JLG 15MVL Series Service Maintenance Manual page 100

SECTION 5 - MAST COMPONENTS
4. At the base end, remove and cap the extend and
return hydraulic lines.
Hydraulic Extend and Return Lines
1. Cylinder Return Line
2. Cylinder Extend Line
5. Remove the mini covers from the tops of the mast
sections.
6. Manually extend the mast assembly until the top of
mast section-2 is extended approximately one (1)
foot (31cm), to allow access to the sheave wheel-
anchor block at the top of mast section-2 and the lift
cylinder.
Extending Mast Sections
1. Mast Section-2
5-10
3. Manual Descent Valve
1
2
2. 1 ft. (31cm) Extended
7. Remove the adjust and lock nuts from the chain
studs at the bottom of mast section-3.
Chain Assembly - Bottom of Mast Section-3
1. Mast Section-4
2. Mast Section-3
3. Chain Assembly Stud (a)
Note: (a) Remove nuts and push studs through anchor plate.
8. Push mast sections-3, 4 and 5 back towards the
base assembly allowing the top of mast section-2 to
be completely exposed.
Exposing Top of Mast Section-2
1. Sections-3, 4 and 5 Pushed Back
2. Top of Mast Section-2 Exposed
– JLG Lift –
1
2
3
4
5
4. Adjust Nut
5. Lock Nut (b)
1
2
3121231