Drain Hydraulic Oil Tank Sump - Hitachi Zaxis 33U-5A Operator's Manual

Drain Hydraulic Oil Tank Sump

--- every 250 hours
d
CAUTION: Hydraulic oil may be hot just after
operation. Wait for oil to cool before starting work.
1. Park the machine following the same procedures as
described on page 7-7 for preparation for inspection and
maintenance.
2. Leave the machine without operating the machine until
hydraulic oil becomes cool. Then, bleed air pressure from
the hydraulic oil tank.
ZX33U-5A, 38U-5A, 48U-5A, 55U-5A
3. Slowly loosen drain plug (1) on the bottom of the
hydraulic oil tank to drain water and sediment.
ZX65USB-5A
3. Loosen bolts (2) of drain valve cover (3). Rotate drain
valve cover (3) to open the checking port. Slowly loosen
drain plug (1) on the bottom of the hydraulic oil tank to
drain water and sediment.
MAINTENANCE
2
7-36
ZX33U-5A, 38U-5A, 48U-5A, 55U-5A
ZX65USB-5A
1
ZX65USB-5A
M1M7-05-024
1
MADB-07-012
3
MADC-07-009
1
MADC-07-010