Lull 944E-42, Service Manual

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Cab and Covers
4.18 Model 644E-42/944E-42 Rev. 6/04
4.3.8 Front, Rear and Frame Sway Joystick
Assembly Replacement
a. Front, Rear and Frame Sway Joystick Assembly
Removal
1. Park the vehicle on a firm, level surface. Level the
vehicle, ground the attachment, place the travel
select lever in the (N) NEUTRAL DETENT position,
engage the parking brake switch and shut the
engine OFF.
2. Unlatch and open the engine cover. Allow the
hydraulic fluid to cool.
3. Remove the capscrews and washers (1) securing
the right side access panel (2) and joystick mounting
console (3).
4. Lift the joystick console (4) away from the cab and
label the hoses (5) and electrical connector (6).
5. Disconnect and plug the hydraulic hoses (5) and cap
the fittings (7) on the valve (8).
6. Unplug the electrical connector (9) (front joystick
only).
Note: The rear and frame sway joysticks do not have
electrical features.
7. Remove the four capscrews (10) on the front or rear
joysticks and/or two flat washers and two capscrews
on the frame sway joystick.
8. Remove the joystick assembly (11) through the
bottom of the console (4).
Note: For further joystick handle replacement
instructions, see Section 9.14.10, b. “Front Joystick
Handle Replacement.” For joystick valve disassembly
instructions see Section 8.12.3, “Joystick Valve (Dual
Joystick).”
WARNING:
Hot hydraulic fluid can
cause severe burns. Wait for hydraulic fluid to
cool before servicing any hydraulic
component.
MU3880
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WARNING:
Hydraulic fluid leaking under
pressure can penetrate the skin, cause infection,
gangrene, and death or serious personal
injury. If injured, see a doctor immediately.
Relieve all pressure before disconnecting any
component, part, line or hose. Slowly loosen
parts and allow release of residual pressure
before removing any parts or component.
MU5810
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