Dayton Electric Chain Hoist 3YB96

Warning: Only trained personnel should perform this procedure

Dayton Dem-Kote No. 5X628 multi-purpose oil available?

General purpose spray available?

Sign off on the Limit Switch Shaft lubrication

DISCONNECT HOIST FROM POWER SUPPLY and remove the electrical cover

Remove the spring guide plate from the slots in the limit switch nuts

Turn the slotted nut back to about the center of the threaded screw

Remove the load block assembly from old chain

Remove the chain stripper to detach the chain from the chain anchor and pull it through the load block assembly

Pull the chain out of the chain stripper

Make a 'C' link by grinding through the end link on the load end of the old chain

Attach the new chain to the load end of the old chain using the 'C' link

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.

Following the instructions in the section on GEARING, disassemble the transmission assembly.

Remove the output shaft through the transmission, allowing the load sheave and chain guide to be removed from the bottom of the hoist.

Be care 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\ 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.

Warning: Use SAE 90 gear oil for lubrication

Sign off on the load chain lubrication

IMPORTANT: Before placing hoist in operation, check the limit switch ad-justment.

Limit switches are provided to protect the hoist against damage resulting from overtravel or to allow setting the hook travel within the factory-set limits of travel.; For easy identification and association with the proper direction of travel, the upper and lower limit switch adjusting nuts are color-coded gold and silver respectively.; Each limit nut has 10 slots for fine adjustment, and the increment of adjustment is such that one slot is equivalent to approximately one link of chain travel.

Movement of the limit switch nuts toward or away from each other increases or decreases the hook travel respectively.; Care should be exercised when adjusting either limit of travel.

ADJUSTING UPPER LIMIT (GOLD NUT)

1. Suspend the hoist. For single chain models raise the load block until there is a minimum clearance of 2" from the hoist housing and the top of the block.; Double chain models require a minimum clearance of 1" from the chain support to the top of the load block.

2. DISCONNECT HOIST FROM POWER SUPPLY and remove the electrical cover.

3. With a screwdriver, pry the spring guide plate out of the slots in the limit switch nuts.

4. Turn the slotted gold nut toward its limit switch until the switch "clicks" then turn two slots farther.; Release the spring guide plate and be sure it slips back into the slots in both limit switch nuts. Do not disturb the silver slotted nut if it has been set previously.

ADJUSTING LOWER LIMIT (SILVER NUT)