Millwright Mix 2 Flashcards
What is done prior to working on the main bearings Of a stationary diesel engine?
Ensure the engine cannot rotate
When mounting ball bearings with tapered bores up to 4”, when is the lock nut correctly set?
When there is a slight drag on the bearing
Which sequence is followed when repairing a prime mover?
Clean, matchmark, disassemble and check parts
What are the steps to install a new screw on a screw conveyor?
Position new screw and replace thrust bearing on end opposite of material flow
A conveyor has been repaired and is ready to be restarted, why would the conveyor not energize ?
Emergency pull cord is tripped
A conveyor belt has been replaced, in what condition is the conveyor belt for final tracking?
Under full load
How is tear in a heavy duty belt repaired?
Drill holes in belt and Install plate Fasteners
An enclosed impeller pump is producing an extensively high discharge head. What is done?
Trim the impeller
When pumping water under pressure, how is leakage in the packing controlled?
Tighten bolts evenly until packing has slight leakage
When installing a pneumatic conveyor, which type of fan is used to move fibrous materials?
Open face
Discharge volume from a pump is reduced from normal output and an inspection reveals that the outlet from the tank is partially plugged. What is done to resolve this?
Replace agitator
Which component is adjusted to correct misalignment on a conveyor system?
The tail pulley
A tank is not filling to the present volume. What is the problem?
Broken baffle
Steel plates are 1/2” x 14’ x 8’ what is the weight of 35 sheets? ( One ft³ of Steel weighs 490 lbs)
22867 lbs
What is the working load of the sling arrangement if each sling has a working load rating of 3000 pounds? Straight and at 45°
Straight- 6000lbs
45°- 1500 lbs
What is used to lift a 20’ turbine rotor weighting 100 tons?
Spreader bar
When connecting a motor to a pump what is done before coupling the pump to the motor?
Supply power and jog motor to ensure proper direction of rotation
An electric motor on a belt conveyor system is overheating and indicating high amperage draw what is the cause?
Overloaded system
Stationary diesel engine is overheating on a hot day, what is the cause?
Damaged radiator fins
During startup a plane bearing overheats upon inspection excessive damage is found on the bearing what is the cause?
The lubricant wedge has not been established
What Is done to reduce the formation of gum and sludge in an internal combustion engine ?
Use a higher detergent oil
What are the key considerations when storing lubricants for lifting equipment in a cabinet?
Cool, ventilated area and fireproof
In what state should a hydraulic Jack be prior to being stored?
Fully retracted, pressure released and de-energized
One section of the belt runs out of line at all points along the system. What is one possible cause?
Belt improperly spliced
