Engine brakes function by altering the normal operation of the _____________ stroke of a diesel engine.
Correct!
Wrong!
The clearance between the exhaust valve and/or valve bridge to the engine brake slave piston is the same for all engines and engine brake models.
Correct!
Wrong!
The auto lash screw adjustment, which is one of the adjustments required for an engine brake, is the clearance setting that would:
Correct!
Wrong!
The engine brake spool valve, located in the valve cover actuator, traps the oil between the:
Correct!
Wrong!
Engine brakes will function better and have more braking effect at low engine RPM''s:
Correct!
Wrong!
Engine brake operation may be affected by incorrect fuel injector adjustment on some engines.
Correct!
Wrong!
When the spool in the retarder control valve is moved to the OFF position a _________ sound should be heard
Correct!
Wrong!
During normal operations, certain controls are required to ensure engine on non-electronic engines are energized only when required and all conditions are met. These controls include: 1) an off/on dash switch, 2) a throttle idle validation switch, and 3) a ____________ switch.
Correct!
Wrong!
An operator complains of no engine brake action. This may be caused by:
Correct!
Wrong!
An operator complains that it seems like one cylinder on an engine equipped with an engine brake seem to stay on for a short time, with a POP, POP, POP, POP, after the operational switch is shut off. What would be the most likely cause?
Correct!
Wrong!
Exhaust brakes mounted on the exhaust system of equipment, provide retarding force or action by creating:
Correct!
Wrong!
Exhaust brakes require the use of a clutch switch to prevent the engine from stalling.
Correct!
Wrong!
Exhaust brakes never require any adjustment:
Correct!
Wrong!
The system is designed so that some oil always flows through the Brakesaver control valve into the braking chamber when the pump is engaged, even when the retarder is NOT being used.
Correct!
Wrong!
It is possible to have a piece of equipment equipped with an engine brake, an exhaust brake, and an engine retarder systems.
Correct!
Wrong!
Jakobs brakes, C-brakes, Pac-Brakes and Maxitard engine brake systems are completely different in their principal of operation.
Correct!
Wrong!
To replace the diaphragm in the control valve of an engine mounted retarder, it is necessary to drain the crankcase.
Correct!
Wrong!
The operator can manually module the position of the spool valve in the brakesaver''s valve body by varying the amount of:
Correct!
Wrong!
What braking system uses a sliding gate valve?
Correct!
Wrong!
Technician A says that the retarder device can be operated by an external oil supply, separate from the engine crankscase. Technician B says that the oil for the retarder device can be supplied by an oil pump attached to the engine oil crankcase and uses the same oil used to lube the engine. Who is correct?
Correct!
Wrong!
Technician A says that when clunk testing a retarder, the clunk that is heard is the spool valve being returned to its off position by the spool valve spring. Technician B says that engine RPM has NO affect on the retarding ability of the brakesaver. Who is correct?
Correct!
Wrong!
A Jake brake operates on the principle of opening the __________ __________ just before the cylinder is about to fire.
Correct!
Wrong!
The brakesaver or retarder brake works similar to:
Correct!
Wrong!
A retarder device is supplied, actuated and lubricated by oil from:
Correct!
Wrong!
The engine brake solenoid:
Correct!
Wrong!
HD2 Engine, Exhaust Brakes, Retarders
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