JLG 534D-10 - Manual (Page 53)

3.25 534D-9, 534D-10 & 544D
Boom
10. Torque all fasteners and hydraulic fittings per Section
2.2, “Torque Charts.”
3.10.8 Fourth Boom Section Install
1. Place the clean and inspected fourth boom section
on suitable supports.
2. Grease the wear pad and hose carrier assembly
sliding path areas thoroughly.
3. Fasten the wear pad for the hose carrier to the inside
of the boom.
4. Attach the bracket (1) for the hose carrier to the
inside of the boom.
5. Make sure that the inside guide paths for the hose
carrier assembly guide bracket are greased.
6. Install all the rear wear pads. Leave one shim out of
each package to aid with the installation into the third
boom section.
7. Attach the chain clevis and the keeper plate to the
inside rear of the boom.
8. Assemble the grease fitting extensions for the
bottom rear wear pads.
9. Grease the outside wear pad paths.
10. Lubricate the 1 in (25 mm) extend chain completely.
Make sure the chain is inspected and is in good
working condition. See Section 3.12, “Boom Extend
and Retract Chains - Four Section.”
11. Attach the chain to the chain clevis.
12. Attach the chain clevis to the top of the fourth boom
section.
3.10.9 Third Boom Section Install
1. Place the clean and inspected third boom section on
suitable supports.
2. Grease the inside wear pad paths.
3. Using a suitable sling, lift and position the fourth
boom section in front of the third boom section.
4. Slowly insert the fourth boom section into the third
boom section.
5. Install the top front wear pads to the third boom
section. DO NOT torque the pad bolts.
6. Install the wear pad support. DO NOT torque the
pad support bolts.
7. Install the bottom front wear pads. DO NOT torque
the pad bolts.
8. Install the front side wear pads.
9. Torque the bolts on the front wear pads and
supports.
10. Shim the rear wear pads on the fourth boom section if
needed and torque to 68 - 78 lb-ft (92 - 106 Nm).
11. Install the wear pads on the bottom rear of the third
boom section. Leave bolts loose for shimming.
12. Install the wear pads on the rear sides of the third
boom section. Leave bolts loose for shimming.
13. Install the wear pads on the top rear of the third
boom section. Leave bolts loose for shimming.
14. Install the grease fittings for the wear pad and chain
roller assembly.
15. Install the chain clevis (2) to the rear of the third
boom section.
16. Install the chain roller (3) at the bottom rear of the
boom section.
17. Lay out and lubricate the 3/4 in (19mm) retract chain.
Make sure the chain has been inspected and meets
the adjustment parameters in Section 3.12, “Boom
Extend and Retract Chains - Four Section.”
MX0400
1
MX0410
2
3 4
5