Dayton Electric Chain Hoist 3YB85

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

Lubrication done with SAE 30 gear or motor oil

Upload a photo of the lubricated bearing

Sign off on the lubrication process

Lubricate Load Chain with SAE 90 gear oil

Was the load chain lubricated according to the service type?

Sign off on the load chain lubrication

Proper lubrication is necessary for a long and relatively trouble-tree hoist operation.; Refer to the following and the RECOMMENDED LUBRICATION SCHEDULE for lubrication points, type of lubricant, and frequency of lubrication.

LOAD CHAIN.; Clean the load chain with acid-free solvent and coat with SAE 90 gear oil. Wipe excess oil to prevent dripping. Never apply grease to the chain.

GEARING.; The gear case of this hoist is filled at assembly with approximately 1½ pints of SAE 90 EP gear oil.; Check oil level by removing the oil level check plug from the side of the hoist. With the hoist hanging level, gear oil should be even with the hole.

BEARINGS. All bearings except hook and idler sheave bearings are lubricated at the factory and should not require additional lubrication. Noisy or worn bearings should be replaced.

LIMIT SWITCH SHAFT.; Remove any dirt accumulation and spray with a general purpose lubricant.

HOOK BEARING.; Apply a few drops of SAE 30 gear or motor oil around the edge of the bearing.

IDLER SHEAVE BEARING (BUSHING).; Disassemble load block and apply a light coat of NLGI #2 grease, or equivalent, inside of bearing.;

DISCONNECT HOIST FROM POWER SUPPLY and move hoist to a work table. Do not remove the electrical cover.

Detach the chain stripper from the bottom of the hoist.

Disassemble the transmission assembly following the instructions in the section on GEARING.

Remove the output shaft through the transmission, allowing the load sheave and chain guide to be removed from the bottom of the hoist. Be careful not to lose the spacer that is between the load sheave and the bearing on the motor end.

NOTE: Inspect chain guides and load sheave for wear, replace as needed.

Lay the new chain over the load sheave. Allow about 15 inches of chain below the hoist on the slack end. Be sure the welds of the upstanding links are out away from the load sheave and the proper orientation is observed for attachment of the slack end. Also be sure the load hook assembly (if already attached to the chain) is toward the center of the hoist or to your right looking from the transmission end.

Reinstall the chain guide in the housing. Grease the splined bore of the load sheave, then position the load sheave and spacer in the housing.

Reassemble the output shaft and transmission.

Pass the new chain through the opening in the chain stripper.

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.;