Diesel Locomotive Maintenance Quiz

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Questions and Answers

What is the minimum engine sump vacuum required on the load box at 8th notch?

0.5" of water

1.5" of water

1.0" of water

0.9" of water (correct)

What should be done if water contamination in lube oil exceeds 0.25%?

Change the lube oil filter only

Perform a spectrographic analysis

Conduct a visual check of the filter

Replace the lube oil immediately (correct)

Which of the following procedures helps reduce lube oil consumption in locomotives?

Replacing defective drain cocks during every trip

Visual inspection of lube oil cooler only

Ensuring proper clearing of the OST drain pipe (correct)

Regularly checking for cracks in turbo lube oil filter housing

During which schedule should the lube oil cooler be hydraulically tested?

Yearly Signup and view all the answers

What is the recommended position for piston rings when installed?

At 180° to each other Signup and view all the answers

What determines the amount of fuel injected into the cylinders of a diesel engine?

The fuel pump Signup and view all the answers

Which component is responsible for cooling in a diesel engine's water-cooling system?

Radiator Signup and view all the answers

What is the primary purpose of baffle plates in a diesel locomotive's fuel tank?

To prevent fuel surging Signup and view all the answers

How is the air pressure for the locomotive brakes supplied?

By a compressor Signup and view all the answers

What type of trucks do locomotives larger than 40 tons typically use?

Six-wheel swing bolster trucks Signup and view all the answers

What role does lubricating oil play in the functioning of a diesel engine?

It keeps contaminating materials in suspension Signup and view all the answers

Which component of the locomotive is adjusted to regulate the heat escaping from the radiator?

Louvers Signup and view all the answers

What is the primary function of the fuel pump control shaft?

To adjust fuel pump rack settings Signup and view all the answers

How can individual fuel pumps be managed without affecting others?

By using manual cut-out levers on the fuel pump control shaft Signup and view all the answers

What type of pump is the lubricating oil circulating pump?

Positive displacement gear pump Signup and view all the answers

What mechanism prevents excessive pressure in the lubricating oil circulating pump?

Pressure relief valve Signup and view all the answers

What would be the likely consequence of scales formation on the after-cooler tubes?

Reduced heat transfer capacity Signup and view all the answers

Where is the cooling water circulating pump located?

On the free end of the engine Signup and view all the answers

What does the presence of black exhaust smoke typically indicate in a diesel engine?

Poor air flow due to after-cooler issues Signup and view all the answers

What happens to the pistons in a four-stroke cycle engine?

Two revolutions result in one power stroke Signup and view all the answers

What feature reduces the maintenance problems associated with the water pump?

Mechanical seal installation Signup and view all the answers

What is the role of the crossover linkage in V-type engines?

To synchronize pump control shafts Signup and view all the answers

What is the primary function of the crankshaft in an engine?

To transform reciprocating motion to rotary motion Signup and view all the answers

Which material is primarily used for manufacturing ALCO locomotive crank shafts?

Forged steel alloy Signup and view all the answers

How are the crankshaft's main bearings supported?

By bearing caps mounted to the saddles Signup and view all the answers

What is the relationship between the crankpins and the crankshaft webs?

Crankpins are connected by crankshaft webs for balance Signup and view all the answers

What is the role of the oil slingers and catchers on the crankshaft?

To prevent oil leakage Signup and view all the answers

What type of crankshaft construction is employed for the 12 and 16 cylinder 'V' type engines?

One piece forged steel alloy Signup and view all the answers

How does cooling water flow within the cylinder block?

Circulated by the water pump through the oil cooler Signup and view all the answers

What drives the engine's cooling water and lubricating oil pumps?

The crankshaft's free end Signup and view all the answers

What is the purpose of the counterbalances on the crankshaft?

To provide balance across the shaft Signup and view all the answers

What is the primary purpose of crank case explosion doors?

To prevent damage from positive pressure in the crankcase Signup and view all the answers

Under what condition do the crank case explosion doors open?

When the positive pressure inside exceeds a preset value Signup and view all the answers

What is a significant advantage of the Moatti lube oil filter over traditional paper filters?

It allows for longer oil renewal periods Signup and view all the answers

What is the role of the centrifuge oil separator in the lube oil system?

To filter carbon particles from the lube oil Signup and view all the answers

Which of the following can lead to external leakage in the lube oil system?

Aging of tappet cover gaskets Signup and view all the answers

What effect can a worn-out extension shaft oil seal have on the engine?

It can lead to positive pressure buildup in the crankcase Signup and view all the answers

Which component is NOT mentioned as a point of external leakage in the lube oil system?

Oil pressure regulator Signup and view all the answers

What happens when the crank case explosion doors open?

The engine must be shut down immediately Signup and view all the answers

What can be a consequence of using the wrong material for the crank case cover?

Potential external leakage of lube oil Signup and view all the answers

What characteristic of the centrifuge oil separator helps in the filtration process?

It relies on centrifugal action to deposit particles Signup and view all the answers

Study Notes

North Western Railway Supervisor's Training Centre, Ajmer Course Text Book

Course focused on MSE/MJR (Diesel) - Session III
Course text book compiled by Railway Board's prescribed module
Covers full technical topics regarding Diesel Traction
Intended for Supervisors maintaining Diesel Locomotives in workshops and sheds.
Aims to improve safety awareness and work-area knowledge for newly recruited personnel (JEs & SSEs).

Foreword (Page 2)

Sudhir Gupta, Principal Chief Mechanical Engineer, North Western Railway Jaipur expressed happiness about the book.
The book is meant to enhance the knowledge and understanding of safety and work procedures for new JEs & SSES
The book covers the Railway Board's prescribed requirements perfectly.

Foreword (Page 3)

S.K. Gupta, Chief Workshop Engineer, North Western Railway Jaipur, expressed gratitude to the team who worked to compile the book.
The book provides up-to-date technical information for newly recruited JEs & SSES in the Railway's Mechanical Department.
Highlights the importance of safety in the Mechanical department.

Foreword (Page 4)

N.S. Patiyal, Director, STC Ajmer, acknowledges the role of the Mechanical Department in Railway safety.
The book emphasizes the importance of applying theory to practical locomotive maintenance.
The book facilitates practical training and encourages self-reliance in the work-related fields of the trainees.

Index (Page 5)

Provides a comprehensive list of topics covered in the text book along with page numbers.
Covers various technical aspects like Diesel Locomotive Introduction, Transmission System, Constructional Details, and more.

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Description

Test your knowledge on the maintenance and operational procedures of diesel locomotives. This quiz covers topics such as engine lubrication, fuel systems, and cooling mechanisms. Perfect for students and professionals in the field of diesel mechanics.