1.) Probably broken grid filaments. May also be faulty switch. Perform folllowing tests to pinpoint and repair culprit.
2.) Not knowing your skill level of mechanics, I can not say how easy it will be for you. However, I will post the removal/installation procedures so you can decide if this is a job you can perform or not.
Raise and safely support the vehicle.
Remove the wheel and tire assembly.
Remove the brake drum retainers, if installed.
Grasp the brake drum and remove.
If the drum will not slide off with light force, then the brake shoes will need to be backed off as follows:
Remove the rubber plug on the backing plate and insert a screwdriver or small brake adjusting tool into the slot to contact the brake strut and quadrant.
A forward motion of the tool will separate the quadrant from the knurled wheel and allow the brake shoes to retract.
Remove the brake drum.
Make sure the brake drum and shoes are clean of any oils or protective coatings.
Position the brake drum onto the wheel hub.
Install new brake drum retainers if available.
Reinstall the wheel and tire assembly. Torque the lug nuts to 62 ft. lbs. (85 Nm).
Lower the vehicle.
Work the parking brake control several times to adjust the rear brake shoes.
Pump the brake pedal several times to assure a good pedal before attempting to move the vehicle.
Road test the vehicle and check for proper brake system operation.
3.) Sealant will work fine as long as it is made for outdoor use. Just follow the directions on sealant bottle directly and test for leaks. You can also just place a screw back into the hole..
Hope this helps..
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Friday, January 16th, 2009 AT 2:14 AM