Dayton Electric Chain Hoist 3YB84

1. Inspect hooks once daily for cracking, extreme wear or spreading. Replace hooks showing any of these signs.; If the throat openings are spread wider than the maximum permissible 15% increase listed here, the hooks have been overstressed and must be replaced.; Any hook that is bent or twisted more than 10 degrees from the plane of an unbent hook must also be replaced.

2. The hook latches should be inspected to ensure that they close the hook throat opening in a secure manner when a load is applied.; Inspect the hook shank and nut for any stripping of the threads or other damage. The hook nut should be fully restrained by the retaining pin.

3. In addition to above, load hooks should be inspected for cracks by the magnetic particle, dye penetrant or other suitable crack testing inspection method. This should be done at least once a year.;

Deficiencies in Operating Controls

Deficiencies in Brake Mechanism

Inspect Suspension Lug (if used)

1. For major repairs or when the hoist is to be sectioned in the suspension area, it will be necessary to move the hoist to a workbench or table.

2. For repairs which can be done by removing the electrical cover only, the hoist need not be moved.

Lowering the hoist to a convenient working level is desirable.

NOTE: If you do not have an experienced mechanic to do your repair work, we recommend that you send your hoist to an approved service station for repairs.; Use authorized repair parts only.

Remove load and disconnect hoist from power supply before starting to do any repairs or to take any sections apart.

The following repair instructions will help you in understanding repair procedures.

1. Remove the electrical cover. The control panel, brake assembly, and limit switch assembly are located under the cover.; The contactor and terminal block are accessible without further disassembly. It will be necessary to remove the electrical panel to replace the transformer, solenoid, limit switches, or brake parts.

Lubricate Load Chain with SAE 90 gear oil

Frequency of lubrication depends on type of service

Heavy service - Daily lubrication

Normal service - Weekly lubrication

Infrequent service - Monthly lubrication

Was the load chain lubricated according to the service type?

Sign off on the load chain lubrication

Warning: Ensure the machine is turned off before starting the lubrication process

Select the type of lubricant used

Was the lubrication successful?

Sign off on the lubrication process