JLG 19BD Service Manual - Manual (Page 68)

SECTION 2 - SERVICE PROCEDURES
2-46 – JLG Lift – 3121154
7. Retract the mast all the way and check if the top of
the mast sections appear as shown in Figure 2-9.
8. Repeat steps (1) through (7) for remaining mast sec-
tions.
9. Run mast through several cycles to verify chain
adjustments and ensure no interference exists
between chain anchor brackets and mast.
10. Once mast section adjustment is completed, apply
loctite #242 to the threads under the (jam) nuts that
were loosened. Then re-tighten the loosened (jam)
nuts until tight against the top (adjust) nut. Chain
should have slight tension but should not be taut.
2.11 SEQUENCING CABLE ADJUSTMENT
(See Figure 2-9. or Figure 2-13.)
1. Retract mast completely, and check each sequenc-
ing cable on the outside of masts for excessive
slack. Adjust only to remove slack from cable.
2. To adjust, tighten the locking nut on the upper end
of the cable (on top of the spring at the sequence
cable bracket located at the top and side of the
mast). Adjust enough to remove excessive slack
from the sequencing cable. Normally the springs
should not be compressed more than 25% after
adjusting.
NOTE: If slack can not be adjusted out of the cable, then the
cable has stretched and must be replaced. See Sec-
tion 2.12, Sequence Cable replacement kit, for cable
replacement procedure.
3. Run mast through several cycles to verify cable
adjustments are correct.