Lull 944E-42 Service Manual User Manual download pdf (Page 91)

100

101

3.43

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

Boom

12. From the rear of the boom, one person should push

the threaded clevis end (11) of the retract chain under

the chain sheave (10) and down between the

intermediate boom and the outer boom. The person

at the front of the boom should pull the front

clevis (11) using the string or wire attached to the

clevis in Step 6.

13. Push the threaded clevis down to the tab (12) at the

front underside of the outer boom.

14. The person at the front of the boom should guide the

threaded end of the clevis (11) through the hole in

the tab (12).

15. Replace the retract yoke (8) on the rear of the inner

boom (9) with the clevis pin (7) and two retaining

rings (6).

16. Remove the string or wire from the end of the clevis.

17. Secure the threaded clevis in place with a new

elastic locknut (13) and washer (14). Tighten the

elastic locknut (13) until the amount of threads

protruding beyond the elastic locknut is the same as

the measurement recorded during removal of the

retract chain.

18. Adjust retract chain tension. (Refer to Section 3.4.4,

a. “Component/Assembly Verification.”)

19. Replace the rear cover on the rear of the outer boom.

Install the boom rear cover (17) using four capscrews

(15) and flat washers (16). Coat the capscrews with

Loctite

242 (blue). Torque capscrews (15) to,

21 - 38 lb-ft (29 - 52 Nm).

MU1410

MU0170

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Lull 944E-42 Service Manual User Manual Page 91

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