Maine State inspection Class D Test
Questions with Complete Solved
Solutions.
does the gear indicator have to work and work correctly? - Answer yes, reject vehicle is the
gear selection indicator that does not properly identify the current gear position.
Does there have to be a clevis pin on a slack adjuster? - Answer "no bolts allowed in slack
adjuster in place of clevis pin"
on any axle does the air chambers and slack adjuster lengths need to be the same - Answer
yes, reject and vehicle if there is a mismatch across any axle of air chambers size or slack
adjuster length
Wedge brakes - Answer reject vehicle if the shoe travel exceeds 1/16 inch
On a non-steering axle, what are the measurements for rejection? - Answer Reject vehicle in a
NON-STEERING axle, the lining thickness is less than 1/4 inch at the center for air drum brakes;
1/16 or less at the shoe center for hydraulic and electric brakes; and less than 1/8 inch for air
disc brakes or at wear lines.
On a steering axle, what are the measurements for rejection? - Answer reject vehicle if, on a
STEERING axle, the lining thickness is less than 1/4 inch at the shoe center for drum brakes; less
than 1/8 inch for air disc brakes; and 1/16 inch or less for hydraulic disc or electric brakes or at
wear indicators.
rotors worn rejection measurement? - Answer reject vehicle if the rotor is damaged, or two or
more grooves are worn beyond 0.090 inch (2.25mm)
Wheel seal leakage - Answer reject vehicle if any wheel seal is leaking, slight seepage is not
cause for rejection
Hydraulic brake fluid level - Answer Master cylinder must be 1/2 inch below the full line or if
not marked 1/2 inch from the top
Questions with Complete Solved
Solutions.
does the gear indicator have to work and work correctly? - Answer yes, reject vehicle is the
gear selection indicator that does not properly identify the current gear position.
Does there have to be a clevis pin on a slack adjuster? - Answer "no bolts allowed in slack
adjuster in place of clevis pin"
on any axle does the air chambers and slack adjuster lengths need to be the same - Answer
yes, reject and vehicle if there is a mismatch across any axle of air chambers size or slack
adjuster length
Wedge brakes - Answer reject vehicle if the shoe travel exceeds 1/16 inch
On a non-steering axle, what are the measurements for rejection? - Answer Reject vehicle in a
NON-STEERING axle, the lining thickness is less than 1/4 inch at the center for air drum brakes;
1/16 or less at the shoe center for hydraulic and electric brakes; and less than 1/8 inch for air
disc brakes or at wear lines.
On a steering axle, what are the measurements for rejection? - Answer reject vehicle if, on a
STEERING axle, the lining thickness is less than 1/4 inch at the shoe center for drum brakes; less
than 1/8 inch for air disc brakes; and 1/16 inch or less for hydraulic disc or electric brakes or at
wear indicators.
rotors worn rejection measurement? - Answer reject vehicle if the rotor is damaged, or two or
more grooves are worn beyond 0.090 inch (2.25mm)
Wheel seal leakage - Answer reject vehicle if any wheel seal is leaking, slight seepage is not
cause for rejection
Hydraulic brake fluid level - Answer Master cylinder must be 1/2 inch below the full line or if
not marked 1/2 inch from the top
