Page 217 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

EXERCISE 13.3: Troubleshooting of Engine mechanical,
electrical problems and abnormal noises

Objectives

At the end of this exercise you shall be able to
• diagnose the engine mechanical problems and rectify it
• diagnose the engine electrical problems and rectify it
• diagnose the engine abnormal noises and rectify it.

Requirements

Tools/Instruments Equipments/machines
• Digital multimeter - 1 No. • Running condition of Diesel HMV - 1 No.
• Continuity meter - 1 No. Materials
• Ohm meter - 1 No.
• DE spanner 6 to 32 - 1 Set • Tray - as reqd.
• Electrical tester - 1 No. • Cotton cloth - as reqd.
• Executive auto electrical toolkit - 1 Set • Kerosene - as reqd.
• Pulley set universel for bearing • Diesel - as reqd.
& bushes - 1 No. • Soap Oil - as reqd.
• Engine Oil - as reqd.
• Coolant - as reqd.
• Engine bearings - as reqd.

Procedure

Diagnose the engine electrical problems in step by step as shown in the chart
(I) Engine does not start (electrical causes)

Check battery terminal for looseness/
corrosion

< <
Loose (Tighten terminals) OK
corroded (Clean terminals) Check starter switch

< <
Defective OK
(Replace switch) Check battery

< <
Discharged/weak OK
(Recharged) Check starter motor

< <
Defective (Overhaul)

200