Global Machinery Company Sierra 1999 - Manual (Page 334)

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NOTICE:
D Using the wrong fluid can badly damage
brake system parts. For example, just a few
drops of mineral
- based oil, such as engine
oil, in your brake system can damage brake
system parts so badly that they’ll have to be
replaced. Don’t let someone put in the
wrong kind of fluid.
D If you spill brake fluid on your vehicle’s
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on your vehicle. If you do, wash it off
immediately. See “Appearance Care” in
the Index.
Brake Wear
Your vehicle has four - wheel disc brakes.
Disc brake pads have built - in wear indicators that make a
high - pitched warning sound when the brake pads are worn
and new pads are needed. The sound may come and go or
be heard all the time your vehicle is moving (except when
you are pushing on the brake pedal firmly).
CAUTION:
The brake wear warning sound means that soon
your brakes won’t work well. That could lead to
an accident. When you hear the brake wear
warning sound, have your vehicle serviced.
NOTICE:
Continuing to drive with worn - out brake pads
could result in costly brake repair.