Page 191 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

MODULE 11: Ignition System

EXERCISE 11.1: Overhauling magneto assembly

Objectives

At the end of this exercise you shall be able to
• remove the flywheel of the magneto assembly
• dismantle the magneto assembly
• check the CB points, condenser cam and adjust CB points gap
• check the magneto coils
• assemble the magneto assembly.
• set ignition timing
Requirements

Tools/Instruments

• Digital multimeter - 1 No. • Spark plug gauge - 1 No.
• Continuity meter - 1 No. • Spark plug spanner - 1 No.
• Ohm meter - 1 No. Materials
• DE spanner 6 to 32 - 1 Set
• Electrical tester - 1 No. • Tray - as reqd.
• Executive auto electrical toolkit - 1 Set • Cotton cloth - as reqd.
• Pulley set universal for bearing • Kerosene - as reqd.
& bushes - 1 No. • Petrol - as reqd.
• Flywheel holding tool - 1 No. • Engine Oil - as reqd.
• Coolant - as reqd.
Equipments/Machines • Insulation tape - as reqd.
• Single cylinder four stroke petrol • Test lamp - 1 No.
engine - 1 No. • Spore magnetic coils - 1 Set
• Ignition timing light - 1 No. • Spore CB point assembly - 1 Set
• Spare condenser - 1 No.

Procedure

Dismantling

• Remove the magneto cover by unscrewing the screws.
• Remove the dust cap by removing the circlip with the help of a screwdriver.
• Lock the magneto flywheel by means of the holding down tool (1). (Fig 1)

Fig 1

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