Red Seal Exam UPDATED ACTUAL Exam
Questions and CORRECT Answers
What does channel mean? - CORRECT ANSWER - It equals the number of modulators.
What is comfortable temperature and humidity? - CORRECT ANSWER - 21 to 25 Celsius. 40
to 45%
What would cause air to enter the cooling system header tank? - CORRECT ANSWER -A
water valve at the sleeper.
Why would some electronic have a fuse on the positive and negative side? - CORRECT
ANSWER - To protect the circuit if someone has the disconnects off.
If there are beach marks leading to the final fracture what kind of beach marks are they? -
CORRECT ANSWER - Fatigue.
What is the procedure for installing a accessory box? - CORRECT ANSWER - Long bolts to
align to push in, Timing marks on gear shaft, Under-size countershaft bearings for ease of
assembly, timing marks on transmission input gear, lock it into a gear so that you can push it in.
Brake pot service chamber leak will show up where? - CORRECT ANSWER - You would
leak right at the front at the diaphragm.
Brake pot spring side leak will show up where? - CORRECT ANSWER - At the exhaust valve
in the relay.
When you service hydraulic lining what precaution must be done? - CORRECT ANSWER -
Chalk wheels.
, When you service air suspension what precaution must be done? - CORRECT ANSWER -
Chalk wheels.
What causes cab misalignment? - CORRECT ANSWER - Transverse torque arm.
Landing gear nut is stripped is from? - CORRECT ANSWER - An overload.
Hood chaffing on cab? - CORRECT ANSWER - Raise hood mounts.
Before servicing a closed loop hydraulic system, after de-energizing all of the components what
is the next step? - CORRECT ANSWER - Relieve reservoir pressure.
Signal range on a three wire sensor is? - CORRECT ANSWER - 0.5 to 4.5 volts. And
reference voltage is 5 volts.
- CORRECT ANSWER - Change cab/no
One wheel won't lock up on primary drive? - CORRECT ANSWER - Broken axle on rear.
In a air system the purge valve won't operate? - CORRECT ANSWER - Change the governor.
In a hydraulic pump if oil bubbles in it? - CORRECT ANSWER - Cracked inlet or outlet.
What is the tool you would use for frame alignment? - CORRECT ANSWER - Plumb bob.
If all angles are good except toe out on turn what are the possible causes? - CORRECT
ANSWER - Lower steering arm wrong, broken or bent.
Questions and CORRECT Answers
What does channel mean? - CORRECT ANSWER - It equals the number of modulators.
What is comfortable temperature and humidity? - CORRECT ANSWER - 21 to 25 Celsius. 40
to 45%
What would cause air to enter the cooling system header tank? - CORRECT ANSWER -A
water valve at the sleeper.
Why would some electronic have a fuse on the positive and negative side? - CORRECT
ANSWER - To protect the circuit if someone has the disconnects off.
If there are beach marks leading to the final fracture what kind of beach marks are they? -
CORRECT ANSWER - Fatigue.
What is the procedure for installing a accessory box? - CORRECT ANSWER - Long bolts to
align to push in, Timing marks on gear shaft, Under-size countershaft bearings for ease of
assembly, timing marks on transmission input gear, lock it into a gear so that you can push it in.
Brake pot service chamber leak will show up where? - CORRECT ANSWER - You would
leak right at the front at the diaphragm.
Brake pot spring side leak will show up where? - CORRECT ANSWER - At the exhaust valve
in the relay.
When you service hydraulic lining what precaution must be done? - CORRECT ANSWER -
Chalk wheels.
, When you service air suspension what precaution must be done? - CORRECT ANSWER -
Chalk wheels.
What causes cab misalignment? - CORRECT ANSWER - Transverse torque arm.
Landing gear nut is stripped is from? - CORRECT ANSWER - An overload.
Hood chaffing on cab? - CORRECT ANSWER - Raise hood mounts.
Before servicing a closed loop hydraulic system, after de-energizing all of the components what
is the next step? - CORRECT ANSWER - Relieve reservoir pressure.
Signal range on a three wire sensor is? - CORRECT ANSWER - 0.5 to 4.5 volts. And
reference voltage is 5 volts.
- CORRECT ANSWER - Change cab/no
One wheel won't lock up on primary drive? - CORRECT ANSWER - Broken axle on rear.
In a air system the purge valve won't operate? - CORRECT ANSWER - Change the governor.
In a hydraulic pump if oil bubbles in it? - CORRECT ANSWER - Cracked inlet or outlet.
What is the tool you would use for frame alignment? - CORRECT ANSWER - Plumb bob.
If all angles are good except toe out on turn what are the possible causes? - CORRECT
ANSWER - Lower steering arm wrong, broken or bent.
