Komatsu GD555-5 Operation & Maintenance Manual page 238

OPERATION
WHEN LOWERING THE RIPPER OR SCARIFIER
(If equipped)
1. Slowly loosen the pressure releasing plug (1) in the control
valve.
2. Lower the ripper or scarifier to the ground.
3. Tighten the pressure releasing plug (1).
Tightening torque: 19.6 to 24.5 Nm (2.0 to 2.5 kgm, 14.5 to
18.1 lbft)
WHEN LOWERING THE FRONT BLADE
(If equipped)
1. Slowly loosen the pressure releasing plug (1) in the control
valve.
2. Lower the front blade to the ground.
3. Tighten the pressure releasing plug (1).
Tightening torque: 19.6 to 24.5 Nm (2.0 to 2.5 kgm, 14.5 to
18.1 lbft)
TROUBLESHOOTING
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