9 dual joystick, Dual joystick – Lull 944E-42 Service Manual User Manual

Page 185

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9-27

944E-42

Electrical System

4. Label and disconnect the wire harness connector

plug (1) on the solenoid valve (2) to be replaced.

5. Remove the solenoid valve and replace.

d. Installation

1. Install the solenoid valve along with the retaining

bracket and capscrew.

2. Connect the wire harness connector plug to the

solenoid connector plug.

3. Properly connect the batteries.

4. Close and secure the engine cover.

5. Test the operation of the transmission. Verify that

each function works properly, that the transmission
does not engage when in NEUTRAL (N) and that the
proper indicators illuminate on the front dash panel.

For further transmission information, refer to Section 6,
“Transmission.”

9.11.9

Dual Joystick

This machine is equipped with three separate hydraulic
joysticks.

a. Front Joystick Button Testing

1. Remove the access panel from the side console.

2. Disconnect the cab wire harness connector plug (3)

from the joystick connector plug (4).

3. Check the cab harness connector plug (3) with a

DMM for battery voltage. Place the negative (-) lead
on pin B and the positive (+) lead on pin A, and test
for battery voltage.
If battery voltage is not present, the wiring harness is
suspect and should be replaced. If battery voltage is
present, the harness is functioning properly.

4. If the harness is functioning properly, test the joystick

button (5) for continuity. With the joystick button
pressed down, test across the two pins inside the
joystick connector plug for continuity and shorting. If
there is no continuity, replace the joystick handle.
Refer to

Section 4.3.6, “Joystick Assemblies.”

b. Front Joystick Handle Replacement

MU3991

1

2

MU4091

4

3

MU4161

5

12

6

7

8

9

10

11

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