TM 5-3810-307-10
2.
Be certain all lines, components, and fittings are tight before resuming
operation.
3.
When checking for suspected leaks, use a piece of wood or cardboard and
wear appropriate personal protective equipment.
4.
Never exceed the manufacturer's recommended relief valve settings.
2-11.3
Tires.
Inspect the tires for nicks, cuts, imbedded material, and abnormal wear.
Ensure all lug nuts are properly torqued.
Ensure pneumatic tires are inflated to the proper pressure (refer to the Tire Inflation
Decal on the crane). When inflating tires, use a tire gauge, clip-on inflator, and extension hose
which will permit standing clear of the tire while inflating.
2-11.4
Wire Rope.
Use ONLY the wire rope specified by Grove as indicated on the crane's load
capacity chart. Substitution of an alternate wire rope may require the use of a different permissible
line pull and, therefore, require different reeving.
Always make daily inspections of the wire rope, keeping in mind that all wire rope
will eventually deteriorate to a point where it is no longer usable. Wire rope shall be taken out of
service when any of the following conditions exist:
1.
For rotation resistant running ropes - more than two (2) broken wires in a
length of rope equal to six (6) times the rope diameter, or more than four (4)
broken wires in a length of rope equal to thirty (30) times the rope diameter.
2.
For running ropes other than rotation resistant - six (6) broken wires in one
rope lay or three (3) broken wires in one strand.
3.
One valley break where the wire fractures between strands in a running rope
is cause for removal.
4.
Abrasion of the rope resulting in wear of the individual outside wires of 1/3 of
the original wire diameter.
5.
Any kinking, bird caging, crushing, corrosion, or other damage resulting in
distortion of the rope structure.
6.
Rope that has been in contact with a live power line or been used as a
ground in an electric circuit (e.g. welding) may have wires that are fused or
annealed and must be removed from service.
7.
In standing ropes, more than three (3) breaks in one rope lay in sections
beyond the end connection or more than two (2) broken wires at an end
connection.
2-20
