SkyTrak 8042 Service Manual - Manual (Page 80)

3.19 Model 8042, 10042, 10054 Legacy Rev. 03/04
Boom
29. Inspect the pivot pin (15) for nicks or damage. If the
pin is damaged, it must be replaced.
30. Repeat Steps 28 and 29 to remove the other Lift/
Lower cylinder.
31. Remove the capscrews (16) and elastic
locknuts (17) holding the boom pivot pins (18) to the
frame. Use a brass punch and a rawhide hammer to
remove the pivot pins from the frame. While removing
the pins, note the location and quantity of shims (19)
between the outer boom and frame.
32. Use the hoist to remove the outer boom from the
frame. Position the outer boom on a hard, flat
surface. Block the boom as required to allow removal
of the Extend/Retract cylinder from the underside of
the boom.
33. This step is for Model 10042 S/N 13198 thru 18405
Only:
Note: On Model 10042 S/N 18406 & After, the stop
plate is an internal component of the extend/retract
cylinder.
a. Remove the boom stop plate (20) from the rod of
the Extend/Retract cylinder.
b. Remove the capscrews (21), elastic locknuts (22)
and flat washers (23) holding the stop plate (20),
cover plates (24), clamp (25) and safety plate
(26) to the Extend/Retract cylinder rod.
c. Discard the elastic locknuts and retain the
capscrews, flat washers, cover plates, clamp,
safety plate and stop plate.
34. Use a hoist and slings to support the Extend/Retract
cylinder. At the base end of the cylinder, remove a
retaining ring (27) from one side of the cylinder base
end pin (28). Use a brass punch and a rawhide
hammer to remove the base end pin from the
mounting ears on the outer boom.
35. Inspect the pin (28) for damage. If the pin is
damaged, it should be replaced. Retain the retaining
rings for reassembly.
36. Lower the base end of the Extend/Retract cylinder
and remove the rod end of the cylinder from the
retainer at the front of the boom. Place the Extend/
Retract cylinder on a clean, flat surface.
MH1230
13
14
15
MH1240
16
17
18
19
MH1250
24
25
20
21
22
23 24
25
26
MH1260
27
28