Lull 944E-42 Service Manual User Manual download pdf (Page 53)

100

101

3.5

Model 644E-42/944E-42 Rev. 6/04

Boom

6. Loosen the extend chain locknut (10), located at the

rear of the outer boom (11), half way. The locknut

must remain fully engaged on the threads of the

extend chain clevis.

7. Return to the cab, fasten your seat belt and start the

engine. Retract the boom slightly until slack is

noticed in the extend chain. Shut the engine OFF.

8. Move the attachment tilt joystick in both directions to

relieve any trapped pressure in the attachment tilt

system. Move the auxiliary hydraulic joystick in both

directions to relieve any trapped pressure in the

auxiliary hydraulic system.

9. Place an Accident Prevention Tag on both the

ignition key switch and steering wheel, stating that

the vehicle should not be operated. (Refer to Section

1.5, “Accident Prevention Tag Usage.”)

10. Unlock and open the engine compartment cover.

Allow the engine, transmission and hydraulic fluid to

cool before proceeding.

11. If the vehicle has dual batteries, disconnect both

negative battery cables (12 and 13) from both

batteries.

To access the lower battery (14), loosen the knob

(15) far enough so that the lip (16) on the upper

battery box clears the knob. Lift up the upper battery

box (17) and swing it out, so that the box clears the

hydraulic tank support bracket, to gain access to the

lower negative battery cable (12). Disconnect the

lower negative battery cable.

12. Remove two retaining rings (18) and clevis pin (19)

to disconnect the extend chain yoke (20) from the

outer boom. Lay the chain assembly flat against the

inner boom (21).

MU0180

MU0650

MU0210

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Lull 944E-42 Service Manual User Manual Page 53

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