Connecting Bucket Cylinder Hoses - Hitachi ZAXIS 450LC-3 Operator's Manual

CONNECTING BUCKET CYLINDER HOSES

d
WARNING:
• Stop the engine. Move the control levers back and
forth, and right and left several times to release
the remaining pressure in the hydraulic line.
• Before connecting the bucket cylinder and the
pipes on the boom with the hoses, loosen bolts
securing the covers to the pipes on the boom to
gradually release the trapped oil pressure in the
pipings. Then, remove the covers.
1. Gradually loosen bolts securing the covers to the ends
of the hydraulic pipings on the boom to release the
trapped oil pressure in the pipings. Then, remove the
covers.
2. Connect two hoses between the hydraulic pipings on the
boom and bucket cylinder.
3. To prevent seals from damage, bleed the air from the
bucket cylinder according to the following procedures.
(1) Start the engine and run it at slow speed.
(2) Slowly extend and retract cylinder rod (1).
(3) Repeat operation in step 2 until cylinder rod (1)
moves smoothly.
ASSEMBLING
6-14
Bucket Cylinder
1
M167-07-018