Elliott E190, Operation And Maintenance Manual

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Five Section Boom Operation-aerial EEC-0080 V1.3
Five Section Boom Operation
4
th
, use caution to keep 3/4/5 extend cables from damage as boom sections slide
apart, if possible keep tension on 3/4/5 extend cables from the base end of the 4
th
boom section during this procedure.
Y. Lift 5
th
section off the lower pads and remove pads and hardware. Remove 3/4/5
extend sheaves and hardware.
Z. Slide 5
th
section completely out of 4
th
. Support the base end of the 5
th
as it exits the
4
th
section boom. Place 5
th
section boom on a suitable horizontal surface.
AA. Remove cable retainers and hardware from side anchor locations on the 5
th
section. Remove 3/4/5 extend and 5/4/3 retract cables from anchor points in the side
of the 5
th
section, place in suitable area to avoid damage.
BB. Remove loadline sheaves by removing retainers and lightly tapping on sheave
pin while removing sheaves and spacers until All sheaves are removed from boom
sheave case.
Additional Maintenance, Disassembled Boom
A. Clean all boom sections and inspect for wear, dents, bent or crooked boom sections,
gouged metal, broken welds or any abnormal conditions. Repair or replace as
required.
B. Inspect all sheaves for excessive groove wear or abnormal rim wear. Replace as
required.
C. Inspect all sheave bearings for excessive wear or cut inner liner material. If installed
bearing diameter is .015 inch (.38mm) larger than pin diameter, bearing must be
replaced. Any cut or gouge which causes the bearing liner to lose strands is cause
for bearing replacement.
D. Clean and inspect all cable assemblies according to wire rope inspection procedures
in this section. Pay particular attention to any wire breakage at the end connections.
Replace cable assemblies as required. Lubricate all cable assemblies as required.
Lubricate all cable assemblies before reinstalling them in boom.
E. Inspect all sheave pins for nicks, gouges or pitting due to rust in the bearing surface
area. Replace if any damage is evident.