Spindle Nut Torque for Installing Trailer Hubs

Question:

what is the torque on the retainer nut on hub 8-385-81

asked by: Martial T

Helpful Expert Reply:

When installing the castle nut on the end of the spindle to install a hub like the part # 8-385-81SP, there is no specific torque rating.

The nut is ran down until there is no side to side play in the hub, and then backed off to the next notch in the castle nut so the tang washer or cotter pin can secure the nut. Over-tightening the castle nut can damage the bearings, races and spindle.

If you click on the video link I provided, and fast forward to the 4:45 minute mark, you can see how we do it.

expert reply by: Jameson C