Quarterly Inspection (every 3 months)
or monthly in
Severe Duty Applications or prior to placing the machine
in service if it has not been used for three months or
more. Documentation of the inspection records must be
kept with the hoist/crane for a minimum of two years from
date of the inspection.
1. Perform the Pre-use Inspection
2. Inspect all hoist fasteners for tightness and corrosion.
Replace all corroded fasteners and tighten per the
torque specifications on page 11.
Semi-annual Inspection (every 6 months)
, or quarterly
in Severe Duty Applications. Documentation of the
inspection records must be kept with the hoist/crane for a
minimum of two years from date of the inspection.
1. Perform the Pre-Use Inspection and Quarterly
Inspection.
2. Take a sample of the gear oil from the hoist drum fol-
lowing the oil sampling procedure on page 18. The oil
sample must be taken prior to changing the gear oil.
Analyze the sample for wear metals, viscosity, signs
of overheating, oxidation, water and other contami-
nants. If the oil sample contains an unusual amount of
metallic particles, the hoist should be removed from
service and undergo a tear-down inspection.
Annual Inspection, Testing & Preventive
Maintenance
or semi-annually in Severe Duty
Applications. Documentation of the inspections must be
kept with the hoist/crane fro a minimum of two years from
the date of inspection. The Annual inspection must
include but not be limited to the following:
1. Perform the Pre-Use Inspection, Quarterly and Semi-
annual Inspections.
2. Change the lubricating oil in the hoist drum after an oil
sample is taken. The gear oil must be changed to
remove wear particles that impede reliable and safe
operation of the brake clutch and erode bearings and
seals. Failure to change gear oil at recommended
intervals may contribute to intermittent brake slip-
page, loss of load control, injury or death. Refill the
hoist with recommended lubricant.
The gear oil should be changed whenever the ambi-
ent temperature changes significantly and an oil from
a different viscosity range would be more appropriate.
Oil viscosity is critical to reliable brake clutch opera-
tion. Our tests indicate that excessively heavy or thick
gear oil may contribute to intermittent brake clutch
slippage. Make certain the gear oil viscosity used in
your hoist is correct for your prevailing ambient tem-
perature. Failure to use the proper type and viscosity
gear oil may result in loss of load control, property
damage, injury or death.
NOTE: If the oil sampling/analysis has not been per-
formed as required, tear-down inspections will be
required. Refer to tear-down inspection procedures.
To change the gear oil, slowly rotate the drum until the oil
drain plug is aligned with the lower oil port access hole
(where equipped).
Caution
-
Do not place fingers into
drain access port
. Install a short length of pipe thread-
ed for 1 in. NPT into the threaded drain port in the cable
drum. Reach through the pipe with a long Allen key and
remove the drain plug. The oil will drain out the length of
pipe and not between the drum and base. When the oil
has drained, install the plug securely. Removing the vent
plug will hasten the oil drain.
3. The vent plug is typically located in the drum bearing
support. It is important to keep the vent plug clean and
unobstructed. Whenever the gear oil is changed, the
vent plug should be removed, cleaned in solvent and
reinstalled. Do not paint over the vent plug or replace
with a solid plug or grease fitting.
13
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