TM5-3810-307-10
j.
Attach a nylon lifting sling to the foot roller and use the pile line (aux. hoist) of the
crane to position and assemble the foot roller onto the base of the lead tower.
Align the dowels on the foot roller with the holes in the lead tower and ensure the
gib rails are properly aligned. Install the joint retaining blocks with assembled
bolts, washers, and nuts. Torque the joint bolts and nuts to 680 ftlb (920.6 Nm).
NOTE
If the gib rails are not lined up properly it will be difficult to install
the impact hammer and pile gate.
k.
Attach the nylon lifting sling to the lead head adapter and use the pile line (aux.
hoist) of the crane to position and assemble the lead head adapter onto top of the
lead tower. Ensure the impact hammer (front) side of the lead head adapter faces
the hammer side of the lead tower. Align the dowels on the top lead section with
the holes in lead head adapter. Install the joint retaining blocks with assembled
bolts, washers, and nuts. Torque the joint bolts and nuts to 680 ftlb (920.6 Nm).
l.
Use the pile line (aux. hoist) of the crane and the nylon lifting slings to turn the
assembled lead tower over on the wood blocks with the impact hammer side
surface with the larger tubular rails on each lead section facing up.
m.
Install the rough-terrain wheels on the shafts of the foot roller assembly and secure
with the shaft pins.
Lead Tower Installation
The lead head adapter, attached to the top of the lead tower, attaches to the crane boom nose
via two boom nose adapter plates, one on each side. The boom nose adapter plates are then
connected to the lower boom nose shafts on the boom nose by locking collars.
NOTE
The left and right side boom nose adapter plates are different and
are stenciled with the words LEFT and RIGHT. Each must be
installed on the correct side of the boom nose.
NOTE
If at any time during the installation of the lead tower the weight of
the anti-two block switch, which is hanging freely, comes in
contact with the ground (i.e. the weight is lifted, relieving the
tension on the chain), the hydraulic functions of the crane will be
locked out by the Load Moment Indicator (LMI) system. Take
measures to ensure tension remains on the chain(s) during lead
tower installation. Be sure to return the chain(s) to the normal
position prior to raising the lead tower to the vertical position. If
the crane is equipped with only one anti-two block switch, the red
by-pass flag can be installed on the anti-two block switch to
maintain tension on the chain.
H-42 Change 1
