50
NABRICO DF-1 N ELECTRIC WINCH Owner’s Manual
OM-DF1-021-A
DRIVESYSTEMS
TROUBLESHOOTING
RETAIN FOR FUTURE USE
Troubleshooting
This section identifi es some of the most common issues involved with NORD Gear speed reducers , and provides
recommendations to assist you in defi ning and answering your questions as you work with our products. You may also
contact our Engineering/Application departments if your questions are not answered in the table below.
U19000 - 1 of 1
Problem With the Reducer
Possible Causes
Suggested Remedy
Runs Hot
Overloading
Load exceeds the capacity of the
reducer
Check rated capacity of reducer, replace
with unit of suffi cient capacity or reduce
the load.
Improper lubrication
Insuffi cient lubrication
Check lubricant level and adjust up to
recommended levels
Excessive lubrication
Check lubricant level and adjust down to
recommended levels.
Wrong lubrication
Flush out and refi ll with correct lubricant
as recommended
Runs Noisy
Loose foundation bolts
Weak mounting structure
Inspect mounting of reducer. Tighten
loose bolts and/or reinforce mounting and
structure.
Loose hold down bolts
Tighten bolts
Failure of bearings
May be due to lack of lubricant
Replace bearing. Clean and fl ush reducer
and fi ll with recommended lubricant.
Overload
Check rated capacity of reducer.
Insuffi cient lubricant
Level of lubricant in reducer not
properly maintained.
Check lubricant level and adjust to factory
recommended level.
Output shaft
does not turn
Internal parts are
broken or missing
Overloading of reducer can cause
damage
Replace broken parts. Check rated
capacity of reducer.
Key missing or sheared off on
input shaft.
Replace key.
Coupling loose or disconnected
Properly allign reducer and coupling.
Tighten coupling.
Oil Leakage
Worn seals
Caused by dirt or grit entering
seal.
Replace seals. Autovent may be clogged.
Replace or clean.
Unit runs hot or leaks
Overfi lled reducer
Check lubricant level and adjust to
recommended level.
Vent clogged.
Clean or replace, being sure to prevent any
dirt from falling into the reducer.
Incorrect fi ll level
Improper mounting position, such
as wall or ceiling mount of
horizontal reducer.
Check mounting position on the name tag
& verify with mounting chart in manual.
www.nord.com/docs
06.09.09
NORD Gear Corporation
Toll Free in the United States: 888.314.6673
NORD Gear Limited
Toll Free in Canada: 800.668.4378
Summary of Contents for DF-1 N Series
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