SECTION 3 UNDERCARRIAGE — CONTENTNS — Group 1 Swing Bearing Group 4 Track Adjuster Remove and Install Remove and Install Track Adjuster.........W3-4-1 Swing Bearing ........................................W3-1-1 Disassemble Swing Bearing ..................W3-1-4 Assemble Track Adjuster........................W3-4-6 Group 5 Front Idler Disassemble Track Adjuster...................W3-4-2 Assemble Swing Bearing .......................W3-1-6 Group 2 Travel Device Remove and Install Travel Device..........W3-2-1 Remove and Install Front Idler................W3-5-1 Disassemble Front Idler..........................W3-5-2 Disassemble Travel Device....................W3-2-4 Assemble Front Idler ..............................W3-5-6 Assemble Travel Device.......................W3-2-10 Maintenance Standard..........................W3-5-10 Group 6 Upper and Lower Roller Disassemble Travel Motor....................W3-2-18 Assemble Travel Motor ........................W3-2-22 Disassemble Brake Valve ....................W3-2-28 Remove and Install Upper Roller............W3-6-1 Assemble Brake Valve .........................W3-2-30 Remove and Install Lower Roller............W3-6-4 Maintenance Standard .........................W3-2-32 Group 3 Center Joint Disassemble Lower Roller......................W3-6-8 Assemble Lower Roller.........................W3-6-10 Maintenance Standard..........................W3-6-12 Group 7 Track Remove and Install Center Joint ............W3-3-1 Disassemble Center Joint ......................W3-3-4 Assemble Center Joint...........................W3-3-6 Remove and Install Track .......................W3-7-1 Maintenance Standard............................W3-7-7 1V7W-3-1