10
The following minimum service intervals are speci-
fied for operating hours of the prime mover.
A regular program of preventive maintenance for your plan-
etary hoist is strongly recommended to minimize the need
for emergency servicing and promote safe, reliable hoist
operation.
Field experience, supported by engineering tests, indicate
the three service procedures listed below are the MOST criti-
cal to safe, reliable hoist operation and must be observed:
• Regular gear oil changes – every 1,000 hours or six
months
• Use of proper gear oil – recommended type for prevail-
ing ambient temperature
• Periodic disassembly and inspection of all wear items
1.
OIL LEVEL
The gear oil level should be checked every 500 operating
hours or three months, whichever occurs first. To check the
oil level, remove the large plug located in the center of the
drum support. The oil should be level with the bottom of this
opening or approximately half-way up in a sight glass.
This
is important because of the accelerated wear that can be
caused by insufficient lubricating oil in the hoist.
If addi-
tional oil is needed, refer to the section of this manual, “Rec-
ommended Planetary Gear Oil.”
2.
OIL CHANGE
The gear oil should be changed after the first 100 hours of
operation, then every 1,000 operating hours or six months,
whichever occurs first. Gear oil must be changed to remove
wear particles that impede the reliable and safe operation of
the brake clutch and erode bearings, gears and seals. Failure
to change gear oil at these suggested minimum intervals may
contribute to intermittent brake slippage which could result
in property damage, severe personal injury, or death.
The gear oil should also be changed whenever the ambient
temperature changes significantly and an oil from a different
temperature range would be more appropriate. Oil viscosity
with regard to ambient temperature is critical to reliable brake
clutch operation. Our tests indicate that excessively heavy or
thick gear oil may contribute to intermittent brake clutch
slippage. Make certain that the gear oil viscosity used in your
hoist is correct for your prevailing ambient temperature. Fail-
ure to use the proper type and viscosity of planetary gear oil
may contribute to brake clutch slippage which could result in
property damage, severe personal injury, or death. Refer to
the section in this manual, “Recommended Planetary Gear
Oil,” for additional information.
PREVENTIVE MAINTENANCE
