11
Country Club Road
P.O. Box 779
Wadesboro, NC 28170 USA
TEL: (800) 477-5003
FAX: (800) 374-6853
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
that the 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 that they are properly
seated and in accordance with the correct wiring diagram.
Before placing the hoist back into service, check the brake
adjustment and limit switch settings.
Suspension
Refer to Figures 8A & 8B.
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
• Chain guides and plates
• Bearings
• Chain support (on 2 ton models)
Replace parts as necessary including screws, lockwashers,
etc. When reassembled, recheck the limit switch settings. See
LIMIT SWITCH ADJUSTMENT, page 8.
Periodic inspections of the top suspensions can be made
without disassembly. For more extensive inspections the lug
maybe removed as follows:
1. Disconnect the hoist and remove it to workbench.
2. Remove the lug retaining screw.
3. Remove the lug retainer.
4. Remove the lug.
Care must be taken during reassembly to have the hook in
proper orientation. Refer to figures 8A & 8B for proper
orientation. The transmission must be disassembled in order to
inspect load sheave and chain guide (see CHAIN
REPLACEMENT WITH NO CHAIN IN HOIST, page 8). When
reassembled, recheck the limit switch settings (See LIMIT
SWITCH ADJUSTMENT, page 8).
Figure 7 - Assembled Gearing
M a x i m u m L e n g t h o f P o w e r C o r d i n F e e t
HP
Voltage
14 AWG
12 AWG
10 AWG
8 AWG
(1-Phase)
Table 5 - Recommended Conductor Sizes for 1-Phase Hoists
1/4
115V
75
120
190
300
230V
350
560
900
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
Figure 8A - Single Chain Lug Orientation
Figure 8B - Double Chain Lug Orientation
For more information contact: Sievert Crane and Hoist, (708) 771-1600, parts@sievertelectric.com, www.sievertcrane.com
