Muhammad Masud Rana

19/04/2026

19/04/2026

Structure Installation of Cooling Tower.

22/11/2025

The starter motor is a critical component that initiates your car’s engine. Understanding its parts helps in troubleshooting and maintenance.

1️⃣ Armature

Rotating part of the starter motor.

Converts electrical energy into mechanical motion to turn the engine.

2️⃣ Field Coils / Magnets

Create a magnetic field that interacts with the armature.

Can be permanent magnets or wound coils in modern starters.

3️⃣ Starter Drive / Bendix Gear

Connects the starter to the engine’s flywheel.

Engages when the starter motor runs and disengages once the engine starts.

4️⃣ Solenoid

Electromagnetic switch that pushes the Bendix gear and completes the electrical circuit.

Responsible for the “click” sound when starting the car.

5️⃣ Brushes and Commutator

Brushes transfer current to the rotating armature through the commutator.

Wear over time and require replacement for smooth operation.

🛠️ Maintenance Tips

Check connections and terminals for corrosion.

Inspect brushes for wear and replace if necessary.

Listen for unusual noises indicating Bendix or solenoid issues.

🚗 Healthy starter motor = reliable engine start and stress-free driving.

23/10/2025

Idle Air Control (IAC) Valve

The Idle Air Control (IAC) valve manages the engine’s idle speed by controlling the amount of air that bypasses the throttle plate. Inside the valve is a small conical piston that moves in and out based on signals from the ECU (Engine Control Unit).

When the engine is idling, air flows through a side passage where the IAC valve is mounted. The valve fine-tunes this airflow—opening or closing slightly—to keep the idle speed steady, usually between 800 and 900 rpm.

If the valve becomes dirty or blocked with carbon buildup, the piston may stick or fail to seal correctly, letting too much air through. This often leads to unstable idling, high revs, or stalling—particularly when the engine is cold or when you lift your foot off the accelerator.

22/10/2025

কোন জেলে রাখা হবে গুমের মামলায় অভিযুক্ত সেনা কর্মকর্তাদের? | Army | Tribunal | Channel 24Welcome to the Official YouTube Channel ...

27/02/2025

📌📌 Main Parts of Cylinder Head📌📌

In a piston engine, the cylinder head sits above the cylinders, forming the roof of the combustion chamber. In side valve engines the head is a simple plate of metal containing the spark plugs and possibly heat dissipation fins.

In more modern overhead valve and overhead camshaft engines, the head is a more complicated metal block containing the inlet and exhaust passages, and often coolant passages, Valvetrain components, and fuel injectors.

1. Valve Spring:

An engine valve spring is a coil spring that keeps the valves in an internal combustion engine in the correct position and opens and closes them properly.

2. Camshaft:

A camshaft is a shaft containing a row of pointed cams to convert rotational motion to reciprocating motion.

3. Rocker Arm:

A rocker's arm is a lever in an internal combustion engine that transfers motion from the camshaft to open the intake or exhaust valves.

4. Rocker Shaft:

A rocker shaft in an engine is a component that transmits the camshaft's movement to the engine's intake and exhaust valves.

5. Valve Clearance Adjuster:

A valve clearance adjuster, also known as a hydraulic lash adjuster, is a component of a valve mechanism that automatically adjusts the gap between the valve and the rocker arm.

6. Valve Retainer:

A valve retainer is a small, cylindrical part in an engine's valvetrain system that holds the valve spring and valve spring keeper in place.

7. Stud Hole:

A stud hole in an engine head is a threaded hole that a cylinder head stud screws into. Studs are often used in heavy-duty or performance applications instead of main cap bolts.

8. Thermostat Housing:

The thermostat housing is a vital part of a car's engine that houses the thermostat and regulates the coolant intake.

9. Engine Valve:

An engine valve is a moving part in the cylinder head of an engine that controls the flow of air and fuel into the combustion chamber and exhausts gases.

23/12/2024

23/12/2024

Common Gearbox Problems

Gear Slipping
Symptoms: The vehicle unexpectedly slips out of gear or won’t stay in gear.
Causes: Worn or damaged gear teeth, faulty synchronizers, or a defective clutch.
Result: Loss of power or control, especially when shifting gears.

Difficulty Shifting Gears
Symptoms: Hard to shift between gears, or a grinding noise when changing gears.
Causes: Worn clutch parts, low transmission fluid, damaged synchronizers, or a misaligned clutch.
Result: Rough or jerky gear changes, making driving more difficult.

Grinding Noise
Symptoms: A grinding sound, particularly during gear shifts.
Causes: Worn synchronizers, a misaligned clutch, or an improperly adjusted clutch pedal.
Result: Damage to gears over time and difficulty achieving smooth shifts.

Clutch Problems
Symptoms: The clutch pedal feels soft, spongy, or stiff, and it may not fully engage or disengage.
Causes: Worn clutch plate, faulty clutch release bearing, or hydraulic issues like low fluid or leaking master/slave cylinders.
Result: Trouble engaging or disengaging gears, causing jerky movements or even stalling.

Transmission Fluid Leaks
Symptoms: Fluid puddles under the car or low transmission fluid levels.
Causes: Damaged seals, worn gaskets, or loose bolts in the gearbox housing.
Result: Low fluid levels leading to increased wear on gears and difficulty shifting.

Worn Synchronizers
Symptoms: Grinding or crunching noises when shifting, with difficulty engaging higher gears.
Causes: Natural wear and tear from the friction between gears during shifting.
Result: Harder shifting and potential gearbox damage if left unaddressed.

Clutch Drag
Causes: Misadjusted clutch pedal, a warped clutch plate, or hydraulic problems.
Result: Difficulty shifting gears and possible gearbox damage if gears are forced.

Noisy Transmission in Neutral
Symptoms: Whining or rattling noise when the car is in neutral.
Causes: Worn bearings, worn input shaft, or loose internal components.

By team

16/10/2024

Types of Valves

16/10/2024

TYPES OF CLUTCHES 👍
get to know more about the clutches,how it works and performs its operation,hope you will enjoy to the end.
1. Friction Clutches
These are the most common type of clutches used in motor vehicles. The high friction between the clutch plate and the flywheel allows this particular type of clutch to engage without slippage.
2. Centrifugal Clutches
Used mainly in small motor applications like mopeds, mini bikes, some chainsaws and go-karts, centrifugal clutches employ the basics of centrifugal force for their operation.
3. Hydraulic Clutches
Unlike mechanical clutches that utilize physical linkages like cables or direct mechanical 'push' to operate, hydraulic clutches rely on hydraulics to operate.
4. Semi-Centrifugal Clutches
These are a type of friction clutch intended for high torque power transmission. It has some elements of centrifugal clutch for self-engagement and friction clutch for power transmission.
5. Cone Clutches

26/07/2024

একটু ফ্রি সময় নিয়ে বাহিরে মনোরঞ্জন দৃশ্য অবলোকন!!!!!!!