Chevrolet Sonic Repair Manual: Parking Brake Adjustment (Drum Brake)
Note:
The park brake cable adjusting nut is a nylon lock type. Use
ONLY HAND TOOLS whenever tightening or loosening the adjusting nut.
- Apply and fully release the park brake several times. Verify that the park
brake lever releases completely.
- Turn ON the ignition. Verify the red BRAKE warning lamp is not illuminated.
- If the red BRAKE warning lamp is illuminated, verify the following:
- The park brake lever is in the fully released position and against the stop.
- There is no slack in the park brake cables.
If the red BRAKE warning lamp remained illuminated and there were no other visible
causes, refer to Symptoms - Hydraulic Brakes.
Turn OFF the ignition.
Remove the front floor console. Refer to Front Floor Console Replacement.
With the park brake lever in the released position, loosen the adjusting nut (1)
enough to completely relieve tension on the front cable.
Raise and support the vehicle. Raise the vehicle just enough to allow rear tire
and wheel assembly removal and rear drum adjustment. Refer to Lifting and Jacking
the Vehicle.
Remove the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and
Installation.
Adjust the rear drum brakes. Refer to Drum Brake Adjustment.
Ensure there is no brake shoe drag after adjustment by rotating the brake drums.
If drag exists, re-center the brake shoes and perform the brake shoe adjustment
again.
Install 2 wheel nuts to the wheel studs and firmly hand tighten in order to
retain the brake drums.
Fully release the park brake lever.
Tighten the park brake cable adjusting nut (1) until the threaded portion of
the front park brake cable extends beyond the adjusting nut approximately 27 mm
(1.06 in).
Apply the park brake lever.
Attempt to rotate the rear brake drums. There should be no rotation forward
or rearward.
Fully release the park brake lever.
Verify the park brake is released by rotating the rear brake drums. The drums
should rotate freely and exhibit no brake shoe drag.
If the drums do not rotate freely, repeat the park brake cable adjustment procedure.
Raise the park brake lever 3 detent positions and attempt to rotate the rear
brake drums:
- One of the brake drums should not rotate forward or rearward.
- The other brake drum should not rotate forward or rearward, or should require
substantial effort to rotate.
Raise the park brake lever one additional detent position and attempt to rotate
the rear brake drums.
Verify that the left and right brake drums cannot be rotated.
Remove the wheel nuts retaining the brake drums.
Install the rear tire and wheel assemblies. Refer to Tire and Wheel Removal
and Installation.
Lower the vehicle.
Install the front floor console. Refer to Front Floor Console Replacement.
Release the park brake lever.
System Component Description
The drum brake system consists of the following:
Drum Brake Shoes
Applies mechanical output force, from hydraulic brake wheel cylinders,
to frict ...
Removal Procedure
Remove the front floor console. Refer to Front Floor Console Replacement.
Ensure that the parking brake lever is in the fully released position.
Us ...
Other materials:
Rear Window and Outside Mirror Defogger
(Rear Window Defogger): Press to
turn the rear window and outside mirror defogger on or off. An indicator light comes
on to show that the feature is on.
The rear window defogger turns off after about 10 minutes. It can also be turned
off by pressing again or by turning
the ignition to ACC ...
Power Door Locks Description and Operation
Door Lock System Components
The power door lock system consists of the following components:
Driver door lock switch
Child door lockout switch
Door lock actuators in each of the doors
Body control module (BCM)
Underhood fuse block (Contains door lock PCB relay)
...
Fuel System Description
Fuel System Overview
The fuel system is an electronic returnless on-demand design. A returnless
fuel system reduces the internal temperature of the fuel tank by not returning
hot fuel from the engine to the fuel tank. Reducing the internal temperature
of the fuel tank results in lo ...
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