REHABILITATION OF INSTITUTE’S GROUP BUS

REHABILITATION OF INSTITUTE’S GROUP BUS

ABSTRACT

Before we (Mechanical Engineering Students majoring in Automobile Engineering) took delivery of Mercedes 508, EN 29 – A45 from the central workshop, the chief maintenance officer Mr. S.I. Enekwe pinpointed the following faults

1. Faulty steering
2. Leaking radiator
3. Lightening system (Trafficator lights)
4. Faulty brakes

We accepted the repair job as a challenge and in the course of repair we equally discovered some other minor faults which were not stated by the chief maintenance officer. We are happy to say that challenging was conquered by members of the groups through singleness of heart, hard work and faith. The department (Mechanical Engineering) is ever ready to put more of such ground vehicles back to the road if given an enabling environment to practice.

TABLE OF CONTENTS

Title Page                                                                                         ii

CHAPTER ONE

1.1     Fuel System                                                                                      1

1.2     The injectors                                                                            2

1.3     Injector fault diagnosis                                                            2

1.4     Filters                                                                                      3

CHAPTER TWO

2.1     The Braking System                                                              4

2.2     Mechanism of Braking System                                                         5

2.3     Arrangement of Brake Shoes                                                  5

2.4     Bleeding of Brake                                                                    7

2.5     Brake defects                                                                           8

2.6     Maintenance                                                                            9

CHAPTER THREE

3.1     Road Wheels and Tyres                                                                  10

3.2     Tubed tyres and constructions                                                          11

3.3     Tyre sizes and pressures                                                                   11

3.4     Tyre Removal and Fitting                                                       12

3.5     Causes of tyre wear                                                                 14

REHABILITATION OF INSTITUTE’S GROUP BUS