Maine Inspection License Class D
Latest Exam with Solved Solutions
2025.
Stroke adjustment - Answer Stroke shall be measured with engine off and reservoir pressure
of 90 to 100 p.s.i.. with the brakes fully applied.
Long-Stroke Clamp-Type Brake Chamber Data - Answer 16: Outside diameter 6 3/8, Rated
stroke 2.5, Max Stroke Adjustment 2 ID Tags.
20: Outside diameter 6 25/32, Rated stroke 2.5, Max Stroke Adjustment 2 ID Tags.
24: Outside diameter 7 7/32, Rated stroke 2.5, Max Stroke Adjustment 2 ID Tags.
24: Outside diameter 7 7/32, Rated stroke 3, Max Stroke Adjustment 2.5 ID Tags.
30: Outside diameter 8 3/32, Rated stroke 3, Max Stroke Adjustment 2.5 ID Tags.
Rotochamber Data - Answer 9: Outside diameter 4 9/32, Max Stroke Adjustment 1 1/2.
12: Outside diameter 4 13/16, Max Stroke Adjustment 1 1/2.
16: Outside diameter 5 13/32, Max Stroke Adjustment 2.
20: Outside diameter 5 5/16, Max Stroke Adjustment 2.
24: Outside diameter 6 13/32, Max Stroke Adjustment 2.
30: Outside diameter 7 1/16, Max Stroke Adjustment 2 1/4.
36: Outside diameter 7 5/8, Max Stroke Adjustment 2 3/4.
, Reject (Wedge Brakes) - Answer Reject if the wheel rotates with service brakes applied, if the
shoe travel exceeds 1/16 inch, and if the shoe fails to move on application of the service brakes.
Lining thickness (air drum brakes) - Answer Reject vehicle if the lining thickness is less than 1/4
inch at the shoe center.
Lining thickness (hydraulic and electric drum brakes) - Answer Reject vehicle if the lining
thickness is less than 1/16 inch at the shoe center.
Lining thickness (air disc brakes) - Answer Reject vehicle if the lining thickness is less than 1/8
inch or at wear indicators.
Reject vehicle if (rotors) - Answer If rotors are damaged, or two or more grooves are worn
beyond .090 inch (2.25mm).
True or false?
Reject vehicle if any spring-oriented brake on a vehicle or vehicle combination is not applied
upon actuation of the emergency/parking control, including a drive-line hand-controlled parking
brake. - Answer True
What system must the parking brake be held by? - Answer The system must be held in the
applied position by energy other than fluid pressure, air pressure, or electric energy.
Reject the vehicle is the parking brake is inoperative or not originally equipped for this reason.
Reject vehicle if (parking brake lining requirements) - Answer Reject vehicle if the lining (if
equipped) is less than 1/16 inch above the shoe on an external clamping type.
Cause to reject a master cylinder (hydraulic brakes) - Answer Reject vehicle if the master
cylinder is leaking, loose, or the fluid level is ½ inch below the full line or, if not marked, ½ inch
below the top.
Braked Pedal Travel (Hydraulic) - Answer Reject vehicle if the braked pedal travel from its free
height to its depressed height is more than 65% of the total distance, or, if when holding steady
pressure, the pedal travels to the floor or does not meet the manufacturer's specifications.
Latest Exam with Solved Solutions
2025.
Stroke adjustment - Answer Stroke shall be measured with engine off and reservoir pressure
of 90 to 100 p.s.i.. with the brakes fully applied.
Long-Stroke Clamp-Type Brake Chamber Data - Answer 16: Outside diameter 6 3/8, Rated
stroke 2.5, Max Stroke Adjustment 2 ID Tags.
20: Outside diameter 6 25/32, Rated stroke 2.5, Max Stroke Adjustment 2 ID Tags.
24: Outside diameter 7 7/32, Rated stroke 2.5, Max Stroke Adjustment 2 ID Tags.
24: Outside diameter 7 7/32, Rated stroke 3, Max Stroke Adjustment 2.5 ID Tags.
30: Outside diameter 8 3/32, Rated stroke 3, Max Stroke Adjustment 2.5 ID Tags.
Rotochamber Data - Answer 9: Outside diameter 4 9/32, Max Stroke Adjustment 1 1/2.
12: Outside diameter 4 13/16, Max Stroke Adjustment 1 1/2.
16: Outside diameter 5 13/32, Max Stroke Adjustment 2.
20: Outside diameter 5 5/16, Max Stroke Adjustment 2.
24: Outside diameter 6 13/32, Max Stroke Adjustment 2.
30: Outside diameter 7 1/16, Max Stroke Adjustment 2 1/4.
36: Outside diameter 7 5/8, Max Stroke Adjustment 2 3/4.
, Reject (Wedge Brakes) - Answer Reject if the wheel rotates with service brakes applied, if the
shoe travel exceeds 1/16 inch, and if the shoe fails to move on application of the service brakes.
Lining thickness (air drum brakes) - Answer Reject vehicle if the lining thickness is less than 1/4
inch at the shoe center.
Lining thickness (hydraulic and electric drum brakes) - Answer Reject vehicle if the lining
thickness is less than 1/16 inch at the shoe center.
Lining thickness (air disc brakes) - Answer Reject vehicle if the lining thickness is less than 1/8
inch or at wear indicators.
Reject vehicle if (rotors) - Answer If rotors are damaged, or two or more grooves are worn
beyond .090 inch (2.25mm).
True or false?
Reject vehicle if any spring-oriented brake on a vehicle or vehicle combination is not applied
upon actuation of the emergency/parking control, including a drive-line hand-controlled parking
brake. - Answer True
What system must the parking brake be held by? - Answer The system must be held in the
applied position by energy other than fluid pressure, air pressure, or electric energy.
Reject the vehicle is the parking brake is inoperative or not originally equipped for this reason.
Reject vehicle if (parking brake lining requirements) - Answer Reject vehicle if the lining (if
equipped) is less than 1/16 inch above the shoe on an external clamping type.
Cause to reject a master cylinder (hydraulic brakes) - Answer Reject vehicle if the master
cylinder is leaking, loose, or the fluid level is ½ inch below the full line or, if not marked, ½ inch
below the top.
Braked Pedal Travel (Hydraulic) - Answer Reject vehicle if the braked pedal travel from its free
height to its depressed height is more than 65% of the total distance, or, if when holding steady
pressure, the pedal travels to the floor or does not meet the manufacturer's specifications.
