5 - 4
Section 3
Routine Maintenance
9803/6020
Section 3
5 - 4
Issue 1
Hydraulics (continued)
Changing the Fluid
1
Prepare the Machine
Position the machine on level ground. Stop the
engine. Remove the starter key.
2
Locate Breather Mounting Plate A and Drain Plug C
These are, respectively, on the top and bottom of the
hydraulic oil tank (see
Identification of Machine
Components
).
3
Release Tank Pressure
(See
Releasing Tank Pressure
)
4
Empty the Tank
a
Remove plate
A
and O-ring
B
.
b
Use a pump to discharge the hydraulic oil into an
empty container.
c
Remove drain plug
C
and drain the remaining oil
from the tank into a suitable drain pan.
5
Renew the Suction Strainer D and Return Filter E
(See
Cleaning/Changing the Suction Strainer
and
Changing the Return Filter
.)
6
Tighten drain plug
C
securely.
7
Refill the tank with the specified oil to the specified
level (see
Fluids and Lubricants - Capacities and
Specifications
).
8
To seal the system, install O-ring
B
and breather
mounting plate
A
.
Note:
If the O-ring is damaged, fit a new one.
9
Bleed air from the hydraulic components (see
Air
Bleeding Procedures
).
10
Start the engine and run it for about 5 minutes
without load. Slowly operate the rams several times
and then carry out step 1 above.
11
Check the hydraulic oil level (see
Checking the Fluid
Level
) and top up if necessary (see
Topping-up Fluid
Level
).
JS08460
B
D
E
A
C
Summary of Contents for JS70
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