Komatsu PC290LC-11 Operation & Maintenance Manual page 230

MACHINE OPERATIONS AND CONTROLS
When returning the mirror to its regular position, perform the
following adjustment.
1.
Adjust stay (1).
Mounting position (2): 71 mm
Mounting angle (3): 89 °
Mounting angle (4): 107 °
Tightening torque of mounting bolt (5): 6.0 to 7.0 Nm {0.61 to 0.71 kgm}
2.
Adjust mirror (6).
Tightening torque of mounting bolt (6): 6.0 to 7.0 Nm {0.61
to 0.71 kgm}
Mounting position (7): 172 mm
NOTICE
• Tighten the right and left bolts of each bracket al-
ternately so that their right and left clearances (R)
and (L) become equal.
• If the mirror and stay mounting bolts are tightened
excessively, the bracket may be damaged. Be sure
to tighten bolts to the specified torque.
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OPERATION