Skytrak 6042 Service Manual User Manual download pdf (Page 99)

100

101

3.53

Model 6042 Legacy Origin 7/02

Boom

If no string or wire was installed to the end of the

clevis:

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

the threaded clevis end (Fig. 3-112, 1) of the retract

chain (2) under the chain sheave and down between

the intermediate boom and the outer boom. Keep

the retract chain (2) to the right side of the boom,

push the threaded clevis down to the tab (3) at the

front underside of the outer boom.

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

threaded end of the clevis (Fig. 3-112, 1) through

the hole in the tab (3) using a Phillips screwdriver (4).

Insert the screwdriver through the hole in the tab and

catch the countersunk hole in the end of the clevis.

Guide the threaded clevis out as the person at the

rear of the boom pushes the retract chain forward.

Figure 3-112 Chain Clevis through Tab in Outer Boom

Once the threaded clevis is through the tab on the

outer boom:

20. Reassemble the flat washer (Fig. 3-113, 1), saved,

and a new 3/4-16 elastic locknut (2) onto the threaded

clevis (3). Tighten the locknut until the threaded end

of the clevis is flush with the top of the locknut.

21. Tighten the elastic locknut (Fig. 3-113, 2) on the

retract chain clevis (3) until the amount of threads

protruding beyond the elastic locknut is the same as

the measurement recorded during removal of the

retract chain.

22. Adjust retract chain tension. (Refer to Section 3.4.3,

“Boom Chain Tension Check.”)

Figure 3-113 Retract Chain Clevis to Tab in Outer Boom

23. After adjustment is complete, assemble the rear cover

to the rear of the outer boom. At the rear of the outer

boom (Fig. 3-114, 1), position the rear cover (2) in

place. Secure the cover in place with the 5/16" flat

washer (3), saved, lockwasher (4), saved, and

thumbscrew (5), saved. Insert the thumbscrew

through the bottom of the outer boom and into the

rear cover. Tighten the thumbscrew securely to hold

the cover in place.

Figure 3-114 Assembly of Rear Cover to Outer Boom

MA9520

MA9510

MA9820

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Skytrak 6042 Service Manual User Manual Page 99

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