Published 4-22-15, Control # 556-00 5-7
RT530E-2 SERVICE MANUAL HOIST AND COUNTERWEIGHT
Replace any parts showing excessive wear and any spring
whose length is shorter than the minimum shown in the
applicable hoist Service Manual.
Reassemble the brake and hoist and repeat the above steps.
When testing is complete, reattach the brake release line to
the brake release port.
The following should be carried out along with the
instructions in Lubrication, page 9-1.
1. Annually, have the hoist oil condition tested. This will
give advance warning of developing wear patterns. Any
signs of abnormal contamination should be treated
seriously and the internal components of the hoist
should be examined carefully, at the earliest opportunity.
2. Annually, check for correct function of the hoist brake by
conducting a high line pull load test, ensuring the brake
holds without creeping and that the hoist control is
correct. The function of the hoist brake should be
checked more often if abnormal operating conditions or
characteristics exist.
3. Every 10,000 hours or every ten years as part of a
preventative maintenance program, we recommend that
hoist assemblies be opened in a properly controlled
workshop environment. The major internal components
(gears, spline couplings, shafts, etc.) should be
examined for damage and/or wear. New components
should be installed if any are found to be worn or if there
is evidence of heat or other damage. Reassemble the
hoist using all new seals, bearings, fasteners, washers,
brake discs, brake stators, sprag clutch, and springs.
A comprehensive hoist line pull and load holding test must
be carried out following any such repair work.
Manitowoc Crane Care offers prepackaged kits that include
all the seals, bearings, fasteners, washers, brake disks,
brake stators, sprag clutch, and springs that are required for
reassembling the hoist after inspection. During the
inspection, if components not included in the kit are found to
be worn or damaged, contact your Manitowoc Cranes
distributor or Manitowoc Crane Care to order replacement.
HOIST TO BOOM ALIGNMENT
Preparation
Boom alignment must be completed before attempting hoist
alignment. If the hoist is not properly aligned, the cable can
be damaged or fine control could be affected.
The crane must be set on outriggers fully extended and the
crane must be leveled. The boom must be over the rear on
TM/TMS models and over the front on RT/Industrial models.
Tools Required
• two foot square
• mason cord
• chalk
• protractor
WARNING
Failure to implement and adhere to a hoist inspection and
maintenance program may result in damage to the crane,
other property damage, and/or serious injury or death to
persons working on or near the crane.
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