6-MAINTENANCE
Tighteningtorques
Checkthetighteningtorquesevery250h(afterthebreak-inperiod).
Component
Boltsize
Tighteningtorque
Enginemountingbolt
(frontenginebracket)
3/8-16UNC
54.4–81.6N·m(40.1–60.2lbft)
Enginemountingbolt
(rearenginebracket)
M10×1.25
57.6–73.9N·m(42.5–54.5lbft)
Enginemountingbolt
(bracketframe)
M12×1.75
117.7–137.3N·m(86.8–101.3lbft)
Mainpump
M12×1.75
122.4–165.6N·m(90.3–122.1lbft)
HydraulicSwivel
M10×1.5
53.9–81.4N·m(39.8–60.0lbft)
Swingmotor
M14×2.0
206.0N·m(151.9lbft)
Swingmotor(withparkingbrake)
M12×1.75
122.4–165.6N·m(90.3–122.1lbft)
Swingbearing(upper)
M12×1.75
96.1–154.9N·m(70.9–114.2lbft)
Swingbearing(lower)
M12×1.75
96.1–154.9N·m(70.9–114.2lbft)
TravelmotorM10×1.5
53.9–81.4N·m(39.8–60.0lbft)
Sprocket
M10×1.5
60.8–74.5N·m(44.8–54.9lbft)
Counterweight
M20×2.5
482.8–653.2N·m(356.1–481.8lbft)
Additionalcounterweight
M24×3.0
833.9–1128.2N·m(615.1–832.1lbft)
Operator’sseat
M8×1.25
20–30N·m(14.8–22.1lbft)
6-44