Inspection And Maintenance Check List - Milwaukee 9560 Operator's Manual

Milwaukee Electric Tool Corporation
13135 West Lisbon Road
Brookfield, Wisconsin 53005
TEL: (800) 729-3878
TROUBLE SHOOTING (Continued)
Motor brake noise or chatter (while starting hoist)
1. Brake needs adjustment
2. Low voltage
Motor brake "buzz" (anytime hoist is running)
1. Brake needs adjustment
2. Broken shading coil on brake frame
Type of Hoist ______________________________________________________
Location _________________________________________________________
Manufacturer______________________________________________________
Item
Operating Controls
Limit Switches
Brake Mechanism
Hooks
Suspension Lug (if used)
Chain
Hook and Suspension
Lug Connections
Pins, Bearings, Bushings
Shafts, Couplings
Nuts, Bolts, Rivets
Sheaves
Housings, Load Block
Wiring and Terminals
Hoist Reversing
Contactor, other Electrical
Apparatus
Supporting Structure
and Trolley (if used)
Nameplates, Decals,
Warning Labels
NOTE: Refer to Maintenance and Inspection Sections of the Hoist-Maintenance Manual for further details.
FREQUENCY OF INSPECTION
Frequent — Indicates items requiring inspection daily to monthly. Daily inspections may be performed by the operator if properly designated.
Periodic — Indicates items requiring inspection monthly to yearly. Inspections to be performed by or under the direction of a properly designated period. The exact
period of inspection will depend on frequency and type of usage. Determination of this period will be based on the user's experience. It is recommended
that the user begin with a monthly inspection and extend the periods to quarterly, semi-annually or annually based on user's monthly experience.
Figure 10A — Recommended Inspection and Maintenance Check List
NOTE: This inspection and maintenance check list is in accordance with our interpretation of the requirements of the Safety
Standard for Overhead Hoists ASME B30.16. It is, however, the ultimate responsibility of the employer/user to interpret and
adhere to the applicable requirements of this safety standard.
1. See BRAKE ADJUSTMENT, page 9.
2. Check voltage at the hoist reversing contactor while the hoist is lifting a load. Voltage should be no less than 90% of
the voltage specified. 115 volt hoists are particularly subject to voltage drop problems due to their high current draw.
Conversion to 230 volt operation is suggested in extreme cases.
1. See BRAKE ADJUSTMENT, page 9.
2. Replace shading coil or complete brake frame assembly.

INSPECTION AND MAINTENANCE CHECK LIST

ELECTRIC POWERED OVERHEAD CHAIN HOIST
Frequency of Inspection
Frequent Periodic
Daily Monthly 1-12 Mo.
* * * Any deficiency causing improper operation
* * * 1. Any deficiency causing improper operation
2. Pitting or deterioration
* * * 1. Slippage or excessive drift
2. Glazing, contamination or excessive wear
* * * Excessive throat opening 15% bent or twisted more than 10
degrees, damaged hook latch, wear, chemical damage,
worn hook bearing. To find cracks, (use dye penetrant,
magnetic or other suitable detection methods)
* * * Cracks, excessive wear or other damage which may impair
the strength of the lug. To find cracks, (use dye penetrant,
magnetic particle or other suitable detection methods)
* * * Inadequate lubrication, excessive wear or stretch, cracked,
damaged or twisted links, corrosion or foreign substance
* Cracks, bending, stripped threads
* Excessive wear, corrosion, cracks, distortion
* Looseness, stripped and damaged threads, corrosion
* Distortion, cracks, and excessive wear.
Build-up of foreign substances
* Cracks, distortion. Excessive wear, internal build-up of
foreign substances
* Fraying, defective insulation
* Loose connections, burned or pitted contacts
Damage or wear which restricts ability to support
* imposed loads
Missing, damaged or illegible
*
Capacity (Tons) ____________________________________________
Original Installation Date _____________________________________
Manufacturer's Serial No. ____________________________________
Possible Deficiencies
14
OK Action
Required