84
x
x
x
x
x
x
x
x
x
x
x
x
fi
g. 6.1
fi
g. 6.2
6 - M
ਠਲਲ਼
ਠਭਣ
M
ਠਲਲ਼
T
ਨਤਲ
Mast head
Mast section
Bottom mast
section
Incorrect
Correct
Rack to rack
alignment
Power train side
Mast sections
Installation of mast sections
1-
Make sure that the motorized unit is positioned properly. Refer to p. 17 of the
Motorized Unit
section for more information.
2-
Refer to applicable local regulations governing distances between the mast climbing
work platform system and electrical lines.
3-
Remove the mast head (fi g. 6.2).
4-
Using an optional jib arm (see p. 119 of the
Accessories
section) or any other
appropriate lifting device such as a crane or a rough terrain forklift, raise the next mast
section and insert it on top of the bottom mast section.
5-
Make sure the spring pins on the racks are properly aligned and that the mast sections
are connected together (fi g. 6.1).
6-
Using 1"-8 x 8"
GR8
bolts and 1"
GR8
lock nuts, bolt all four corners together, making
sure the bolt heads are facing down. Tighten the four bolt and nut assemblies to
150 lb-ft (203 N-m) of torque to secure the mast section in place.
7-
Repeat steps 4 through 6 for each mast section.
The handling, installation and removal of mast sections must be performed with care to
avoid mishaps that may lead to safety issues. Mast sections loaded on the platform using
a crane or a rough terrain forklift
must be loaded equally on either side of the mast to
ensure good balance
.
8-
Make sure that the racks are suffi ciently greased along the whole length of the mast.
On
initial setup and subsequently after every 8 to 10 hours of cumulative runtime
(with unit traveling up and down the mast), grease must be applied to the racks and
gears, from the top of the mast down. For more information, refer to the daily inspection
checklist for this motorized unit.
Grease must be allowed to stand for 2-3 hours
before the motorized unit is used again. Use an open gear lubricant recommended by
Hydro Mobile. Refer to p. 133 of the
Transport, Storage and Maintenance
section for
more information on the appropriate lubrication method.
9-
Install the mast head on the last mast section and keep it in place until the setup is
dismantled.
WARNING
Failure to grease the gears and the mast racks properly and in a timely
fashion may cause premature wear of rack and pinion and provoke down
time, even lead to serious injury or death.
Mast sections can be pre-assembled in sections to speed up assembly when using
a crane. It is imperative to comply with local regulations for the lifting and handling
of equipment. The length of pre-assembled mast allowed will be equal to the
authorized height of mast in feet (meters) between two tie levels for the confi guration,
according to the selected method of installation and the mast tie schedule specifi c
to that method of installation.
a
o
a
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