MAINTENANCE 17. Retighten the travel device mounting bolts. Tool : 32 mm Torque: 750 N•m (75 kgf•m, 553 lbf•ft) Retighten the travel reduction device cover mounting bolts. M164-07-005 Tool : 24 mm Torque: 270 N•m (27 kgf•m, 199 lbf•ft) Retighten the sprocket mounting bolts. M1G6-07-007 Tool : 32 mm Torque: 750 N•m (75 kgf•m, 553 lbf•ft) 18. Retighten the upper roller mounting bolts. M154-07-050 Tool : 27 mm Torque: 400 N•m (40 kgf•m, 295 lbf•ft) M157-07-224 7-99