker that needs to be manually greased, make sure to follow manufacturer recommen- dations — typically every 1 to 2 hours — to re- duce buildup, tool wear, and bushing wear. Some manufacturers feature an automatic lubrication (greasing) system for their hydraulic breaker models that delivers a constant flow of grease and eliminates manual greasing inter- vals. According to Smith, the lubrication system Before daily use, inspect the hydraulic breaker for wear and tear. Look for any worn or damaged components. Features: • Cast Iron • Class F Insulation • Roller Bearings • Ironclad Warranty • Severe Duty FREE SHIPPING IN CONTINENTAL US CONVEYOR MOTORS, COMPRESSOR MOTORS, VFDS, GEAR REDUCERS & MORE CRUSHER DUTY MOTORS at ROCK BOTTOM PRICES! .COM Free Gift! See Other Side for Details or Call 800-760-2065 Sign up for Special Offers at electricmotors.com/cooler1 or call 800-760-2065 and we'll send you a FREE LUNCH COOLER at no charge. Untitled-21 1 6/14/17 10:40 AM