Session 1: Overhauling of clutch
Module 3: Transmission System
Textual Question-Answers
Check Your Progress
Fill in the blanks
1. Diaphragm clutch is advantageous over spring clutch as ittransmits more torque due to the use of a diaphragm ……………
Ans: spring.
2. During the process of overhauling a clutch assembly, it isimportant to inspect the clutch plate for ……………. and check itsthickness.
Ans: wear.
3. Clutch slip occurs when power transmission is not properly……………. to the gearbox even after releasing the clutch plate.
Ans: transmitted.
4. A weakened diaphragm spring can be one of the causes of………………
Ans: clutch slip.
Multiple Choice Questions
1: What type of clutch uses a diaphragm spring instead of a coil spring?
a) Spring clutch
b) Multi-plate clutch
c) Centrifugal clutch
d) Diaphragm clutch
Ans: d) Diaphragm clutch
2: Why is a diaphragm clutch advantageous over a spring clutch?a) It has larger size
b) It requires more maintenance
c) It transmits more torque
d) It is less affected by centrifugal force
Ans: c) It transmits more torque
3: What is the primary purpose of overhauling a clutch assembly?a) To increase rotational speed
b) To replace the engine
c) To improve fuel efficiency
d) To restore proper functioning and efficiency
Ans: d) To restore proper functioning and efficiency
4: Clutch slip occurs when:
a) The clutch pedal is released slowly
b) Power transmission is not transmitted to the gearbox after releasing theclutch plate
c) The engine stalls
d) The clutch pedal is pushed all the way to the floor
Ans: b) Power transmission is not transmitted to the gearbox after releasingthe clutch plate
Answer the following questions
1. What is the importance of reconditioning and overhauling theclutch of a vehicle?
Ans: Reconditioning and overhauling the clutch restores proper power transmission, improves vehicle performance, increases clutch life, and prevents breakdowns.
2. What are the functions of clutch in vehicle?
Ans: The clutch connects and disconnects engine power to the gearbox, allows smooth starting, enables gear shifting, and prevents engine stalling.
3. When is the clutch plate changed in a vehicle?
Ans: The clutch plate is changed when it becomes excessively worn, slipsduring operation, causes judder, or fails to transmit power properly.
4. Enlist the components of clutch system?
Ans: Flywheel, clutch plate, pressure plate, diaphragm spring, releasebearing, clutch fork, and clutch pedal.
5. What components are linked to the gear input shaft?
Ans: The clutch plate hub is linked to the gear input shaft.
6. Why the clutch springs are used in clutch plate?
Ans: Clutch springs absorb shocks, reduce vibrations, and ensure smoothengagement of the clutch.
Activity
1. Make a list of steps for removing clutch assembly from the engineAns:
S. No. Steps
1. Disconnect the battery and remove the gearbox
2. Support the engine and transmission properly
3. Remove clutch pressure plate bolts
4. Remove clutch plate and pressure plate assembly
5. Prepare a list of the causes and remedies of clutch judder
Ans:
S. No. Causes Remedies
1. Oil or grease on clutch plate Clean or replace clutch plate
2. Warped flywheel Resurface or replace flywheel
3. Uneven clutch plate wear Replace clutch plate
4. Loose engine or gearbox mount Tighten or replace mounts
