AUMT 1410SEC2 Exam Questions Part 3 Questions with Correct Answers
Question 1:
The construction of a quick take-up master cylinder is being discussed: Technician A says that
the primary piston fits in two bore sizes.
Technician B says that both ends of the secondary piston are the same size.
Answer:
Both A and B
Question 2:
The brake pads on a disc brake system are worn, and more fluid is required in front of the
master cylinder piston:
Technician A says that this is the purpose of the vent port. Technician B says that this is the
purpose of the replenishing port.
Answer:
B only
Question 3:
Technician A says that DOT 3 brake fluid has a higher boiling point than DOT 5. Technician B
says that DOT 4 brake fluid has a lower boiling point than DOT 5.1.
Answer:
B only
Question 4:
Technician A says that the quick take-up valve in a quick take-up master cylinder allows flow
from the reservoir to the primary piston spool area. Technician B says that the quick take-up
valve allows flow from the primary piston spool area to the reservoir.
Answer:
Both A and B
Question 5:
Technician A says that the master cylinder primary cup seals pressure on brake application.
Technician B says that the master cylinder primary cup allows fluid flow during brake release.
Both A and B Technician A says that silicone-based brake fluids are best suited for ABS use.
Technician B says that silicone-based brake fluids should never be mixed with other fluid in a
, brake system.
Answer:
B only
Question 6:
The operation of a dual-piston master cylinder with a primary system leak is being discussed:
Technician A says that the secondary piston is moved mechanically by the primary piston.
Technician B says that the secondary piston is moved by hydraulic pressure from the primary
piston. Who is correct?
Answer:
A only
Question 7:
While discussing central valve master cylinders; Technician A says spring loaded check-valves
are installed in the piston heads to prevent seal damage during ABS operation. Technician B
says the central check valves provide supplementary passages to let fluid flow back and forth
between valley and pressure chambers during ABS stops. Who is correct?
Answer:
Both A and B
Question 8:
Technician A says that the primary piston is moved by the pedal pushrod in a dual-piston
master cylinder. Technician B says that during normal braking, the secondary piston is moved
by hydraulic pressure from the primary piston. Who is correct?
Answer:
Both A and B
Question 9:
The operation of a dual-piston master cylinder with a secondary system leak is being discussed:
Technician A says that the secondary piston is moved mechanically by the primary piston.
Technician B says that the secondary piston is moved by hydraulic pressure from the primary
piston. Who is correct?
Answer:
B only
Question 1:
The construction of a quick take-up master cylinder is being discussed: Technician A says that
the primary piston fits in two bore sizes.
Technician B says that both ends of the secondary piston are the same size.
Answer:
Both A and B
Question 2:
The brake pads on a disc brake system are worn, and more fluid is required in front of the
master cylinder piston:
Technician A says that this is the purpose of the vent port. Technician B says that this is the
purpose of the replenishing port.
Answer:
B only
Question 3:
Technician A says that DOT 3 brake fluid has a higher boiling point than DOT 5. Technician B
says that DOT 4 brake fluid has a lower boiling point than DOT 5.1.
Answer:
B only
Question 4:
Technician A says that the quick take-up valve in a quick take-up master cylinder allows flow
from the reservoir to the primary piston spool area. Technician B says that the quick take-up
valve allows flow from the primary piston spool area to the reservoir.
Answer:
Both A and B
Question 5:
Technician A says that the master cylinder primary cup seals pressure on brake application.
Technician B says that the master cylinder primary cup allows fluid flow during brake release.
Both A and B Technician A says that silicone-based brake fluids are best suited for ABS use.
Technician B says that silicone-based brake fluids should never be mixed with other fluid in a
, brake system.
Answer:
B only
Question 6:
The operation of a dual-piston master cylinder with a primary system leak is being discussed:
Technician A says that the secondary piston is moved mechanically by the primary piston.
Technician B says that the secondary piston is moved by hydraulic pressure from the primary
piston. Who is correct?
Answer:
A only
Question 7:
While discussing central valve master cylinders; Technician A says spring loaded check-valves
are installed in the piston heads to prevent seal damage during ABS operation. Technician B
says the central check valves provide supplementary passages to let fluid flow back and forth
between valley and pressure chambers during ABS stops. Who is correct?
Answer:
Both A and B
Question 8:
Technician A says that the primary piston is moved by the pedal pushrod in a dual-piston
master cylinder. Technician B says that during normal braking, the secondary piston is moved
by hydraulic pressure from the primary piston. Who is correct?
Answer:
Both A and B
Question 9:
The operation of a dual-piston master cylinder with a secondary system leak is being discussed:
Technician A says that the secondary piston is moved mechanically by the primary piston.
Technician B says that the secondary piston is moved by hydraulic pressure from the primary
piston. Who is correct?
Answer:
B only
