Komatsu D155A-6 Operation & Maintenance Manual page 156

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OPERATION
CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL
When removing the oil filler cap, oil may spurt out, so stop the engine
and wait for the oil temperature to go down, then turn the cap slowly to
release the internal pressure before removing the cap.
If oil has been added to above the H mark, stop the engine and wait for
the hydraulic oil to cool down. Then remove drain plug (P), loosen drain
valve (1), and drain the excess oil.
1. Lower the blade and ripper completely to the ground, stop the
engine, wait for approx. 5 minutes, then check that the oil level
is between the H and L marks on sight gauge (G).
NOTICE
If the oil level is above the H line, do not add oil. Doing so may lead to
damage to the oil pressure circuit and spouting out of oil.
2. If the oil level is below the L line, add oil through oil filler (F) at
the top of the hydraulic tank.
REMARK
When inspecting, if the machine is at an angle, move it to a level
place to carry out the check.
WARNING
OPERATION
3 - 105

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