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11
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.
Suspension
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
Figure 8 - Assembled Gearing
Maximum Length of Power Cord in Feet
HP Voltage 14 AWG 12 AWG 10 AWG 8 AWG
(1-Phase)
Table 3 - Recommended Conductor Sizes for 1-Phase Hoists
POWER CORD PRECAUTIONS WITH 1-PHASE HOISTS
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.
1 115V 0 30 50 75
230V 120 190 310 490
1/2 115V 40 60 100 150
230V 200 330 520 810
Failure to follow proper lockout/tagout procedures may
present the danger of electrical shock.
TO AVOID INJURY:
Disconnect power and lockout/tagout disconnecting
means before removing cover or servicing this
equipment.