Lull 944E-42 Service Manual - Manual (Page 67)

4-7 944E-42
Cab and Covers
4.3.6 Joystick Assemblies
Refer to Section 8.7, “Valves and Manifolds,” for removal
and installation instructions apply to the front, rear and
frame sway joysticks.
a. Joystick Assembly Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower the boom,
place the travel select lever in the (N) NEUTRAL
position, engage the parking brake and turn the
engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and steering wheel, stating that the machine
should not be operated.
3. Properly disconnect the batteries.
4. Remove the access (1) and console panel (2) in the
cab.
Note: Record the location, and label all hydraulic hoses
to ensure correct installation.
5. Lift the joystick console (3) away from the cab and
label the hydraulic hoses (4) and electrical
connectors (5).
6. Disconnect and cap all hydraulic hoses attached to
the joysticks. Cap all fittings and openings to prevent
dirt and debris from entering the hydraulic system.
7. Remove the capscrews holding the joystick base to
the console and remove the joystick assembly
through the bottom of the console.
b. Joystick Assembly Installation
1. Secure the joystick to the console with the previously
used hardware.
2. Uncap and reconnect the previously labeled
hydraulic hoses to the appropriate locations.
3. Connect the electrical plug (front joystick only).
4. Place the joystick console on the cab and secure it
with the previously removed hardware.
Note: Check the routing of all hoses, wiring and tubing
for sharp bends or interference with any rotating
members, and install tie wraps and /or protective conduit
as required.
5. Install the access panel.
6. Properly connect the batteries.
7. Test all joystick functions for proper performance.
MU3881
2
1
MU5811
4
5
3