Equipment World Digital Magazine
Issue link: http://read.dmtmag.com/i/620628
ments this machine uses selective catalytic reduction (SCR) and a diesel oxidation catalyst (DOC) but does not require the use of a diesel par- ticulate filter (DPF). Manufacturers try to avoid DPFs when possible because they require regeneration to burn off soot that collects inside the filter. With the DPF-free design, the soot is burned up in-cylinder and these problems are avoided. KCMA used Isuzu en- gines on the Tier 4 Interim version of the 90Z7, but returned to their traditional supplier Cummins for the Tier 4 Final version. The new engine is a Cummins QSL9 that pumps out 275 net horse- power. The SCR system requires diesel exhaust fluid (DEF), and KCMA says DEF consumption for the Cummins is about 3 percent of fuel burned. The upside to the SCR system is that fuel efficiency improves about 5 percent and the Tier 4 Final engines have a better transient re- sponse than Tier 4 Interim, meaning the engine revs up quicker when you increase the throttle. The 90Z7 wheel loader got more than just a new power plant. A high efficiency, 5.5-cubic-yard bucket design increases penetration and material retention. A flex-shift feature balances speed and rimpull to main- tain tractive effort and improve cycle times. And a standard lock-up torque converter in second, third and fourth gear helps conserve fuel and improve hill-climbing performance. When you need a burst of extra power the 90Z7 offers a temporary power boost function that can speed up cycle time whether you are using normal or power modes. The flex- shift feature also assists in improving cycle times. With increased sensors, and new logic, the loader's "Intelli- dig" system responds to the working conditions and balances the proper speed and rimpull to optimize dig- ging performance. New 67Z7 wheel loader With the goal of improving fuel effi- ciency and optimizing performance, KCMA also completely redesigned its 67Z7 wheel loader. The new machine puts power to the ground with a hydrostatic transmission and a Tier 4 Interim, 152-horsepower Isuzu diesel engine. The hydrostatic transmission and inching pedal allow for creep control giving you precise, slow speed work in first gear even when the machine is running full throttle. Limited slip differentials are stan- dard with internal planetaries and dual circuit wet brakes. The Z-linkage design 67Z7 can be outfitted with a 3.1-cubic-yard general-purpose bucket or a 3.5-cubic-yard material- handling bucket. Task Masters With their quick coupler attachment systems, the new 67TM7 and 70TM7 Task Master Toolcarriers use parallel linkage ideally suited for fork ap- plications. The 67TM7 gets a 2.8-cubic-yard coupler bucket or a 3.1-cubic-yard pin-on general-purpose bucket and a four speed, hydrostatic drivetrain. It reaches 5 inches higher at the hinge pin than its sister Z-linkage machine, the 67Z7. The hinge pin on the 70TM7 tops out at 8 inches higher than its Z- linkage equivalent. You can spec the 70TM7 with either a 3.4-cubic-yard coupler bucket or a 3.7-cubic-yard pin-on general-purpose bucket. The 70TM7 also has what the company says is the simplest emissions system in its class with no SCR and no DPF. EquipmentWorld.com | January 2016 57 KCMA is now offering a Preview object detection system option on its Kawasaki-KCM loaders that warns operators when anything enters a blind spot behind or to the sides of the machine. It uses pulse radar technology that detects both stationary and moving objects. KCMA went back to its traditional engine supplier Cummins for its Kawasaki-KCM 90Z7 machine. The blue cap indicates the DEF reservoir, a requirement for the Tier 4 Final engine on the 90Z7.