8.19
3507, 3508, 3509, 3512, 3513, 4007, 4008, 4009, 4012, 4013
Hydraulic System
8.9.6
General Cylinder Installation
1. Grease the bushings at the ends of the hydraulic
cylinder. Using an appropriate sling, lift the cylinder
into it’s mounting position.
2. Align cylinder bushing and install pin, lock bolt or
retaining clip.
3. Connect the hydraulic hoses in relation to the labels
or markings made during removal.
4. Before starting the machine, check fluid level of the
hydraulic fluid reservoir and if necessary, fill to full
mark with Mobilfluid 424
®
ISO Grade 46.
5. Start the machine and run at low idle for about one
minute. Slowly activate hydraulic cylinder function in
both directions allowing cylinder to fill with hydraulic
oil.
6. Inspect for leaks and check level of hydraulic fluid in
reservoir. Add hydraulic fluid if needed. Shut the
engine OFF.
7. Wipe up any hydraulic fluid spillage in, on, near and
around the machine, work area and tools.
8.9.7
Cylinder Pressure Checking
Attach a 345 bar (5000 psi) gauge to the test port on the
main control valve to check the system pressure.
Note:
If a hydraulic cylinder pressure is greater than the
main control valve pressure, increase the main control
valve pressure by adjusting the main relief. Generally,
one half turn clockwise will be adequate to check an
individual circuit. Activate the circuit and if pressure is
obtained, turn the main relief counter clockwise one half
turn. Recheck the main relief setting and adjust if
necessary.
8.9.8
Steering Cylinders
The steering cylinders are attached to each axle center
housing. The steer cylinders are covered in the
appropriate Dana-Spicer axle literature.
