CASE CONSTRUCTION CX37C, Operator'S Manual

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6 - MAINTENANCE
Tightening torques
Check the tightening torques every 250 h (after the first 50 h during the run-in period).
Component
Bolt size
Torque setting
Engine mounting bolt (engine–bracket) M10 x 1.25 54.2 – 81.3 N·m ( 40 – 60 lb ft )
Engine mounting bolt (bracket-frame) M12 × 1.75 96.3 – 155.9 N·m ( 71 – 115 lb ft )
Radiator mounting bolt and nut
M12 × 1.75
54.2 – 81.3 N·m ( 40 – 60 lb ft )
Engine
Coupling mounting bolt
M12 × 1.75
86.1 – 98 N·m ( 63.5 – 72.3 lb ft )
Main pump mounting bolt M12 × 1.75 74.6 – 112.5 N·m ( 55 – 83 lb ft )
Main control valve mounting bolt M10 x 1.5 54.2 – 81.3 N·m ( 40 – 60 lb ft )
Fuel tank mounting bolt
M12 × 1.75
96.3 – 155.9 N·m ( 71 – 115 lb ft )
Hydraulic oil tank mounting bolt
M12 × 1.75 96.3 – 155.9 N·m ( 71 – 115 lb ft )
Turning joint mounting bolt and nut M10 x 1.5 54.2 – 81.3 N·m ( 40 – 60 lb ft )
Hydraulic
system
Swing motor mounting bolt M14 x 2.0 164.1 – 221 N·m ( 121 – 163 lb ft )
Swing bearing upper mounting bolt
M12 × 1.75
110.8 – 150.1 N·m ( 81.7 – 110.7 lb ft )
Swing bearing lower mounting bolt M12 × 1.75 106.4 – 145.8 N·m ( 78.5 – 107.5 lb ft )
Travel motor mounting bolt M12 × 1.75 125.8 – 145.3 N·m ( 92.8 – 107.2 lb ft )
Power
train
system
Sprocket mounting bolt
M12 × 1.75
108.9 – 132.5 N·m ( 80.3 – 97.7 lb ft )
Carrier roller mounting bolt and nut
M12 × 1.75
108.9 – 132.5 N·m ( 80.3 – 97.7 lb ft )
Under-
carriage
Track roller mounting bolt M18 × 2.0 366.2 – 444.6 N·m ( 270.1 – 327.9 lb ft )
Counterweight mounting bolt M20 x 2.5 482.8 – 653.4 N·m ( 356.1 – 481.9 lb ft )
Cab mounting bolt, nut
M12 × 1.75
127.4 N·m ( 94 lb ft )
Other
systems
Operator’s seat mounting bolt M8 × 1.25 19.7 – 30.8 N·m ( 14.5 – 22.7 lb ft )
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