52
A
B
C
C
B
fi g. 3.38
fi g. 3.39
fi g. 3.40
fi g. 3.41
fi g. 3.42
fi g. 3.43
fi g. 3.44
3 - B
RIDGES
WARNING
Multi purpose insert (
MPI
) bridges bearing a serial number prior to
EXT01-134
require the use of an optional reinforcing kit when used in bearing
bridge confi gurations.
Multi Purpose Insert Bridge (
MPI
)
Bridge Setups
Required link plates
TYPE 3
TYPE 4
Position of pins in “A”
Position of pins in “C”
Connector angle
TYPE 3 link
plates
TYPE 4 link
plates
TYPE 3 link
plates
5-
Tighten the nut and bolt assemblies
(2) at the top of the bridges to 100 lb-ft (136 N-m)
of
torque.
6-
Lift the second
MPI
bridge and align the connector angle with the fi rst
MPI
bridge
installed.
7-
Assemble the top part of the bridges using two 1" x 3 1/2" long (
GR8
) bolt and nut
assemblies.
Do not tighten the bolt and nut assemblies yet
.
8-
Using two bridge link plates and pins assemblies (
TYPE 4
link plates, fi g. 3.39), attach
the bottom part of the bridges as shown in “B”, fi g. 3.43.
9-
Tighten the nut and bolt assemblies
(2) at the top part of the bridges to 100 lb-ft (136 N-m)
of
torque.
10-
Repeat steps 6 to 9 to continue installing as many
MPI
bridges as is required and
allowed. For more information on the types and number of bridges allowed in a
confi guration, refer to the
Load Capacities
section on p. 80.
11-
Lift and align the 6' (1,8 m) bearing bridge adapter with the last
MPI
bridge installed.
Assemble the top part of the bridge to the last
MPI
bridge as described in step 7.
12-
Using two bridge link plates and pins sets (
TYPE 3
link plates, fi g. 3.39), attach the
bottom part of the bridge to the last
MPI
bridge as shown in “C”, in fi g. 3.44.
Tighten
the nut and bolt assemblies
to 100 lb-ft (136 N-m) of torque.
13-
Using a rough terrain forklift or a crane, lift the bearing bridge structure and install it
between two motorized units. Refer to p. 46 of this section for more information about
the installation of a bearing bridge structure.
14-
Once the installation is complete, install the appropriate guardrails. Refer to p. 91 of
the
Accessories
section for more information on the installation and use of guardrails.
As Narrow Bearing Bridge
(requires the use of optional bearing link plates)
Installation (cont’d)
