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Summary of 580K Improvements
Main Frame
□ Two main frames (integral or detachable backhoe)
□ Box-section unitized main frame
□ Built-in fuel tank
□ Integral hydraulic reservoir
□ Common chassis for two- and four-wheel drive
Engine Area
□ Double front engine mount
□ Tilting engine hood
□ Rubber front hood bumper
□ Sound and heat curtain
□ Under-hood engine muffler
□ Improved air-cleaner servicing
□ Optional precleaner
□ Wide-open fuel-fill port
□ 4 percent larger radiator
Electrical Area
□ System protected by blade-type automotive fuses
□ Sealed and self-locking wire connectors
□ Large standard battery box
□ More standard ROPS canopy lights
□ Additional cab lights
□ Improved return-to-dig proximity switch
Transmission Area
□ Improved transmission disconnect location
□ Improved transmission shift-lever location
Axle Area
□ Top trunnion-mounted steering axle
□ Improved four-wheel-drive front axle
□ Improved steering design
□ New steering system hydraulic oil supply
□ 2-inch (51 mm) longer wheelbase
□ Increased front wheel tread
□ Improved front axle vertical wheel travel
□ Clearance for rear tire chains
□ See-through brake reservoir
□ Brake reservoir oil-level warning light
Hydraulic System
□ Improved hydraulic system flow
□ 13 percent loader-pump capacity increase □ 10 percent increase in backhoe-pump flow
□ 4 percent increase in main relief pressure
□ Only one main relief valve
□ Cast-iron hydraulic pump
□ Improved hydraulic pump coupler
□ 68 percent larger capacity hydraulic reservoir
□ 55-mesh suction screen
□ Hydraulic reservoir clean-out holes
□ Hydraulic reservoir sight gauge
□ Large hydraulic reservoir fill port
□ 10W/30 hydraulic fluid
□ Relocated hydraulic oil filter
□ Larger hydraulic oil cooler
□ Improved hydraulic cooler fittings
□ Integral cooler charge relief and oil filter
□ Improved hydraulic pump outlet hose
□ Bolt-on split flanges
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