Session 1: Lubrication of Gearbox
Unit 7: Regular Maintenance of Gearbox
Textual Question-Answers
Check Your Progress
A. Fill in the blanks
1. Lubricating oil is used for…………….
Ans: reducing friction
2. Lubrication removes ………….. from engine.
Ans: heat
3. Replace the ………… at the manufacturer recommended interval.
Ans: lubricating oil
B. Multiple choice questions
1. In motorcycles, lubricating oil should be changed after…………….
(a) 2,000-3,500 km
(b) 4000-5000 km
(c) 7000-8000 km
(d) None of the above
Ans: (a) 2,000-3,500 km
2. In cars, the lubricating oil should be changed after………………(a) 10,000-15,000 km
(b) 25000-27000 km
(c) 3000-5000 km
(d) None of the above
Ans: (a) 10,000-15,000 km
3. Steps for changing lubrication of gearbox include……………..
(a) checking for leakage of oil from the gearbox
(b) checking the level of lubricating oil in the gearbox by loosening the oil
level
(c) bolt when the gearbox is filled with correct quantity of oil
(d) All of the above
Ans: (d) All of the above
4. Basic steps for changing the lubricating oil include…………….
(a) placing the container below the drain plug of gearbox
(b) opening the filler and drain plug and leaving it for appropriate time(c) replacing the washer of drain plug and tightening it to the specifiedtorque
(d) All of the above
Ans: (d) All of the above
C. Answer the following questions
1. What is a gearbox?
Ans: A gearbox is a mechanical unit that transmits engine power to thewheels by changing speed and torque through different gear ratios.
2. Differentiate between oil and coolant.
Ans: Oil is used to lubricate moving parts and reduce friction, whereascoolant is used to absorb and remove excess heat from the engine to prevent overheating.
3. Name the tools used for changing coolant in a vehicle.
Ans: The tools used include spanners, drain pan or container, funnel, screwdrivers, and hose pliers.
