National Crane 01-22-2019 Control # 051-08 4-9
1300A BOOM MAINTENANCE
12. Install the cable retainer to the top plate of the 2
nd
section (Figure 4-12).
13. On the base end of the 2
nd
section install the upper wear
pad and plate (Figure 4-13).
14. Extend the 4
th
section 4 to 5 inches.
15. Extend the 3
rd
section 4 to 5 inches or until anchor plate
is accessible.
16. Install the anchor assembly, plate and extend cable
(Figure 4-14).
Telescope Cylinder Installation
1. Install the sheave wheels on the telescope cylinder. The
holes in end of pin must be located as shown in
(Figure 4-15).
2. Reeve the retract cables around the telescope cylinder
sheaves.
3. Install the wear pads on the telescope cylinder.
NOTE: Ensure the top wear pads do not fall off during
cylinder installation (Figure 4-15).
4. Insert the telescope cylinder assembly ½ to ¾ of the way
into the 2
nd
section.
5. At the base end of the 4
th
section (Figure 4-16) install
the anchor assembly in the following order:
a. Plate
b. Extend cable button ends
c. Anchor assembly and cap screws
FIGURE 4-12
Cable Retainer
FIGURE 4-13
Plate
Wear Pad
Shims
FIGURE 4-14
Anchor Plate
Assembly
FIGURE 4-15
Holes in Pin
This Side.
Wear
Pads