National Crane 600H, Руководство по обслуживанию

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BOOM 600H SERVICE MANUAL
4-54
08-19-2022 Control # 092-13
9. Slide the 6
TH
-5
TH
assembly into the 4
TH
section far
enough to get the 5
TH
section sync cables through the
slots as the back of the 4
TH
section.
10. Install the rear sync cable sheaves on the side of the 4
TH
section (Figure 4-37). Route the sync cable around the
sheave.
11. Install the cable guides to the rear of the sync cable
sheaves (Figure 4-35).
12. Install the retract cable anchors with wear pads to the
front bottom of the 4
TH
section. Bolt the stop plate
between the cable anchors.
13. Install the sync cable sheaves to the top front of the
4
TH
section boom.
14. Run the 4
TH
section sync cable around the sheave at the
top of the 4
TH
section.
15. Install the cable guide to keep the sync cable in place
around the sheave.
NOTE: The anchor bracket for the 4
TH
section sync cable is
installed at the top of the 3
RD
section after the
6
T H
-5
T H
-4
T H
assembly is inserted into the 3
R D
s e c t i o n . S ee p a g e 4 -6 0 f or t h e i n s t a l l a t i o n
procedure.
16. Attach the top front wear pads to the 4
TH
section and
center the 5
TH
section in the 4
TH
section (Figure 4-44).
• With a thin metal bar, slide the wear pad assembly into
position between the boom sections.
• The wear pad is positioned to the outside and the metal
part is to the inside.
• Use Loctite 243 on the wear pad bolts and install the
bolts in the wear pad assembly.
• Measure between the front boom sections to center the
front of the boom sections.
• Adjust the wear pads on each side until the boom is
centered.
17. Install the telescope cylinder as described below.
Slide the 6
TH
-5th section assembly
into the 4
TH
section.
6
TH
Section
Retract Cable
FIGURE 4-41
4
TH
Section
5
TH
Section
5
TH
Section
Sync Cable
Front Cable
Anchor
FIGURE 4-42
Stop Plate
6
TH
Section
Retract Cable
Top Sync
Cable
Sheave
FIGURE 4-43
Cable
Guide
REAR
Threaded
Cable Stop
4
TH
Section
REFERENCE ONLY