Specifications include, but are not limited to: installation of an underbody scraper, front plow, and midmount wing plow on a single axle truck cab & chassis.; A. Underbody Scraper: These specifications are for a Monroe Model HD 4500 12-foot underbody scraper OR EQUAL.; 1. Hanger board: a. Shall be of ½” formed plate steel reinforced by ½” x 7 ½” flatplate to make a full 1” thickness.; b. Shall have 3 ¼” x 0.344” mechanical tube outer hinge tubes.; c. Shall have ¾” bar reinforced on the full length of the hinge.; 2. Hinge Shaft: a. Shall have 2 ½” OD x 96” long with four grease points andthree hinge points.; b. The two outer hinges shall be 3 ¼” OD x 6” long with 0.344wall thickness. Each outer hinge shall have one ½” wrap around gusset, center hinge 3 ¼” OD x 10 ¾” long with a 0.344 wall and have two ½” thick wrap around gussets, including thrust bearing wear plates to prevent side to side shifting of moldboard.; 3. Moldboard: a. Shall be 1” thick x 20” high x 12’ long. Integral pressed in lower offset. Fabricated moldboards with cutting edge bolted to moldboard will not be accepted.; b. The cutting edge shall be ½” x 6” double beveled withstandard highway punches.; B. Front Plow: 1. Shall be slotted to trip one way with 9’ cut, 35” nose height and a 64” discharge height. the mold board is to be of 10-gauge steel.; 2. Shall have seven 1/2” thick, one-piece solid ribs with heavy tubular push frame. Shall have a 1/2” x 8” center punched cutting edge, to have adjustable moldboard pitch, using a stabilizing arm with shear bolt, trip action to be controlled by two adjustable compression springs.; 3. Shall include two swivel snow adjustable caster #6509.; C. Mid-Mount Wing Plow: 1. Wing shall be designed to mount behind the underbody blade, moldboard length shall be 89” at the top and 84” at the bottom, height shall measure 27” inboard and 28” outboard including cutting edge.; 2. Moldboard shall be 3/16” A36 steel; top of moldboard formed into a 3” x 1” channel for additional strength. All seams and joints shall be 100% continuous weld.; 3. Bottom angle shall be ¾” thick, reinforced between the cutting-edge holes. With eight (8) 3”x 3” x ½” gussets. Shall include 3/8” moldboard reinforcement ribs tapered running from the ¾” bottom angle to the top of the moldboard.
