Using its D51-22 as a design starting point, Komatsu refined the new D61-23 crawler dozer to meet EPA Tier 4 Interim emissions regulations. The SAA6D107E-2 engine generates the same 168 hp as its predecessor, the D61-15, but combining it with new hydrostatic transmission controls reduces fuel use up to 10% in P (power) mode and 20% in E (efficiency) mode.
The Komatsu Diesel Particulate Filter removes most exhaust soot using passive regeneration, minimizing active-regen events. Komatsu says its hydraulic technology actuating the variable-geometry turbocharger and an exhaust gas recirculation valve deliver better precision and longer component life because the simpler components require fewer moving parts.
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Operating weights range from 39,099 lbs. to 41,138 lbs., and the new standard (EX) undercarriage lays a longer track-on-ground footprint. The D61-23 comes with rotary-bushing Parallel Link Undercarriage, which Komatsu says doubles undercarriage life compared to conventional systems.
A new power-angle/tilt blade gets a durable box structure and standard adjustable blade pitch allows the operator to adjust the aggressiveness of the cut. A simple bolt-on completing kit makes the machine ready for Topcon Plug N Play.
Turning sensitivity to operator input on Komatsu's Palm Command Control System and blade response to control movement can be adjusted easily using the in-cab monitor to match operator preferences.
Interior cab noise has been decreased to 76 dB, and heated air-ride seat is is standard equipment. The rear-view monitoring system is also standard, and can be synchronized with reverse operation.
- Steeply hood slope and cab-forward design move operators closer to the blade
- Standard KOMTRAX wirelessly sends machine operating information to a secure website
- Complementary Komatsu CARE scheduled maintenance for three years or 2,000 hours