Manitowoc GROVE RT890E Operator's Manual page 27

RT890E
1. Follow the manufacturer's recommendations when
adding oil to the system. Mixing the wrong fluids could
destroy seals, causing machine failure.
2. Be certain all lines, components, and fittings are tight
before resuming operation.
3. When checking for suspected leaks use appropriate
personal protective equipment.
4. Never exceed the manufacturer's recommended relief
valve settings.
Tires
Inspect the tires for nicks, cuts, embedded material, and
abnormal wear.
Ensure all lug nuts are properly torqued.
Ensure pneumatic tires are inflated to the proper pressure.
When inflating tires, use a tire gauge, clip-on inflator, and
extension hose which will permit standing clear of the tire
while inflating.
Wire Rope
Use ONLY the wire rope specified by Manitowoc/Grove
CraneCARE 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 valley break where the wire fractures between
strands in a running rope is cause for removal.
3. Abrasion of the rope resulting in wear of the individual
outside wires of 1/3 of the original wire diameter.
4. Any kinking, bird caging, crushing, corrosion, or other
damage resulting in distortion of the rope structure.
5. Rope that has been in contact with a live power line or
has been used as a ground in an electric circuit (eg.
welding) may have wires that are fused or annealed and
must be removed from service.
6. 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.
7. Core deterioration is usually observed as a rapid
reduction in rope diameter and is cause for immediate
removal of the rope.
Refuse to work with worn or damaged wire rope.
When installing and inspecting wire ropes and attachments,
keep all parts of your body and clothing away from rotating
hoist drums and all rotating sheaves.
Never handle the wire rope with bare hands.
Periodic rope inspection records are required by law. Make
sure these records have been reviewed and are up to date.
When installing a new rope:
• Follow proper instructions for removing rope from a reel.
• Apply back tension to the storage/payoff reel of the new
rope to insure tight, even spooling onto the hoist drum.
• Operate the new rope - first through several cycles at
l i g h t l o a d a n d t h e n t h r o u g h s e v e r a l c y c l e s a t
intermediate load to allow the rope to adjust to operating
conditions.
When using a wedge socket:
• Always inspect socket, wedge, and pin for correct size
and condition.
• Do not use parts that are damaged, cracked, or
modified.
• Assemble the wedge socket with live end of rope aligned
with the centerline of pin and assure proper length of tail
(dead end) protrudes beyond the socket.
Never overload or shock load a wire rope. Lubricate the wire
rope periodically as the lubricant becomes depleted.
Inspect the boom nose and hook block sheaves for wear.
Damaged sheaves cause rapid deterioration of wire rope.
To attain maximum wire rope life and minimize hook block
rotation, it is recommended that even numbers of parts-of-
line be used in multiple-part reeving whenever possible.
SAFETY INFORMATION
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