(5) Blocks that support lowered tower with
Do not let elevator assembly go
tower adapter attached must be capable of supporting at
least 2,000 pounds.
beyond its upper limit of travel. Take
extreme care when it approaches this
(6) When hoisting equipment, hoist operator
position. Otherwise excessive cable
shall not be permitted to perform any other work. He
stress could result, and this stress
shall not leave controls until load has been safely
lowered to the ground.
could cause equipment failure or
injury to persons.
(7) Do not let elevator assembly go beyond
its upper limit of travel. Damage to equipment or injury
(5) Raise elevator to top and secure with
to personnel could result. Be very careful as elevator
approaches this limit. Have someone at tower top to tell
steps (2) and (3).
elevator hoist operator when elevator reaches upper
(6) Install temporary antenna installation
(8) When elevator is lowered, bottom roller
problems in bolting and unbolting carriage.
assemblies of elevator assembly must be at least 6
(7) Roll carriage onto elevator. To prevent
inches from bottom of lowest track section.
misalignment between elevator and tower tracks that
(9) When antenna is lowered, be sure that
would result from the load on the elevator stretching the
side of antenna that faces tower does not have
elevator cable, briefly operate hoist with UP control.
protruding elements that would interfere with elevator
Secure with six bolts (20), nuts (21), lockwashers (22),
and square beveled washers (23).
(8) Remove antenna installation platform.
When tower is lowered, be sure that
cable rides in cable slot at top of gin
When elevator is lowered, bottom
pole. Gin pole will then act as lever.
b. Antenna. Item numbers that follow refer
assembly must be at least 6 inches
from bottom of lowest track section.
(1) Install elevator assembly.
(9) Remove shear pins and retaining pins
previously inserted. With elevator hoist, lower elevator.
Before raising or lowering load with
(10) Remove remaining elements that must be
removed before antenna can be detached from
elevator. Raise and lower elevator when necessary.
controls momentarily to eliminate all
Use 20-foot ladder and tower leg ladders to reach
slack in cable. Otherwise starting
can cause shock load which could
cause damage to hoist or to rigging.
(11) Remove antenna and pedestal from
elevator. Refer to TM 32-5985-201-15.
(2) Test elevator for proper operation.
(12) If elevator is not to be used soon, remove
(3) Disconnect transmission lines from
antenna and control cable from positioner.
c. Antenna Carriage Assembly. Refer
to figure 5-
When antenna is lowered, be sure
(1) Remove two stop bolts (25), nuts (21),
that side of antenna that faces tower
does not have protruding elements
that would interfere with elevator
(2) Detach carriage assembly (24) from
elevator assembly (17) by removing six bolts (20), nuts
(4) The antenna may be lowered with
elements protruding from the three sides that do not
(3) Have two persons roll carriage assembly
face tower. Detach all elements from side facing tower
(24) off horizontal tracks (18) of elevator assembly and
that would interfere with elevator motion. Refer to TM
disengage roller assemblies (16).
32-5985-201-15. Scaffold winch may be used to lower
antenna elements to ground.