User manual ZENOAH KOMATSU D31PX-22 BROCHURE

[. . . ] Engine speed is controlled using an electronic fuel control dial. Palm command Proportional Pressure Control (PPC) PPC-controlled palm command joystick provides blade control. Combined with the highly reliable Komatsu hydraulic system, precise control is the result. for increased serviceability and durability. Closed-center Load Sensing System (CLSS) hydraulic system With CLSS hydraulics, blade lever stroke is directly proportional to blade speed, regardless of the load and travel speed. This results in superb fine controllability. Main frame High-rigidity simple main frame structure combined with thick plates and steel castings provide increased reliability and durability. Comfortable ride with cab damper mounting The D31/D37's cab mount uses a cab damper system that provides excellent shock and vibration absorption which conventional mounting systems are unable to match. The silicon oil filled cab damper mount helps to isolate the cab from the machine body, suppressing vibration and providing a quiet, comfortable operating environment. Palm Command Control System (PCCS) The low-effort PCCS joystick controls all directional movements including machine travel speed as well as counter-rotation. Protected travel motors and final drives Travel motors and final drives are mounted within the track One-piece nose guard Simplified high-rigidity structure with thicker plates reduces vibration and noise. Up Shift LH F shoe width for protection from rocks and stumps, and for improving durability. Strong and reliable drive train The HST components have been newly designed to provide higher reliability. Rubber Boot R RH Down Shift Motor cover Also, the new system utilizes a new high efficiency filter and hydraulic cap with a separate breather to minimize contaminates. Silicon oil Spring Photo may include optional equipment. 6 7 D31/D37-22 C R AW L E R D O Z E R CRAWLER DOZER D3 /D37 1 -22 PRODUCTIVITY FEATURES This engine is EPA Tier 3, EU Stage 3A and Japan emissions certified; "ecot3" - ecology and economy combine with Komatsu technology to create a high performance engine without sacrificing power or productivity. MAINTENANCE FEATURES Hydraulically-driven swing-up fan The D31/D37-22 utilizes a swing-up fan with a gas strutassisted lift locking system to provide easy access to the (side-by-side) radiator, oil cooler, and charge air cooler. [. . . ] The fan rotation speed depends on engine coolant and hydraulic oil temperatures; the higher the temperature, the higher the fan speed. This system increases fuel efficiency, reduces operating noise levels, and requires less horsepower than a belt-driven fan. Additionally, cool ambient air is pulled in through perforations in the rear access doors adding to its cooling efficiency. Towing hitch The optional hitch extends past the track to allow maximum angle when towing. Photo may include optional equipment. 8 9 D31/D37-22 C R AW L E R D O Z E R OPERATING WEIGHT (APPROXIMATE) Tractor weight: Including ROPS canopy or cab, rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. 6520 kg 14, 370 lb D31PX-22 (ROPS canopy) . 7320 kg 16, 140 lb D37EX-22 (ROPS canopy) . 6710 kg 14, 800 lb D37PX-22 (ROPS canopy) . 7400 kg 16, 320 lb CRAWLER DOZER D3 /D37 1 -22 SPECIFICATIONS ENGINE Model. 4-cycle, water-cooled, direct injection Aspiration . Turbocharged, air-to-air aftercooled Number of cylinders . 95 mm x 115 mm 3. 74" x 4. 53" Piston displacement. All-speed, electronic Horsepower D31EX/PX-22: SAE J1995 . Gross 60 kW 80 HP @ 2200 rpm ISO 9249 / SAE J1349 . Net 58 kW 78 HP @ 2200 rpm Hydraulic fan at maximum speed Net 53 kW 71 HP @ 2200 rpm D37EX/PX-22: SAE J1995 . Gross 68 kW 91 HP @ 2200 rpm ISO 9249 / SAE J1349 . Net 66 kW 89 HP @ 2200 rpm Hydraulic fan at maximum speed Net 59 kW 79 HP @ 2200 rpm Fan drive type . Hydraulic (reversible for cleaning) Lubrication system Method . Full-flow *EPA Tier 3 emissions certified STEERING SYSTEM Palm Command Control System (PCCS) joystick control for all directional movements. Pushing the joystick forward results in forward machine travel, while pulling it rearward reverses the machine. Simply tilt the joystick to the left or right to make a turn. Tilting the joystick fully to the left or right activates counter-rotation. Hydrostatic Transmission (HST) eliminates steering clutches and brakes, providing smooth powerful turns. Fully electronic control enables smooth control. [. . . ] 27. 4 MPa, 280 kg/cm2 3, 983 psi Hydraulic cylinders . Double-acting, piston type Number of cylinders 2 1 2 Bore 75 mm 2. 95" 90 mm 3. 54" 80 mm 3. 15" Hydraulic oil capacity (refilling): Power angle tilt dozer . gal Control valves: 3-spool control valve for power angle tilt dozer. Raise, hold, lower, and float Blade tilt . [. . . ]