RRB ALP CBT 2 Millwright / Maintenance Mechanic Trade Syllabus 2026, Complete Topic Wise Syllabus & Exam Pattern

Candidates appearing for RRB Assistant Loco Pilot (ALP) CBT 2 Part B under Millwright or Maintenance Mechanic Trade should prepare according to the latest ITI Millwright syllabus. The examination covers industrial machinery, bearings, pumps, compressors, couplings, alignment, lubrication systems and maintenance engineering. Check the complete syllabus and exam pattern below.

RRB ALP CBT 2 Millwright Exam Pattern 2026

RRB ALP CBT 2 Millwright Trade Syllabus 2026

1. Workshop Safety

• Industrial Safety Guidelines, Hazard Identification & Accident Prevention
• Personal Protective Equipment (PPE) Selection & Standard Industry Uses
• Fire Safety (Classes of Fires & Selection of Correct Extinguishers)
• First Aid Practices & Emergency Medical Response Protocols
• Workshop General Safety Rules & 5S Housekeeping Concepts

2. Engineering Drawing

• Lines, Lettering, and Standard Assembly Drawing Symbols
• Orthographic Projection (First Angle & Third Angle Layouts)
• Machine Components Technical Drawings & Industrial Blueprints
• Dimensioning Systems, Isometric Projections & Sectional Views
• Limits, Tolerances, and Fits System Symbols (Hole & Shaft Basis)

3. Measuring Instruments

• Linear Measurements: Steel Rule, Try Square, Outside/Inside Calipers
• Precision Instruments: Vernier Caliper, Outside/Inside Micrometers
• Dial Test Indicators (DTI), Telescopic Gauges, and Depth Micrometers
• Feeler Gauge, Screw Pitch Gauges, Radius Gauges, and Bevel Protractors
• Least Count Calculations and Zero Error Corrections

4. Bearings and Lubrication

• Friction and Anti-Friction Bearings Classification
• Ball Bearings & Roller Bearings Types (Taper, Cylindrical, Needle Roller)
• Plain Bearings / Bush Bearings Materials & Applications
• Lubrication Methods (Gravity Feed, Force Feed, Splash Systems)
• Properties of Lubricants, Industrial Greases & Viscosity Index

5. Pumps and Compressors

• Centrifugal Pumps Construction, Working, and Priming Methods
• Reciprocating Pumps Working Mechanism & Cavitation Problems
• Air Compressors (Single Stage & Multi-Stage Reciprocating/Rotary Types)
• Intercoolers, Aftercoolers, and Air Receivers Maintenance
• Pump and Compressor Gland Packing, Seals, and Troubleshooting

6. Power Transmission Systems

• Flat and V-Belt Drives, Belt Tensioning, Creep, and Slip Phenomena
• Chain Drives Layout, Sprockets, and Chain Pitch Adjustments
• Gear Drives: Spur Gear, Helical Gear, Bevel Gear, Worm & Wheel Layouts
• Pulleys Types, Flywheels, and Shafts Layouts
• Keys (Sunk, Woodruff, Gib-head) and Keyways Milling Basics

7. Couplings and Shaft Alignment

• Rigid Couplings (Muff, Flange) and Flexible Couplings (Pin-Bush, Oldham, Gear)
• Shaft Alignment Principles: Radial and Axial Misalignment
• Alignment Methods using Dial Indicators and Straight Edges
• Machine Foundation Installation, Grouting, and Levelling using Spirit Levels

8. Hydraulic and Pneumatic Systems

• Principles of Hydrostatics and Hydrodynamics (Pascal's Law)
• Hydraulic Pumps, Directional Control Valves, Cylinders, and Accumulators
• Pneumatic Components: Air Compressors, FRL Unit (Filter, Regulator, Lubricator)
• Pneumatic Control Valves, Actuators, and Simple Circuit Troubleshooting

9. Industrial Machinery & Material Handling

• Conveyors Types (Belt Conveyors, Roller Conveyors, Bucket Elevators)
• Industrial Drive Systems, Reduction Gearboxes, and Overhauling
• Machine Components: Seals, O-Rings, Oil Seals, and Gaskets Maintenance
• Material Handling Equipment: Hoists, Cranes, Jacks, and Slings Safety

10. Welding and Fabrication

• Arc Welding & Gas Welding Equipment Layout and Safety
• Welding Defects, Causes, and Rectification Methods
• Brazing, Soldering, and Gas Cutting Operations
• Basic Structural Fabrication Layouts & Threaded Fasteners Joints

11. Maintenance Engineering & Practices

• Preventive Maintenance Planning and Checklist Schedules
• Predictive Maintenance Basics (Vibration Analysis, Thermography)
• Breakdown Maintenance and Rapid Repair Protocols
• Industrial Troubleshooting Techniques & Root Cause Analysis
• Machine Tools Geometrical Inspection & Levelling Tests

12. Engineering Materials

• Ferrous Metals (Pig Iron, Cast Iron, Plain Carbon Steels, Alloy Steels)
• Non-Ferrous Metals & Alloys (Copper, Aluminium, Brass, Bronze, Babbitt Metal)
• Physical and Mechanical Properties of Engineering Materials
• Heat Treatment Processes: Annealing, Normalizing, Hardening, Tempering, Case Hardening

Preparation Tips for Millwright Trade

• Master Pump & Bearings: Focus heavily on Centrifugal pump parts, air compressor cooling loops, and anti-friction bearing standard numbers.
• Understand Alignment: Read carefully about Dial Indicator shaft alignment calculations and foundation grouting materials.
• Revise Power Transmission: Memorize gear train velocity ratios, belt slip formulas, and hydraulic FRL unit sequences.
• Solve Technical PYQs: Practice previous year RRB ALP Millwright/Maintenance Mechanic trade question papers to match the structure of technical MCQs.

RRB ALP CBT 2 Millwright Trade FAQ

Q1. How many questions are asked in RRB ALP CBT 2 Millwright Trade?
A. A total of 75 objective-type multiple-choice questions (MCQs) are asked in Part B.

Q2. Is Part B qualifying in nature?
A. Yes, Part B (Trade Test) is strictly qualifying in nature. Its score will not affect the final merit list ranking, but passing it is mandatory.

Q3. What are the minimum qualifying marks for Millwright / Maintenance Mechanic Trade?
A. Candidates across all categories must secure at least 35% marks, which means scoring a minimum of 26.25 marks out of 75.

Q4. Is there negative marking in CBT 2 Millwright paper?
A. Yes, a negative marking rule of 1/3rd mark applies for every incorrect response.

Q5. What are the most important topics in Millwright Trade?
A. Anti-friction Bearings, Centrifugal Pumps & Compressors, Shaft Alignment Methods, Power Transmission (Gears & Belts), and Preventive Maintenance Engineering.