JLG 4017RS Service Manual - Manual (Page 56)

Boom
3-16 3614RS, 4017RS
4. Adjust the boom chains to obtain dimension (A)
175,0-190,0mm (6.9-7.4 in).
Note: Ensure that there is a minimum of one full thread of the
clevis showing beyond the lock nut.
5. Start the machine and slowly extend and retract the
boom three times.
6. Retract the extend/retract cylinder completely. Turn
OFF engine
7. Repeat step 4 and 5 if necessary.
8. Tighten the extend/retract chain lock nuts (10 & 11) to
120 Nm (86 lb-ft) against the adjusting nut.
Note: Ensure that there is a minimum of one full thread of the
clevis showing beyond the lock nut.
9. Start the machine and cycle the extend/retract cylinder
to verify the boom extends and retracts properly.
10. With the boom level, extend the boom completely and
retract 50,0mm (2.0 in).
11. Verify dimensions (B) 3900,0mm (153.5 in) and (C)
1950,0mm (76.8 in) are correct.
12. Verify the SAG dimension (D) is 160-165mm
(6.3-6.5 in).
13. Adjust extend chain (10) if required. Repeat steps 9, 10
and 11 if necessary.
MZ7820
A
M 7830 Z
D
B
C