Page 196 - Peterson 85 Years and Going Strong

Oregon is the number one timber producing state in the country. That’s why forestry is so important to us.
– Duane Doyle Jr., president of Peterson’s Earthmoving Division (February 2020)
Top to bottom: D5 dozer vs 517 skidder; Cat 527 working in the woods; Duane Jr. with Chris Harbeson & the TSK at Family Fun Day in Hillsboro, 2018
2017. And in October 2019, the last of the TSKs— TS500119—rolled out of Peterson’s Portland East Campus shop. Altogether, there were twenty, in- cluding the prototype.
BUILDING A PROTOTYPE
The purpose behind the TSK project was to make a very popular machine Tier 4 compliant, and therefore useable in the United States. “We decid- ed on the C7.1 Tier 4 final engine,” explains Grant Stickney, Peterson’s emissions control specialist, who was heavily involved in the project. “In the beginning, we used the latest 3D modeling tech- nology available and old-school cardboard tem- plates to determine if certain things could be done. We used everything available to us.”
Ultimately, the TSK team would:
• lengthen the mainframe and c-frame for the dozer by 6.5-inches
• expand the engine enclosure to accommo- date the new, much larger engine and cooling package
• install an emissions package
• relocate the batteries in a custom enclosure
• add an electronic display in the cab to moni- tor the engine
194 | PETERSON: 85 YEARS AND GOING STRONG