1
Red Brake Warning Lamp Diagnosis
Meets NATEF Task: (A5-B-11) Inspect, test and/or replace components of brake warning light
system. (P-3)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Does the vehicle use a brake fluid level sensor?
___ Yes ___ No
(If yes, describe the location: __________________________________.)
_____ 2. Does the vehicle use a pressure differential
switch?
___ Yes ___ No
(If yes, describe the location: _________________________________________.)
_____ 3. With the ignition key on, engine off (KOEO), apply the parking brake. Did the red
brake warning lamp light?
___ Yes ___ No
(If no, why not? ___________________________________________________)
_____ 4. Unplug the wiring connector from the brake fluid level sensor or pressure differential
switch. With the key on, engine off (KOEO), did the red brake warning lamp light?
___ Yes ___ No
(It should not have come on.)
_____ 5. State the vehicle manufacturer’s recommended inspection, testing, and replacement
procedures:
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
2
Brake Stop Light Switch
Meets NATEF Task: (A5-F-5) Check operation of brake stop light system and determine
necessary action. (P-1)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Check the service information for the specified testing procedures to determine the
proper operation and adjustment of the brake stop light switch. ________________
_______________________________________________________________
_______________________________________________________________
_____ 2. Check for the proper operation of the brake (stop) lights including the center highmounted stop light (CHMSL).
OK ____
NOT OK ____
If not OK, determine the necessary action needed to restore proper operation.
_______________________________________________________________
_______________________________________________________________
_____ 3. Describe the location of the brake switch _________________________________
_____ 4. Describe how to adjust the brake switch (if adjustable) ______________________
_______________________________________________________________
_____ 5. List the trade number of the brake light bulbs, including the center high-mounted stop
light.
Rear brake light trade number = _______________
Center high-mounted stop light trade number = ______________
_____ 6. Based on the test results, what is the necessary action? _________________________
_________________________________________________________________
_________________________________________________________________
3
Brake Hoses and Lines
Meets NATEF Task: (A5-B-6, A5-B-7, and A5-B-8) Brake hose and line inspection and
replacement. (P-1)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Check service information for the specified procedure to follow when inspecting
and/or replacing brake hoses and lines. Describe the recommended procedures.
__________________________________________________________________
__________________________________________________________________
_____ 2. Based on the inspection of the brake lines and hoses,
what is the necessary action?
________________________________________
________________________________________
________________________________________
________________________________________
_____ 3. Using the specified diameter of brake line, perform the
two brake line flaring procedure.
_____ Double flare
Instructor’s check ___________
_____ ISO (bubble) flare
Instructor’s check ___________
_____ 4. Bend brake line as needed.
Instructor’s check ___________
4
Brake Fluid
Meets NATEF Task: (A5-B-9 and A5-B-13) Brake fluid usage and test for contamination.
(P-1)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Check service information for the specified brake fluid and when to check for the
proper level.
A. Specified brake fluid = ____________________________________________
B. Specified brake fluid level _________ (describe the location) _____________
_____ 2. Check service information for the recommended procedure to follow to determine if
the brake fluid is contaminated. Describe the specified procedure:
__________________________________________________________________
__________________________________________________________________
_____ 3. Check all that apply according to service information.
____ Perform a visual inspection.
____ Place the sample in styrofoam cup and check for eating away of the cup at
the top of the fluid level line.
____ Use a test strip.
____ Use a brake fluid boiling temperature tester
____ Other (describe) ___________________________________________
5
Brake Bleeding
Meets NATEF Task: (A5-B-12) Bleed and/or flush the brake system.
(P-1)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Check service information for the specified procedure to follow when bleeding and/or
flushing the brake system. Describe the specified procedure.
_________________________________________________________________
_________________________________________________________________
_____ 2. Perform a brake bleeding/flushing procedure.
Instructor’s check _____________
_____ 3. Which method(s) was used (check all that apply)?
____ Normal (single stroke) method
____ Pressure bleeding
____ Vacuum bleeding
____ Gravity bleeding
____ Brake system was flushed
_____ 4. Was the use of a scan tool needed or suggested?
____ Yes (What scan tool?) ________________________________________
____ No
6
Wheel Bearing Diagnosis
Meets NATEF Task: (A5-F-1) Determine wheel bearing noises, wheel shimmy, and vibration
concerns; determine necessary action. (P-1)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
Worn or defective wheel bearings can cause a variety of concerns including:
Noise – usually a growl or rumble that changes tone with vehicle speed.
Wheel Shimmy – Can occur if the bearings are loose or excessively worn.
Vibration – Can occur if the bearings are loose or excessively worn.
_____ 1. Check service information for the
recommended test procedures to follow to
diagnose possible wheel bearing noise.
______________________________
______________________________
_____ 2. Drive the vehicle and check for abnormal
noise that could be caused by a defective
wheel bearing.
OK _____
NOT OK _____
HINT: A defective wheel bearing often sounds like a noisy winter tire but does
not change tone when the vehicle is being driven over various road surfaces.
_____ 3. Hoist the vehicle safely and check for excessive wheel bearing play and/or noise.
OK _____
NOT OK _____
Describe the faults and location: _______________________________________
_____ 4. Based on the diagnosis, what is the necessary action? _________________________
_________________________________________________________________
7
Wheel Bearing Service
Meets NATEF Task: (A5-F-2) Remove, clean, inspect, repack, and install wheel bearings and
replace seals; install hub and adjust bearings. (P-1)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Remove the wheel cover and the hub dust cap (grease cap).
_____ 2. Remove and discard the cotter key.
_____ 3. Remove the spindle nut, washer and outer
bearing.
_____ 4. Remove inner and outer bearing and grease
seal.
_____ 5. Thoroughly clean the bearing in solvent and
denatured alcohol or brake cleaner and blow
it dry with compressed air.
_____ 6. Closely inspect the bearing for wear or damage.
_____ 7. Show the instructor the cleaned bearing.
Instructor's OK _______________
_____ 8. Repack the bearing with the correct type of wheel bearing grease.
_____ 9. Install a new grease seal using a seal installing tool.
_____ 10. Correctly adjust the bearing preload:
____ Install the spindle nut and while rotating the tire assembly, tighten (snug
only, 12 to 30 lb.-ft.) with a wrench to "seat" the bearing correctly in the
race.
_____ While still rotating the tire assembly, loosen the nut approximately 1/2 turn
and then hand tighten only.
_____ Install a new cotter key (the common size is 1/8” diameter and 1.5 inches
long).
_____ Bend the ends of the cotter key up and around the nut to prevent
interference with the dust cap.
_____ 11. Install the hub dust cap (grease cap) and wheel cover.
8
Wheel Bearing and Race Replacement
Meets NATEF Task: (A5-F-6) Replace wheel bearing and race. (P-2)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Remove the wheel cover and the hub
dust cap (grease cap).
_____ 2. Remove and discard the cotter key.
_____ 3. Remove the spindle nut, washer and outer bearing.
_____ 4. Remove inner and outer bearing and grease seal.
_____ 5. Remove the bearing race using the specified tool.
_____ 6. Show the instructor the removed race.
Instructor's OK _______________
_____ 7. Install new race using the correct bearing race installation tool.
_____ 8. Show the instructor the new race.
Instructor's OK _______________
_____ 9. Install a new grease seal using a seal installing tool.
_____ 10. Pack the new bearing with the correct type of wheel bearing grease.
_____ 11. Correctly adjust the bearing preload:
____ Install the spindle nut and while rotating the tire assembly, tighten (snug
only, 12 to 30 lb.-ft.) with a wrench to "seat" the bearing correctly in the
race.
_____ While still rotating the tire assembly, loosen the nut approximately 1/2 turn
and then hand tighten only.
_____ Install a new cotter key (the common size is 1/8” diameter and 1.5 inches
long).
_____ Bend the ends of the cotter key up and around the nut to prevent
interference with the dust cap.
_____ 12. Install the hub dust cap (grease cap) and wheel cover.
9
Inspect and Replace Wheel Studs
Meets NATEF Task: (A5-F-7) Inspect and replace wheel studs. (P-1)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Hoist the vehicle safely.
_____ 2. Remove all four wheels.
_____ 3. Carefully inspect the wheel studs for
excessive rust or damage.
LF = OK _____
NOT OK _____ Describe fault ______________________
RF = OK _____
NOT OK _____ Describe fault ______________________
LR = OK _____
NOT OK _____ Describe fault ______________________
RR = OK _____
NOT OK _____ Describe fault ______________________
_____ 4. Clean the threads using a stiff wire brush.
CAUTION: Many vehicle manufacturers specify that grease or oil should not be
used on the threads of wheel studs. If a lubricant is used on the threads, the lug
nuts could loosen during vehicle operation, which could cause a wheel to fall off
resulting in a collision and possible personal injury.
_____ 5. Worn or damaged studs should be replaced. Check the service information for the
specified procedure for replacing wheel studs on the vehicle being serviced.
__________________________________________________________________
_____ 6. Which stud(s) were replaced? _____________________________________
10
Sealed Wheel Bearing Replacement
Meets NATEF Task: (A5-F-8) Remove and reinstall sealed wheel bearing assembly. (P-1)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Check service information for the specified replacement procedure for the vehicle
being serviced. _______________________________________________________
________________________________________________________________
_____ 2. Loosen (do not remove) the drive axle shaft nut.
_____ 3. Hoist the vehicle safely to a good working height (about chest high).
_____ 4. Remove the front wheel.
_____ 5. Use a steel drift between the caliper and the rotor cooling vent hole to hold the rotor
from rotating.
_____ 6. Remove the drive axle shaft hub nut.
_____ 7. Remove the front disc brake caliper.
_____ 8. Remove the rotor, the hub, and splash shield retaining bolts.
_____ 9. Mark the location of the hub and make certain the hub is loose on the steering knuckle.
_____ 10. Install the hub puller and remove the
bearing and hub assembly.
_____ 11. Clean and lubricate hub bearing surface.
_____ 12. Reinstall the hub and bearing using the
drive axle shaft nut. (Do not torque to the
final setting, just until the hub is seated.)
_____ 13. Reinstall the rotor, caliper, and wheel.
_____ 14. Lower the vehicle and tighten the drive axle shaft nut to the final specification.
Specification = _______________ (usually about 200 lb.-ft.)
11
Drum Brake Identification
Meets NATEF Task: (None Specified)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Check service information and determine the following information regarding the
drum brake design and features for the vehicle (check all that apply):
___
___
___
___
___
___
___
___
___
___
___
Dual servo
Leading trailing
Clip-on wheel cylinder
Bolted on wheel cylinder
Cast iron brake drum
Aluminum brake drum
Single U-spring design
Clip-type holddown
Coil-spring holddown
Cable-operated self adjust
Other (describe) _________
_____________________
_____________________
_____ 2. What is the brake drum diameter?
___________________________
_____ 3. What is the minimum allowable lining
thickness?
________________________________
_____ 4. What is the maximum allowable brake drum diameter?
_________________________________
12
Drum Brake Problem Diagnosis
Meets NATEF Task: (A5-C-1) Diagnose poor stopping, noise, vibration, pulling, grabbing,
dragging, or pedal pulsation concerns; determine necessary action. (P-1)
Name ____________________________________Date__________________________
Make/Model _____________________________ Year _________ Instructor’s OK
_____ 1. Verify drum brake problem concerns.
_____ Noise (describe) ____________________________________________
_____ Poor stopping
_____ Pulling (toward which side?) ________________________
_____ Grabbing (when?) ___________________________________________
_____ Dragging
_____ Brake pedal pulsation
_____ 2. Hoist the vehicle safely.
_____ 3. Wet the brake drum or install a vacuum
enclosure to provide protection against
possible asbestos dust.
_____ 4. Remove the brake drums.
_____ 5. Describe the condition of the drum brake parts:
_____ Brake drum _________________________________________________
_____ Lining _____________________________________________________
_____ Springs ____________________________________________________
_____ Self-adjuster ________________________________________________
_____ Backing plate _______________________________________________
_____ 6. Based on the diagnosis, what is the necessary action?
_________________________________________________________________
_________________________________________________________________