UNDERCARRIAGE / Track Adjuster Disassemble Track Adjuster Use a pump unit which has the maximum pres- sure of 69 MPa (700 kgf/cm 2 , 9950 psi) and the flow rate of 8 to 10 liters (2.1 to 2.6 US gal). Set the main relief pressure to 49 MPa (500 kgf/cm 2 , 7110 psi) (80 tons) or lower. IMPORTANT: Compress the spring until the clear- ance between bracket (12) and nut (13) is approximately 10 mm (0.4 in). 2. Loosen valve (16). Compress spring (11) of the track adjuster by using special tool (ST 4932). IMPORTANT: Use special tool (ST4932) when as- sembling and disassembling the track adjuster. : 24 mm Clearance 10 mm (0.4 in) CAUTION:
As the spring force of track ad- juster is extremely large, carry out the dis- assembly and assembly work carefully. Thoroughly inspect the special tool for any damage in order to perform the work safely. 15 CAUTION: Track adjuster weight: ZAXIS450-3, 470H-3: 235 kg (518 lb) ZAXIS450LC-3, 470LCH-3: 239 kg (527 lb) ZAXIS500LC-3, 520LCH-3: 365 kg (805 lb) 1. Hoist and place the track adjuster on the rest of special tool (ST 4932). 16 W142-03-04-020 IMPORTANT: Put the matching marks on rod (15) and nut (13). 3. Remove valve (16) from rod (15). Track Adjuster : 24 mm 4. Remove bolt (14) from nut (13). Remove nut (13) from rod (15). : 17 mm, 100 mm W142-03-04-019 W3-4-5 12 13 14 T 4932 Rest