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Leaf Spring Suspension Course: Dismantling and Adjustment

Online course of 300 hours in leaf spring suspension: dismantling and adjustment. 6 modules covering EN 10089 (hot-rolled steel for hardened springs), SAE J2441 (shot peening for prestressing) and advanced Excel. Assigned tutor and open enrolment.

Duration300 h
ModeOnline
LanguageEnglish
Start datesSet by the faculty
AwardSEIUM Institute certificate
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Learning outcomes

What you will be able to do

01

Explain how leaf spring suspensions work.

02

Dismantle leaf springs safely by controlling the stored energy.

03

Diagnose fatigued, cracked or sagging leaves.

04

Rebuild the leaf pack with suitable leaves, clamps and bushes.

05

Fit and adjust ride heights and torque on the vehicle.

06

Apply anti-corrosion protection and lubrication between leaves.

07

Plan maintenance according to vehicle use.

Profile

Who it's for

  • Leaf spring suspension technician who wants to specialise in Leaf spring suspension: dismantling and adjustment.
  • Restorer of classic and industrial vehicles who wants to specialise in Leaf spring suspension: dismantling and adjustment.
  • Mechanic for historic heavy vehicles who wants to specialise in Leaf spring suspension: dismantling and adjustment.
  • Leaf spring manufacturer who wants to specialise in Leaf spring suspension: dismantling and adjustment.
  • Chassis technician who wants to specialise in Leaf spring suspension: dismantling and adjustment.
  • Maintenance manager for historic fleets who wants to specialise in Leaf spring suspension: dismantling and adjustment.
  • Graduates in engineering or science looking to enter leaf spring manufacturing.
Standards & tools

What you'll work with

  • EN 10089 (hot-rolled steel for hardened springs)
  • SAE J2441 (shot peening for prestressing)
  • ISO 6508-1 (Rockwell hardness test)
  • ISO 898-1 (mechanical properties of fasteners)
  • ISO 9227 (salt spray tests)
  • Directive 2014/45/EU (technical inspection of vehicles)
  • Vehicle Modification Manual (Ministry of Industry)
Syllabus

6 modules · 300 h

  1. 1.1Principle and behaviour of the leaf spring
  2. 1.2Semi-elliptic and quarter-elliptic leaf springs
  3. 1.3Leaves, eyes and spring hangers
  4. 1.4Shackles and their function
  5. 1.5Progressive and auxiliary leaf springs
  6. 1.6Advantages and limitations
  7. 1.7Applications in cars, lorries and off-road vehicles
  8. 1.8Documentation and dimensions
  9. 1.9Symptoms of a worn-out leaf spring
  10. 1.10Workshop: diagnosing a leaf spring suspension
  1. 2.1Risk of stored energy
  2. 2.2Vehicle supports and chocks
  3. 2.3Dismantling order
  4. 2.4Spring hangers and seized fasteners
  5. 2.5Eye bushes and bushings
  6. 2.6Shackles and pins
  7. 2.7Marking the position of the leaves
  8. 2.8Initial inspection
  9. 2.9Cleaning and descaling
  10. 2.10Practice: complete dismantling of a set
  1. 3.1Free arch and its measurement
  2. 3.2Loss of camber
  3. 3.3Cracks and breaks
  4. 3.4Wear between leaves
  5. 3.5Corrosion and its effect
  6. 3.6Replaced and mixed leaves
  7. 3.7Comparison between sides
  8. 3.8Hardness and material
  9. 3.9Criteria for repair or replacement
  10. 3.10Practice: measurement and diagnosis of a leaf pack
  1. 4.1Separating and cleaning the leaves
  2. 4.2Repair and reforming
  3. 4.3Recovering the arch
  4. 4.4Heat treatment of the leaves
  5. 4.5Anti-friction shims and their fitting
  6. 4.6Grease or plastic material separators
  7. 4.7Painting and protection
  8. 4.8Assembling the pack and spring hangers
  9. 4.9Torque and its sequence
  10. 4.10Practice: rebuilding a leaf pack
  1. 5.1New eye bushes and bushings
  2. 5.2Pins and greasing
  3. 5.3Installation and settling
  4. 5.4Resulting running height
  5. 5.5Balance between sides and axles
  6. 5.6Effect on the axle angle
  7. 5.7Correction with chocks
  8. 5.8Interaction with the dampers
  9. 5.9Checking clearances
  10. 5.10Practice: fitting and adjusting the height
  1. 6.1Noises and squeaks: causes
  2. 6.2Periodic greasing and its criteria
  3. 6.3Vehicle load and its effect
  4. 6.4Auxiliary leaf springs and reinforcements
  5. 6.5Conversion to another system: when not to
  6. 6.6Periodic inspection of leaves
  7. 6.7Common errors and breakages
  8. 6.8Workplace safety with leaf springs
  9. 6.9Documented real cases
  10. 6.10Final project: documented restoration of a leaf spring suspension
Methodology, software & labs

How you'll learn

100% online training on the SEIUM campus, with downloadable material, recorded classes and an assigned technical tutor. No fixed timetable: students progress at their own pace within the intake, which makes it possible to combine the course with work.

Each module combines theory, guided reading of the original standard and applied exercises. The working software is advanced Excel, Fusion 360, ANSYS Mechanical, in free, academic or evaluation versions. Tests are studied using real procedures for measuring leaf spring arch and stiffness, inspecting leaves for cracks, and fitting and adjusting heights on the vehicle. Assessment is continuous, by module, plus the final integrating project.

Accreditable laboratories(EN ISO/IEC 17025) with a rotor rig, EMC/Lightning pre-compliance, HIL/SIL, vibration/acoustics.
Evidence-oriented thesis:safety case, test plan, compliance dossier and operating limits.
Industry mentoring:lecturers with experience in training, , eVTOL/UAM and flight test.
Flexible format(hybrid/online), international cohorts and support from SEIUM Career Services.
Ethics and safety:a safety-by-design approach, with cyber-OT, DIH and compliance as its pillars.
Capstone project

Build it end to end

Your final project follows the real engineering workflow, step by step, reviewed by your tutor.

Noises and squeaks: causes

Explain how leaf spring suspensions work.

Periodic greasing and its criteria

Dismantle leaf springs safely by controlling the stored energy.

Vehicle load and its effect

Diagnose fatigued, cracked or sagging leaves.

Auxiliary leaf springs and reinforcements

Rebuild the leaf pack with suitable leaves, clamps and bushes.

Conversion to another system: when not to

Fit and adjust ride heights and torque on the vehicle.

Career opportunities

Where this takes you

Leaf spring suspension technicianRestorer of classic and industrial vehiclesMechanic for historic heavy vehiclesLeaf spring manufacturerChassis technicianMaintenance manager for historic fleets
Admissions & scholarships

Requirements

  • No prior qualification required.
  • Internet connection and a computer capable of running the programme's software.
  • Sufficient Spanish to follow technical standards documentation.

Ready to start?

Send your application today. Our admissions team replies within 72 hours with your study plan and funding options.

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FAQ

Frequently asked questions

The programme totals 300 hours, spread over 3 to 5 months. That is an average of 10 to 15 hours per week, compatible with a full-time job.

The course works with advanced Excel, Fusion 360, ANSYS Mechanical. Free, academic or evaluation versions are used, and the tutor indicates the free alternative where one exists.

A SEIUM diploma upon passing the continuous assessment and the integrating project. It is in-house training, not an official qualification from the Ministry.

Yes. Modules passed in a Course or Postgraduate Diploma in the same area are credited towards the higher-level programme. Please check the recognition policy when you enrol.

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