Loren Cook Company Ventilation Fan 402SQN-B

Drill two 1/4” diameter holes, 180° apart centered approximately between the shaft and the outside diameter of the hub, 3/8” to 1/2” in depth.

Tap 1/4” holes to 5/16” thread with a 5/16” hole tap.

Screw the puller arms to the full depth of the threads into the tapped holes.

Align center of the puller with the center of the shaft.

Ensure all setscrews in the hub are fully removed.

Slowly remove wheel from the shaft.

Use Lisle No. 45000 Sterling Wheel Puller.

Inspect bolts and setscrews for tightness

Inspect belt wear and alignment

Inspect bearings as recommended in the Conditions chart

Remove pulleys from their respective shafts

Clean bores of pulleys and coat the bores with heavy oil

Remove grease, rust, or burrs from the pulleys and shafts

Remove burrs from shaft by sanding

Place fan pulley on fan shaft and motor pulley on its shaft

Install belts on pulleys and align as described in Belt and Pulley Installation

Ensure fan bearings are prelubricated

Check for specialized lubrication instructions on fan labels

Verify bearing grease is a petroleum lubricant in a lithium base conforming to an NLGI #2 consistency

Is the lubricant compatible with the installation?

Adjust lubrication interval based on installation conditions

Lubricate the bearing while the fan is in operation

Pump grease in slowly until a slight bead forms around the bearing seals

Inspect the fan at the following intervals

Inspect and adjust as necessary

Tighten bolts, setscrews, and motor mounting bolts if necessary