6-MAINTENANCE
Tighteningtorques
Checkthetighteningtorquesevery250h(afterthebreak-inperiod).
Component
Boltsize
Torquesetting
Enginemountingbolt(engine–bracket)
M10x1.25
54.2–81.3N·m(40–60lbft)
Enginemountingbolt(bracket-frame)
M12×1.75
96.3–155.9N·m(71–115lbft)
Mainpump
M12×1.75
74.6–112.5N·m(55–83lbft)
Hydraulicswivel
M10x1.5
54.2–81.3N·m(40–60lbft)
Swingmotor
M14x2.0
164.1–221N·m(121–163lbft)
Swingbearing(upper)
M12×1.75
110.8–150.1N·m(81.7–110.7lbft)
Swingbearing(lower)
M12×1.75
106.4–145.8N·m(78.5–107.5lbft)
TravelmotorM12×1.75
125.8–145.3N·m(92.8–107.2lbft)
Sprocket
M12×1.75
108.9–132.5N·m(80.3–97.7lbft)
Carrierroller
M12×1.75
108.9–132.5N·m(80.3–97.7lbft)
TrackrollerM18×2.0
366.2–444.6N·m(270.1–327.9lbft)
Counterweight
M20x2.5
482.8–653.4N·m(356.1–481.9lbft)
Operator’sseat(bolt)
M8x1.25
20–30N·m(15–22lbft)
6-43
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