2018-01 Addendum 1 Attachment E.pdf

This is Addendum 1 to Request for Bid (RFB) #2018-01 issued by the County of Portage, Wisconsin Purchasing Department for snow and ice equipment to be installed on two new 2018 Western Star 4700 SF truck chassis. The addendum, effective January 17, 2018, provides revised specifications for hydraulic valve components that are integral to the snow and ice removal equipment system. The bid solicitation seeks equipment for two trucks, with specifications detailed in Attachment E covering various hydraulic systems including hoist, wing push arms, scrapers, plow mechanisms, augers, and spinners. The addendum specifically modifies the specifications for Valve 1 and Valve 2 on page 7 of Attachment E to reflect changes in hydraulic pressure relief ratings and operational requirements for key components.

The revised specifications in Addendum 1 establish detailed technical requirements for hydraulic equipment components, including pressure ratings ranging from 400 to 1000 PSI depending on function, proportional flow rates for the auger system at 15 GPM with priority over hoist functions, and spinner specifications at 5 GPM for dual spinners per truck. Notable specifications include double-acting cylinders with relief valves for major functions such as left and right wing push arms and scrapers, zero-leak single-acting components for wing toe functions, and dual motor spools with 1000 PSI relief for wing heel operations. The equipment is designed to work in coordination as an integrated snow and ice removal system on the two Western Star chassis trucks.