Exhaust System - Chevrolet 1970 Owner's Manual

application. Parking brake adjustment should be
checked whenever brake linings are checked, and
front wheel bearings should be lubricated whenever
brake drums are removed. Owners should periodically
check parking brake function by parking on a steep
hill, restraining the vehicle with the parking brake
only. Following this, check the "Park" mechanism of
automatic transmissions if so equipped, by releasing
all brakes with the transmission selector lever in "P"
position. If either mechanism does not hold, have
needed adjustments or repairs made by a competent
mechanic.
The brake fluid in the master cylinder should be
checked at every oil change. Any significant loss gen-
erally means that a malfunction is developing in the
system. On cars with disc brakes, a low fluid level
in the brake reservoir could be an indicator that the
disc brakes need replacing. If loss is noted, the calise
should be determined and corrective action taken
immediately. Any noticeable increase in brake pedal
travel should also be brought to the attention of your
serviceman, since this could also indicate brake fluid
loss, improper brake adjustment or other brake mal-
functions. Check your brake warning light when you
start your vehicle, as set' forth in the text. Refer to
the index for the page number of this information.
For detailed information on the function of automatic
brake adjusters and how to use them on vehicles so
equipped, refer to the appropriate page number in
the index.
BRAKE LINES AND BRAKE HOSES
Brake lines and brake hoses should also be periodi-
cally checked for proper attachment, leaks, cracks,
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chafing, deterioration, etc. Ask your serviceman to
check brake lines and hoses when your vehicle is on
the hoist for oil change or lubrication service. Any
questionable parts noted should be replaced immedi-
ately by a qualified mechanic.
EXHAUST SYSTEM
Each time the vehicle is raised for lubrication or oil
change service, the complete exhaust system and ad -
jacent body areas should be inspectec! for broken,
damaged, or mispositioned parts, deterioration, open
seams or loose connections, which could permit ex-
haust fumes to seep into the passenger compartment.
Exhaust system leaks may sometimes be indicated by
excessive under-vehicle noise or the smell of exhaust
fumes inside the vehicle. Leaks may also be indicated
by "smoke" coming from under the vehicle after
starting, particularly on a cold day. Any signs of leaks
or other exhaust system deterioration should be
discussed with your serviceman and necessary cor-
rections made immediately. Exhaust system pipes
and resonators rearward of the mufflers should be
replaced whenever a new muffler is installed.
LIGHTS
As with any household light bulbs, the light bulbs tn
your vehicle will eventually burn out and require
replacement. License plate lights, side marker lights,
headlamps,
parking lamps, tail lamps, brake lights,
and all other lights, including turn signals and hazard
warning flashers should be checked periodically. Have
your serviceman check them during a regular main-
tenance visit or have a member of your family observe