JLG 534D-10 - Manual (Page 42)

Boom
3.14 534D-9, 534D-10 & 544D
3.5.4 Retract Cable Installation
1. Fasten the rope left in the boom from the retract
cable removal to the new retract cable and pull the
cable through the boom sections to the approximate
final position. Remove the rope.
2. Install the retract cable socket end (7) to the cable
anchor bracket weldment.
3. Install the retract cable threaded end through the
rear cable sheave bracket and cable adjusting block.
4. Feed the retract cable into the inside bottom front of
the first boom section to the retract cable adjustment
access hole.
5. At the front of the third boom section, install the push
beam and align the push beam mounting pins.
6. Install the push beam mounting pins and lock bolts.
7. Install the retract cable to the cable adjustment block
at the bottom front of the first boom section.
8. Install the retract cable sheave and all the related
components.
9. Install the cable guards.
10. Install the hose guards at the rear of the boom.
11. Place the strong back in place at the rear of the first
boom section and install the extend/retract cylinder
mounting pin, spacers and retaining clips.
12. Install the previously removed shims to the top and
bottom of the strong back/cylinder bracket.
13. Install and torque the strong back mounting bolts.
14. Uncap and reconnect the previously labeled
hydraulic hoses to the appropriate locations.
15. Install the extend cables, springs, washers and lock
nuts into the strong back.
16. At the retract cable adjusting block (1) located at the
bottom front of the first boom section, tighten the
retract cable adjusting nut until the front of the
threaded end lines up with the front edge of the
access hole.
17. At the strong back, tighten the extend cable
adjusting nut (2) until the gap between the cable flat
washer and the strong back is 1/32 to 1/16 in
(0,79 - 1,57 mm). Gap for both washers should be
the same.
Note: When adjusting cables, make sure the cables are
not turning.
18. Install the jam nut to the adjusting nut and torque to
100 lb-ft (135 Nm).
19. Refer to Section 3.5.2, “Cable Adjustments,” for
boom section specifications.
3.5.5 Extend Cable Removal
The removal of the extend cable is a difficult operation;
but it can be accomplished. You must be able to reach
into the rear of the boom assembly to unfasten the extend
cable socket from the cable anchor bracket weldment.
The bracket is welded to the rear bottom plate of the third
boom section. If you cannot reach this bracket, the boom
sections must be separated.
MX0240
7
MX0250
1
MX0260
2 2