IHI 17VX3 - Boom Lowering with Engine Stopped

OPERATION
BOOM LOWERING WITH THE ENGINE STOPPED
• Method
of Boom Lowering When Engine Damaged
17VX3
Be sure no one is under or the front implements before
manually lowering the boom.
Keep all personnel away from the boom area when
lowering the boom with engine stopped.
Use the following procedure when it
is necessary to lower the
boom while engine
is shut down or the hydraulic system disabled.
1. Remove the floor cover under the operator's station floor.
2. Remove the lock nut ~ of the boom raise relief valve located
inside the control valve
CD.
3. Slowly loosen adjusting screw G) until boom start lower. The
boom will start to lower slowly.
4. After making sure that the front implement has lowered
completely
on to the ground, install the lock nut ~.
5. Make any necessary repairs placing the excavator back into
service.
NOTE: For further information, contact your
IHI dealer.
Boom raise relief valve
3-14-1