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Re: alloy wheels pitted and rusing
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Most wheels on the market today feature a painted surface, machine lip or face with a clear finish. To take care of your alloy wheels without damaging the protective finish frequent washing with a quality car wash, such as McGuire's or Polyglaze, and water is highly recommended.
Periodic use of a bug and stain remover can prevent permanent damage, whilst waxing will protect the alloy wheel finish from the elements. NEVER use abrasive cleaners, steel wool, or polishing compounds. ALWAY's be wary of automatic car washes. SOME use acidic cleaners to remove dirt and grime. Others may use stiff brushes for cleaning alloy wheels and tyres. BOTH of these WILL HARM your Wheels So always ask about equipment and procedures before entering the car wash.
Never allow your alloy wheels or tyres to be STEAM cleaned. Hot steam can dull the paint or clear coat finish on your alloy wheels. NEVER clean HOT Wheels always wait until they cool down. Water on your alloy wheels will dry faster on a hot surface and cause your cleaning solution to dry to quickly leaving spots or a film of soap on your wheels.
Cleaning wheels in direct sunlight also causes the wheel to dry out to quickly, leaving spot's in the finish. This is a particular problem with chrome wheels, and machined faced alloy wheels. Clean your wheels on a regular basis, they are often the dirtiest part of your vehicle and they're constantly exposed to the elements, corrosive brake dust, ocean and sea salt plus the inevitable road tar.
Disc brake dust is a BIG problem. If not REMOVED it can actually burn small marks into the chrome or alloy wheels, which in turn if left untreated can lead to PITTING of your alloy or chrome wheels. Chrome plated wheels are particularly susceptible if left untreated SO please make sure care is taken. Clear coating on your machine lip of face alloy wheels can suffer a similar fate if left untreated.
If you do not clean Chrome Wheels or Alloy Wheels regularly moisture, which harboured in brake dust and grime, can lead to SEVERE pitting and rusting of chrome wheel surfaces. TAKE "PROPER" care otherwise your warranty on your Alloy wheels or Chrome Wheels could be voided.
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sounds like the brake rotors are out of round, check for rust and pitting on the face of the rotors, could be front or rear. If the steering wheel is shaking its most likely in the front, if you are feeling it in the seat rear. These trucks are famous for rear brake issues.
This is a long/hard one to answer as a few things can cause this. First, check the vacuum lines running from the engine down to the front axles for cracks, and make sure you have vacuum to the axle hub. Second, remove and inspect the front wheel bearings, they should be set to proper preload and there should be no signs of water in the hub. And last if there is water in the hub, that most likely means there is rust on the front axle, and the pitting caused by the rust will not allow vacuum to build up and ingage the four wheel drive. the later requires a new front hub kit $$$.
Absolutely, taking certain conditions into account. If the vehicle sat for a long period of time, or is even just parked consistently on moist ground, the bearings will become pitted and unevenly worn. Another reason for premature wear would be hard driving, or even just bad roads. but yes, i just replaced my driver's side wheel bearing and i've only got 40,000 miles!
is a long/hard one to answer as a few things can cause this. First,
check the vacuum lines running from the engine down to the front axles
for cracks, and make sure you have vacuum to the axle hub. Second,
remove and inspect the front wheel bearings, they should be set to
proper preload and there should be no signs of water in the hub. And
last if there is water in the hub, that most likely means there is rust
on the front axle, and the pitting caused by the rust will not allow vacuum to build up and ingage the four wheel drive. the later requires a new front hub kit $$$.
Let me know what you find out. I get the same whoosh/pedal travel, and at this point have NO braking at all. I am also losing fluid nearly as fast as I can put it in if I use the brakes, but I can't find where it's coming out. I even drove on clean snow and don't see any fluid tracks...
Oddly enough if you are going to do it yourself, gmpartsdirect seems to have the best prices for OEM parts.
I am assuming that my rusted/pitted brake lines have failed me. Aaahhh the old money pit.
You say the rear wheel axles and bearings have been replaced, you mention nothing of the front wheels, you have the symptoms of a front wheel bearing being worn out, remove them and check for pitting in the bearing rollers or the bearing races, I am sure you will find a problem. Hope this helps solve your issue with the bearing noise.