JLG 41AM (3120872) Service Manual - Manual (Page 55)

SECTION 2 - SERVICE PROCEDURES
3120872 – JLG Lift – 2-33
one side or the other.
The threaded end of the chain/cable may need to be
restrained while tightening the adjust nut to keep the
chain/cable from twisting.
7. Retract the mast all the way and check if the top of
the mast sections appear as shown in Figure 2-6.
8. Repeat steps (1) through (7) for remaining mast sec-
tions.
9. 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/
cable should have slight tension but should not be
taut.
Sequencing Cable Adjustment
1. Retract mast completely, and check each sequenc-
ing cable on outside of masts for excessive slack.
Adjust only to remove slack from cable.
2. Tighten nylock-nut just enough to remove excessive
slack from sequencing cable. The springs should
not be compressed more than 25% after adjusting.
3. Run mast through several cycles to verify cable/
chain adjustments and ensure no interference exists
between chain anchor brackets and mast.
Figure 2-6. Mast Chain/Cable/Sequence Cable Adjustment Components. (Typical)
SECTION-1
FIXED
TO BASE
SEQUENCE CABLE
ADJUST NUT
CHECK IF OVERALL HEIGHT
OF MACHINE FROM
FLOOR TO TOP OF MAST
IS WITHIN SPECIFICATION
SECTION-2
EXTENDED BY
CYLINDER
SECTION-5
(PLATFORM
HEADER SECTION)
EXTENDED BY
CHAIN/CABLE
CHAIN/CABLE
ANCHOR PLATE
ADJUST NUT
JAM NUT
THREADED
CHAIN/CABLE
END
SECTION-4
EXTENDED BY
CHAIN/CABLE
SECTION-3
EXTENDED BY
CHAIN
STEP APPROXIMATELY
7/16 in. (11mm)
MAST SIDE PROFILE MAST CHAIN/CABLE ADJUSTERS
Note:
When chain adjustment
is complete, before
tightening the jam nut
against the adjust nut,
apply Loctite #242 to the
threads under the jam nut.