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How to Check the Hub Assembly on a 2002 Venture

2002 Chevrolet Venture minivans use a sealed hub design for both front wheels. In this design, the wheel hub and bearing are pressed together in a non-serviceable unit. As the vehicle ages, the bearing portion of the hub unit can fail, causing an excessive grinding or humming noise when the vehicle is driven, especially at highway speeds. In addition to bearing failure, the hub flange can become warped causing similar symptoms. A dial indicator must be used to accurately measure the looseness and runout of the wheel hub unit in order to accurately diagnose a faulty assembly.

Instructions

1

Lift the front of the vehicle and support it with jack stands under each control arm in order to load the ball joint. Check to make sure that the vehicle is securely supported. Loosen the hub cap nuts, if equipped, with a 19 mm metric socket and ratchet. Remove the hub cap.

2

Secure a dial indicator to base stand in front of the wheel. Adjust the dial indicator so its plunger is at a 90-degree angle to flat, inside face of the wheel, adjacent to the lug nuts.

3

Zero the dial indicator, then grip the top of the tire with both hands. Push and pull on the top of the tire; towards the tire on the other side and then back towards your body.

4

Note the reading on the dial indicator while moving the tire back and forth. If the movement exceeds 0.005-inches, then the wheel bearing has excessive play and must be replaced.

5

Lift the vehicle off of the jack stands using the automotive jack and remove the stands. Set the vehicle back on the ground. Break the lug nuts loose using a 19 mm lug nut wrench. Raise the vehicle and support it once again with the jack stands. Remove the lug nuts and wheel.

6

Reinstall two lug nuts to hold the rotor in place. Install a C-clamp over of the brake caliper so the fixed end of the clamp is resting against the inside of the caliper and the movable end is resting against the outboard brake pad. Tighten the C-clamp to squeeze the brake caliper piston back into the caliper. This allows the brake caliper to slide off easily.

7

Remove the bolts holding the brake caliper bracket to the steering knuckle with a ratchet and a metric socket. Pry the brake caliper bracket and caliper away from the rotor as an assembly and tie it to the coil spring with a length of mechanics wire. Dont allow it to hang from the brake hose.

8

Remove the lug nuts holding the rotor in place and remove the rotor from the steering knuckle. Clean the hub flange with a wire brush to remove any corrosion. Shift the transmission into neutral.

9

Set the dial indicator against the hub flange at a 90-degree angle, and then zero the dial indicator. Rotate the flange clockwise and note the reading on the dial indicator. If the needle movement exceeds .005-inches, then the hub flange has excessive run out and the hub and bearing assembly must be replaced.