Lull 944E-42 Service Manual - Manual (Page 71)

3.23 Model 644E-42/944E-42 Rev. 6/04
Boom
7. Use a suitable overhead lifting device and sling to
support the outer boom and allow for the
detachment of the lift/lower cylinder.
8. Use a suitable overhead lifting device and sling
attached to the lift/lower cylinder (14). Remove slack
from the sling.
9. Remove one capscrew (15) and one locknut (16)
securing the lift/lower cylinder pin (17) at the outer
boom lift/lower cylinder mount boss on the underside
of the outer boom.
10. Carefully extract the lift/lower cylinder pin (17).
11. Lower the lift/lower cylinder into the chassis cavity,
onto a suitable support placed at the front of the
cylinder.
12. Working from the top of each slave cylinder (18),
remove one capscrew (19), washer (20) and one
locknut (21) at the slave cylinder mount pin (22).
13. Remove the slave cylinder mount pin (22) and
carefully lower each slave cylinder against the
transfer carriage. DO NOT stretch or damage the
slave cylinder hydraulic hoses.
14. Use a suitable overhead lifting device and sling to
attach to the loop (23) on back of the outer boom.
Use the other sling supporting the front of the outer
boom and remove the slack from the front and back
supporting slings.
15. Remove cotter pins (24) from the clevis pins (25)
and pull the clevis pin from the pivot pin (26).
Note: Record the number, thickness, and position of the
shim washers (27) to ensure correct installation.
16. Remove the boom pivot pin (26) and shim
washers (27).
17. Withdraw the outer boom from the vehicle. Carefully
lower the outer boom onto suitable supports or to the
ground.
MU0350
14
15
16
17
MU0370
18
19
20
21
22
23
MU0400
24
25
26
27