47
HYDRAULIC WINDSHIELD SYSTEM HWS
STEP
DESCRIPTION
DRAWING
9
Retract the “
Cylinder HWS” until t
he FOLLOWING “
Self-Climbing
Block LT HWS”
rests onto the “Pawl” of “
Head LT HWS”
.
Before resting the structure at the “Pawl” of the “Head LT
HWS”, verify that the pawl is at the correct position.
10
Continue the retraction of the “Cylinders”.
During retraction, the “Pawl” of the “
Climbing Head”
comes
across an intermediate “
Block”
which must be passed and left
behind.
The
“Pawl” of the “Climbing Head”
starts rotating by beating the
load of the spring.
As the spring is compressed, it will always be acting on the
“Pawl”. Thanks to this, when the “Pawl” of the “
Climbing Head”
finishes passing the “
Block”
, the “Pawl” recovers its “Working
Position”.
Verify that the “Pawl” of the “
Climbing Head”
recovers its
“Working Position” when finishing the retraction process.
11
Repeat elevations as many times as needed till the top of the
“
Mas”t
reaches the level of the “Anchor on Hold”.
Verify that claws are CLOSED and FIXED.
Verify that the “
Mast”
goes through the claws of the
“Anchor on hold”. It might require personnel assistance and
handling to lead it to its proper position
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