Lull 944E-42 Service Manual - Manual (Page 145)

8-29 944E-42
Hydraulic System
Note: Check for leaks, and repair as required before
continuing. Add hydraulic fluid to the reservoir as
needed.
8. Wipe up any hydraulic fluid spillage in, on, near and
around the machine, work area and tools.
9. Install the lower dash panel.
10. Close and secure the engine cover.
8.7.10 Brake Test
Carefully bleed the brake lines as soon as the brake valve
is installed in the machine. Air in the system will not allow
the brakes to apply properly. There are two brake bleeder
locations on each axle. Work with an assistant to perform
this procedure.
1. Place the travel select lever in (N) NEUTRAL,
engage the park brake, and start the engine.
2. Have the assistant frame sway the machine full left
to expose the brake bleeders on the right front and
right rear axles.
3. Remove the plastic cap from the brake bleeder (5).
Attach one end of a length of transparent tubing over
the brake bleeder. Place the other end of this tubing
in a suitable transparent container that is partially
filled with hydraulic oil. The end of the tubing must be
below the oil level in the container.
4. DO NOT open the brake bleeder without holding the
tubing firmly on the bleeder. There is pressure at the
brakes. Carefully open the bleeder with a 12 mm
wrench. Have the assistant depress the brake pedal.
Close the brake bleeder when air bubbles no longer
appear in the oil. Release the brake pedal. Remove
the tubing from the brake bleeder.
5. Repeat Steps 3 and 4 for the right rear brake
bleeders.
6. Frame sway the machine full right to expose the
brake bleeders on the left front and left rear axles.
7. Repeat steps 3 and 4 for the left front and left rear
brakes.
8. Conduct a pressure and function check of the
service brake. Refer to Section 8.4.1, “Hydraulic
Pressures.”
8.7.11 Power Steering Valve
The power steering valve (1) is located at the base of the
steering wheel shaft, concealed by the lower dash cover.
The valve is not serviceable and must be replaced in its
entirety if defective. For detailed information refer to
Section 4.3.1, “Steering Column and Steering Valve.”
MU6870
5
MU3251
1