Quote:
Originally Posted by pumpkin
I would guess that you are missing a snap ring. The bolts that hold the cap on should have no pressure on them. The bolts are only to hold the cap on, and the most pressure they should see is from the spring. If a snap ring, or a thrust washer, or the inner bearing to support the stub axle are missing or damaged, when under power, the axle would move in and out breaking the little bolts.
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This is an external hub axle. The bolts that hold the lockouts to the bearing hubs also transfer the power to the front tires. That is why they back out and break. As I said, the solution is internal hubs where the torque is transferred with a slug from the external splines on the axle shaft to internal splines on the bearing hub.