14
must be kept with the hoist / crane for a minimum of two
(2) years from the date of inspection. This inspection
must be carried out by a qualified crane operator or
qualified crane inspector. A qualified crane inspector
shall perform inspections on cranes assigned a moder-
ate, heavy or severe usage category.
1. Perform
ALL
prior inspections (Pre-use and
Quarterly inspections).
2. Take a sample of the hoist gear oil from the hoist
drum following the oil sampling procedure on page
17 of this manual. The oil sample MUST be taken
BEFORE
changing the gear oil.
Have the sample analyzed for wear metals, viscosity,
signs of overheating, oxidation, moisture and other con-
taminants. If the oil sample contains an unusual amount
of metallic particles, the hoist should be removed from
service and undergo a tear-down inspection.
NOTE: Oil analysis alone cannot detect nor warn
against component fatigue failure.
Annual Inspection:
Semi-annually in Severe Duty Applications.
Documentation of the inspection records must be kept
with the hoist / crane for a minimum of two (2) years
from the date of inspection. This inspection must be car-
ried out by a qualified crane inspector. The annual
inspection
MUST
include, but not be limited, to the fol-
lowing:
1. Perform
ALL
prior inspections (Pre-Use, Quarterly
and Semi-Annual inspections).
2. Change the hoist gear oil, after an oil sample has
been taken. Refer to page 16 of this manual and
Braden Service Bulletin 503 (latest revision) for gear
oil recommendations.
The gear oil should be changed whenever the ambient
temperature changes significantly, indicating that an oil
of a different viscosity range would be more appropri-
ate.
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, unwind all the wire rope off the
cable drum to expose the drum drain plug; then rotate
the drum until the plug is located at the bottom and
remove the plug. Also, remove the drain and vent plug
from the end of the auxiliary brake assembly to drain the
oil from this area.
3. The vent plug must be kept clean and unobstructed.
Whenever the gear oil is changed, remove the vent
plug and clean it in solvent before reinstalling it.
DO
NOT
paint over the vent plug or replace it with a solid
plug or grease fitting.
The gear oil must be changed to remove the wear
particles that impede safe and reliable operation of
the brake clutch, and erode bearings and seals.
Failure to change the gear oil at the recommended
intervals may contribute to intermittent brake slip-
page, loss of load control, injury or death. Refill the
hoist with the recommended lubricant.
Proper oil viscosity is critical to reliable brake clutch
operation. Testing indicates that excessively heavy
or thick gear oils may contribute to intermittent brake
clutch slippage. Make certain the gear oil viscosity
used in your hoist is correct for your prevailing ambi-
ent temperature. Failure to use the proper type and
viscosity of gear oil may result in loss of load control,
property damage, injury or death.
