National Crane 600H, Руководство по обслуживанию

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BOOM 600H SERVICE MANUAL
4-46
08-19-2022 Control # 092-13
BOOM DISASSEMBLY
Refer to the six section boom assembly procedure for details
when disassembling the boom. The general guidelines for
boom disassembly is as follows:
1. Remove the boom from the truck and place on suitable
supports.
NOTE: Tag all wear pads, cables, and sheaves as the
components are removed from the boom. Tag and
cap all hydraulic lines.
2. Unbolt the telescope cylinder from the 1
ST
section boom
(Figure 4-54).
3. Unbolt the sync cable at both the top front and bottom
front of the 1
ST
section (Figure 4-26).
4. Loosen and remove the top front wear pad on the 1
ST
section (Figure 4-44).
5. Unbolt and remove the boom stop from the bottom front
of the 1
ST
section boom (Figure 4-42).
6. Slide the five section boom assembly out of the 1
ST
section.
7. Remove the telescope cylinder.
• Remove the bolts from the trunnion retaining bars
on the 2
ND
, 3
RD
, 4
TH
, and 5
TH
boom sections.
• Slide the telescope cylinder out of the boom.
• Remove the extend cable sheaves from the nose of
the telescope cylinder.
8. Separate the remaining boom sections using steps 3
through 6.
9. Remove the sync cable sheaves, cable guides, and
sync cables as the boom is being disassembled.
BOOM ASSEMBLY
Assemble the boom in the following order:
• 6
TH
section
• 6
TH
-5
TH
-4
TH
section assembly
• telescope cylinder installation
• 3
RD
-2
ND
-1
ST
section assembly
• sync cable adjustment and torquing
Sixth Section Assembly
The 6
TH
section is the only section to use extend and retract
cables. The assembly of the six section boom is as follows:
10. Assemble the top rear wear pad on the back of the 6
TH
section and finger tighten the bolts. Lay the wear pad in
the cam plate (Figure 4-27).
11. Attach the retract cable to the side 6
TH
section with the
anchor clamp (Figure 4-29) and coil the retract cable
inside the 6
TH
section boom (Figure 4-31).
DANGER
Ensure that all stages of the telescope cylinder are fully
retracted prior to
removal of the telescope cylinder from
the boom assembly or prior to installation of the telescope
cylinder into the boom assembly.
Only attempt to extend, retract, disassemble, or assemble
the telescope cylinder when the cylinder is mounted in a
fixture supplied by Crane Care. Failure to do so could
allow uncontrolled movement resulting in.
DEATH OR SERIOUS INJURY
Contact Crane Care for assistance in service or repair of
the telescope cylinder.
CAUTION
Be careful not to damage the sync cables or extend and
retract cables as the boom sections are being separated.
CAUTION
The extend cable sheaves can slide off the shaft to the
ground cause injury to ft.
REFERENCE ONLY