Lull 944E-42 Service Manual User Manual download pdf (Page 89)

100

101

3.41

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

Boom

11. If needed, pull the boom out slightly to align the

extend chain yoke (8) with the sheave (14). Route

the extend chain around the sheave (14) on the

intermediate boom. Coat the clevis pin (7) and clevis

bore hole with anti-seize compound. Connect extend

chain yoke (8) to the outer boom anchor bracket (16)

with the clevis pin (7). Secure the pin with two

retaining rings (6).

12. Coat the capscrew (2) with Loctite

242 (blue). At the

rear of the inner boom (1), attach the retract chain (4)

into the first hole in the anchor link (5) using one

capscrew (2) and one flat washer (3). Torque

capscrew to, 37 - 66 lb-ft (50 - 90 Nm).

13. Install the boom rear cover (17) using four

capscrews (18) and flat washers (19). Coat the

capscrews with Loctite

242 (blue). Torque to 21 - 38

lb-ft (29 - 52 Nm).

b. Retract Chain Removal and Replacement

1. Park the vehicle on a hard, level surface.

2. Fully retract the boom and raise the boom to a

horizontal position. Place the travel select lever in

the (N) NEUTRAL DETENT position, engage the

parking brake switch and shut the engine OFF.

3. Remove four capscrews (18) and flat washers (19).

Remove the boom rear cover (17). Leave the

clips (20) attached to the cover.

4. At the front underside of the boom, record the amount of

threads extending beyond the elastic locknut (22).

This measurement will be the starting point for

adjustment of the boom retract chain.

Note: ALWAYS replace elastic locknuts with new elastic

locknuts to help ensure proper fastening.

5. At the front of the outer boom (21) remove the

locknut (22) and washer (23) securing the retract

chain (24) to the boom.

MU0170

MU1410

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Lull 944E-42 Service Manual User Manual Page 89

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