Lifting Chains Removal - JLG TOUCAN DUO Service Manual

VI-3 REMOVAL - INSTALLATION PROCEDURES

6.3.5 Lifting chains removal

The mast sections are connected to each other by
lifting chains. There are two lifting chains per mast
section. The lifting chains are always under tension.
The tension forces are equalized by a chain equalizer
located at the end of the chains. The chains ride on
pulleys mounted at the top of the mast sections. When
the elevation function is controlled, the lifting chain
pulls the mast sections up.
Split pin
Fig. 6.4
NOTE
The mast assembly consists of 4 mast
sections. For ease of description, a number
will be given to each mast section from the
mast section at the bottom to the mast section
on top.
NOTE
- Beware: the removal of the lifting chains is
a delicate operation requiring certain
precautions. The platform must be empty and
fully lowered. The machine must be parked
in an open area.
- Check the capacity of the work bench and
ensure it is level.
Removal procedure
1- Remove the mast assembly from the chassis
(see § 6.2)
2- Remove the mast cylinder (see § 6.3.1)
3- On the lower part of each mast section, mark
the position of the mounting plate for the back
up cable. Remove both plates.
72
Chain
Chain clevis
Clevis pin
Equalizer
Equalizer bracket
4- On the left hand side of the mast, remove the
electrical cables from their pulleys.
NOTE
During removal, always start by the top mast
section and continue in succession.
Fig. 6.5
5- Unscrew the locknuts from both equalizers (see
fig. 6.4).
6- Remove the equalizer bracket from mast section
n°4.
7- • Position the mast as represented below by
sliding the top mast section towards the top of
the mast assembly.
• Remove the circlips, the pins securing the
chain clevis to the equalizer, the clevis pins
and the equalizer from the greyed mast section
(mast section n°3).
8- • Position the mast as represented below by
sliding the top mast sections towards the top
of the mast assembly.
• Remove the circlips, the pins securing the
chain clevis to the equalizer, the clevis pins
and the equalizer from the greyed mast section
(mast section n°2).
TOUCAN Duo
VI-3
models
Updated 06-2015