Chevrolet Sonic Repair Manual: Brake Pedal Travel Measurement and Inspection
Special Tools
CH-28662 Brake Pedal Effort Gauge
For equivalent regional tools, refer to Special Tools.
- With the ignition OFF and the brakes cool, apply the brakes 3–5 times, or until the brake pedal becomes firm, in order to deplete the brake booster power reserve.
- Install the CH-28662 gauge (1), or equivalent, to the brake pedal (3).
- Measure and record the distance (a) from the brake pedal (3) to the rim of the steering wheel (2). Note the points of measurement.
- Apply and maintain a force of 445 N (100 lb) to the brake pedal, as indicated on the CH-28662 gauge (1), or equivalent.
- While maintaining 445 N (100 lb) of force to the brake pedal (3), measure and record the distance (b) from the same point on the brake pedal (3) to the same point on the rim of the steering wheel (2).
- Release the brake pedal (3) and repeat steps 4 and 5 to obtain a second measurement. After obtaining a second measurement, proceed to step 7.
- Average the first and second measurements recorded for the 2 applies of the brakes.
- Subtract the initial unapplied distance (a), from the average applied distance (b)
to obtain the brake pedal travel measurement (c).
Specification
Maximum brake pedal travel – measured with the ignition OFF, brake booster power assist depleted, and the brakes cool.
Brake Pedal Pushrod Inspection
Disconnect the brake pedal pushrod (2) from the brake pedal.
Reposition the pedal pushrod boot (1) toward the front of the vehicle to
expose as much of the pedal pushrodR ...
Parking Brake
...
Other materials:
Retained Accessory Power (RAP)
These vehicle accessories may be used for up to 10 minutes after the engine is
turned off:
Audio System
Power Windows
Sunroof
The power windows and sunroof will continue to work for up to 10 minutes or until
any door is opened.
The radio will work when the key is in ON/RUN or ACC/ACC ...
Valve Guide Reaming, and Valve and Seat Grinding
Valve Cleaning Procedure
Use soft bristle wire brush to clean any carbon build-up from the valve
head. DO NOT use a wire brush on any part of the valve stem. The valve stem
is chrome plated to provide enhanced wear characteristics. Wire brushing
the stem could remove the chr ...
Input Shaft Support Replacement (Gen 1)
Input Shaft Support Replacement
Callout
Component Name
1
3-5 Reverse and 4-5-6 Clutch Fluid Seals (Qty: 4)
Note:
Discard the fluid seals. They are not reusable.
Refer to 3-5-Reverse an ...
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