JLG 534D-10 - Manual (Page 36)

Boom
3.8 534D-9, 534D-10 & 544D
4. Set the second and third boom sections onto a
suitable support and reset the sling under the boom
head of the third boom section.
5. Carefully slide the two boom sections into the first
boom section. Leave 6 in - 8 in (152 mm - 203 mm)
in of the two boom sections out to be able to install
the wear pad block and the wear pads in the front of
the first boom section
6. Install the hose take-up assembly (5) components at
the front of the first boom section.
7. Install the retract cable adjusting block (6). Install the
retract cable. Do Not tighten the retract cable.
8. Install the wear pad block to the front inside of the
first boom section. Use Loctite 242 ® and torque the
wear pad block mounting bolts to 265-290 lb-ft
(359 - 393 Nm).
9. Install the wear pads, spacers and shims at the front
of the first boom section. Use Loctite 242 ® and
torque the wear pad mounting bolts to 68-78 lb-ft
(92 - 106 Nm).
10. Place the strong back (7) in place at the rear of the
first boom section and install the extend/retract
cylinder mounting pin, spacers and retaining clips.
11. Measure the space between the top and bottom of
the strong back (8) and the inside of the first boom
section and shim as needed.
12. Install and torque the strong back mounting bolts.
13. Install the extend cables, springs, washers and lock
nuts into the strong back (9).
14. Tighten the extend cables adjusting nuts until the
gap between the cable flat washer and strong back
is 1/32 in to 1/16 in (0,79 mm - 1,57 mm). Gap for
both washers should be equal.
Note: When adjusting cables, make sure the cables are
not turning.
15. Torque the cable jam nuts to 100 lb-ft (135 Nm).
16. Install the extend/retract hoses.
17. On the bottom side of the first boom section install
the hose clamps for the tilt and auxiliary circuit
hoses.
Note: Do Not tighten clamps at this point.
18. At the area between the hose take-up bracket to the
first hose clamp, adjust the hoses to form a 4 in
(102 mm) partial loop between the bottom of the first
boom section to the bottom of the hoses (10).
19. Tighten all hose clamps.
MX0180
5
6
10
MX0190
7
8
8
9