Lull 944E-42 Service Manual User Manual download pdf (Page 88)

100

101

Boom

3.40

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

4. At the rear of the inner boom (1), remove one

capscrew (2) and washer (3) securing the extend

chain (4) to the anchor link (5). Disconnect the

retract chain.

Note: The Extend Chain yoke (8) will not fit under the

chain sheave.

5. Remove two retaining rings (6) and clevis pin (7) to

disconnect the extend chain yoke (8) from the outer

boom (9). Lay the chain assembly flat against the

inner boom (10).

IMPORTANT: Chains and clevis’ are wear items and

experience the same stress. DO NOT attempt to repair a

chain. Replace a stretched or damaged chain with a new

part.

6. Remove the capscrew (12) and locknut (13) and

remove the sheave pin (15). Remove the

sheave (14) from the outer boom.

7. Attach a string or wire to the extend chain yoke (8).

The string or wire must be long enough to pull the

extend chain through the boom in between the inner

boom (10) and the intermediate boom (11).

8. Pull the extend chain out through the back of the

boom.

9. Reattach the string or wire to the new

extend chain

and pull it through the boom between the inner boom

(10) and the intermediate boom (11).

10. At the front of the intermediate boom, coat the

sheave pin (15) and bore with anti-seize compound.

Coat the capscrew (12) with Loctite

242 (blue). Install

the sheave (14) into place and insert the sheave

pin (15), capscrew (12) and locknut (13). Torque

capscrew (12) to, 90 - 162 lb-ft (123 - 220 Nm).

MU0260

MU0210

MU4860

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Lull 944E-42 Service Manual User Manual Page 88

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