Skytrak 6042 Service Manual User Manual download pdf (Page 51)

3.5

Model 6042 Legacy Origin 7/02

Boom

5. Remove the elastic locknut (Fig. 3-4, 1) and

shoulder bolt (2) holding the two yoke plates (3) to

the mount at the front of the outer boom. Retain the

shoulder bolt and discard the elastic locknut.

6. Inspect the yoke plates (Fig. 3-4, 3) for wear or

distortion. If any wear or distortion is detected, both

plates must be replaced. If no wear is detected, the

plates can remain assembled to the extend chain clevis.

Figure 3-4 Extend Chain Yoke Plates

7. Pull the two extend chains, with the yoke plates

attached, towards the front of the boom and lay them

on the top of the inner boom.

8. Remove the capscrew (Fig. 3-4, 4) and

lockwasher (5) holding the extend chain sheave

pin (6) to the mounting ears on the intermediate

boom. Remove the pin from the mounting ears and

the extend chain sheave (7). Remove the extend

chain sheave and inspect the condition of the

sheave bushings. Replace the bushings if showing any

signs of wear.

9. Inspect the pin (Fig. 3-4, 3), and replace the pin if

there are any signs of wear.

10. At the front of the intermediate boom (Fig. 3-5, 1),

remove the capscrews (2) and lockwashers (3)

holding the top wear pads (4), spacers (5) and

shims (6) (if present) to the inside of the intermediate

boom. Label the wear pads, spacers and shims as

“Top Left” and “Top Right” sides. Also note the

orientation of the mounting hole offset. Save the

shims, spacers, capscrews, lockwashers and wear

pad inserts (7).

Figure 3-5 Front Top Wear Pads

11. At the front of the intermediate boom (Fig. 3-6, 1),

remove the capscrews (2), lockwashers (3) and flat

washers (4) holding the side wear pads (5) and

shims (6) to the inside of the intermediate boom.

Label the wear pads and shims as “Left Upper/Lower”

and “Right Upper/Lower.” Also note the orientation of

the mounting hole offset. Save the shims, capscrews,

flat washers, lockwashers and wear pad inserts (7).

Figure 3-6 Front Left and Right Side Wear Pads

12. 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.

13. 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 hydraulics system.

MA10,0410

MA10,0420

MA10,0430

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Skytrak 6042 Service Manual User Manual Page 51

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