Occasionally you will need to change a wheel stud because the treads are damaged or the stud broke while torquing on the bolt. The wheel stud is what fastens the rim to the hub. They are typically pressed into location which allows the knurls on the stud to grab the inside of hole. This creates a very tight fit which is necessary because a wheel lug can be torqued up to 100 foot-pounds. This assures the wheels don't come off at an unexpected time.
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Things you need
- Jack stand
- Car jack
- Wheel chocks
- Sledge hammer
- Lug wrench
- Slotted screwdriver
Park the trailer on a flat surface a chock the opposite side's tire to the wheel you want to fix. Jack the trailer off the ground and place the jack stand under the axle so it supports its weight with the wheel off the ground. Remove the jack.
Remove the lug nuts with a lug wrench and remove the rim and tire from the trailer.
Pry the grease cap off the centre of the hub with a slotted screwdriver. Bend the retaining pin so that it is straight and pull it out of its slot with pliers.
Loosen the castle nut from the centre and gently pull the hub off the trailer without disturbing the bearings.
Secure the hub to a sturdy work bench so that the bolt is facing upwards and is located past the edge of the table with two C-clamps.
Strike the end of the bolt with the sledge hammer making sure not to damage the hub. This will break the wheel stud from its location. Remove the wheel stud. If the bolt has broken off flush you will need to use a steel punch to tap it through the hole.
Turn the hub over and fasten it in the same fashion to the table up-side-down. Place the new wheel stud in the hole so that the bolt head is now facing up.
Strike the bolt until you hear the distinct sound of it snapping into place. If your bolt is particularly difficult to seat you may need to have it pressed into place. A local mechanic shop can do this for you at a minimal cost.
Tips and warnings
- Wear safety glasses when removing and replacing the stud.
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