Session 2: Service and Replacement of Leaf Spring Set
Module: 4 Suspension System
Textual Question-Answers
Check Your Progress
Fill in the blanks
1. The leaf spring acts as a linkage for holding the …………… inposition and thus separate linkages are not necessary.
Ans: axle.
2. The process of hammering the leaf throughout its length to achievea desired angle is known as ……………..
Ans: cambering.
3. The spring shackle allows for movement of the suspension bypulling in or pushing out as the suspension travels through its up anddown ………………..
Ans: movement.
4. The shackle takes up the tendency of the leaf spring to elongate when compressed, making the suspension’s springiness ………………
Ans: effective.
Multiple Choice Questions
1. What is the purpose of a leaf spring in wheeled vehicles?
a) To provide steering control
b) To hold the chassis together
c) To absorb engine vibrations
d) To support the suspension
Ans: d) To support the suspension
2. In leaf springs, what is the primary function of interleaf friction?a) Enhancing steering responsiveness
b) Providing damping action
c) Reducing tyre wear
d) Increasing ground clearance
Ans: b) Providing damping actionq
3. What is the purpose of a shackle in a leaf spring suspension?a) To provide additional ground clearance
b) To connect the axle to the chassis
c) To improve engine performance
d) To enhance braking efficiency
Ans: b) To connect the axle to the chassis
4. The device that allows a leaf spring to flex and move while keepingthe tyre on the road is called:
a) Axle pin
b) Leaf holder
c) Spring lock
d) Spring shackle
Ans: d) Spring shackle
Answer the following questions
1. Why leaf springs are provided in vehicle? State the functions ofleaf springs.
Ans: Leaf springs are provided to support the vehicle load, absorb roadshocks, maintain axle position, and ensure smooth riding comfort.
2. State the role of leaf spring in a vehicle.
Ans: The leaf spring supports vehicle weight, absorbs shocks from roadirregularities, and maintains proper alignment of the axle with the chassis.
3. Describe the functions of shackle.
Ans: The shackle allows length variation of the leaf spring during compression and expansion and ensures smooth suspension movement.
4. Describe the functions of centre bolt.
Ans: The centre bolt holds the leaf spring assembly together and locatesthe axle correctly on the spring.
5. What tools and equipment are required for servicing of leaf springsystem?
Ans: Spanners, hammers, jack and jack stands, C-clamps, pry bar, measuring scale, and safety equipment.
Activity
1. Make a list of steps to carry out the servicing, maintenance andrepair of leaf spring.
Ans:
S. No. Step
1. Raise the vehicle safely and remove the wheels
2. Inspect leaf spring for cracks, wear, and sagging
3. Remove and service or replace damaged leaves and shackles
4. Reassemble, tighten bolts, and lower the vehicle
2. Make a poster showing cambering of leaf spring.
Ans: The poster should clearly show the leaf spring curvature, camberangle, hammering process, and final cambered shape with proper labels.
Try yourself.
