Milwaukee 9566 User Manual

5. Remove four screws attaching gear box cover to gear

housing and remove gear box cover. Limit switch drive shaft
will come along with the cover.

6. Inspect gears for broken or severely worn teeth and inspect

all bearings. Replace as necessary. The overload slip clutch
is factory calibrated and must not be disassembled or
readjusted.

7. Reassemble in reverse order of disassembly making sure

gasket is in place and in good condition. Coat gasket with
Permatex

®

or other gasket cement. Extreme care should be

taken to avoid damage to oil seals.

8. Check all wire terminals to be sure they are properly seated

and in accordance with wiring diagram. Before placing 
hoist back into service, check brake adjustment and limit
switch stops.

Use Replacement Parts List for Basic Hoist and Chaining Parts
to help in repairs in this section (See Figures 12 and 20). The
hoist sections must be separated at the top hook line in order
to inspect the load sheave and chain guides. See CHAIN
REPLACEMENT WITH NO CHAIN IN HOIST, page 8.

While this section is apart, check the following:

• Load sheave

• Chain guides and plates

• Chain

• Chain support (on 2 ton models)

• Bearings

Replace parts as necessary including screws, lockwashers,
etc.

When reassembled, recheck limit switch operation. See LIMIT
SWITCH ADJUSTMENT, page 8.

Milwaukee Electric Tool Corporation
13135 West Lisbon Road
Brookfield, Wisconsin 53005
TEL: (800) 729-3878

Electric hoists require a sufficient power supply. It is especially important with single-phase voltage to ensure that the conductors
running to the hoist from the power source are adequate in size to handle the power requirements of the hoist. Inadequate 
power cables and branch circuits will cause low voltage, high amperage, damage to the hoist, and potential fire hazards.
Such problems can be minimized by using 230V power on 115/230V hoists. The following are recommendations for the conductor
gage size depending on the length, horsepower, and voltage.