Rev 3.1
21 | P a g e
Ultra-High Usage
For any units exceeding 5000 lifts per year, this section provides additional inspection
criteria.
Pre-use checks
i.
Check load plate for wear, cracks, nicks, gouges, corrosion, and distortion of plate or
holes.
ii.
Check node plate weldment for cracks, nicks, gouges, corrosion, and distortion of
plate or holes, paying particular attention to the welds.
iii.
Check the folding seat support assembly, seat mounting cross member, Cantilever
Weldment, sliding sleeve weldment for cracks, distortion, paying particular attention
to the welds.
iv.
Check hydraulic damper for leaks and that all fastening points are secure.
Visual inspection
i.
In addition to the guidance it item 5 the node plate welds should be visually inspected
for cracks.
ii.
In addition to the guidance it item 6 all the welds on the seat base assembly, sliding
carriage should be visually inspected.
iii.
In addition to the guidance it item 7 the springs should be visually inspected for
cracks
iv.
In addition to the guidance it item 9 the foot mounting plate should be visually
inspected for cracks and distortion.
v.
In addition to the guidance it item 8, the floor grating should be visually inspected for
sign of distortion, cracking, or corrosion. The welds should be visually inspected
around the mounting plate for cracks.
Examination
i.
In addition to the guidance it item 3, visually inspect the load plate for cracks and
distortion. Particular attention should be paid to the holes in the load plate.
ii.
In addition to the guidance it item 5, the welds on the lower node plate should be
inspected using the dye penetrant technique for cracks. The welds on the upper node
plate should be visually inspected for cracks.
iii.
In addition to the guidance it item 6 all the welds on the seat base assembly, sliding
carriage should be visually inspected.
iv.
In addition to the guidance it item 8, the buoyancy panels should be removed and the
pillar strut weldment should be visually inspected for cracks and distortion. Particular
attention should be paid to the welds, holes and the inner ends of the pillar strut
where they join the node weldment. The floor grating should be visually inspected for
sign of distortion, cracking, or corrosion. The welds should be visually inspected
around the mounting plates for cracks.