JLG 510AJ Service Manual - Manual (Page 202)

SECTION 4 - BOOM AND PLATFORM
4-4 – JLG Lift – 3121181
1. Upper Boom
2. Tower Link
3. Upper Upright
4. Upper Lift Cylinder
5. Upper Tower Boom
6. Tower Link
7. Boom
8. Lower Lift Cylinder
9. Lower Upright
Figure 4-2. Boom Assembly