LINES GP-FRONT 3371272 - Caterpillar

Illustration 1 g01461161
Ignition transformer and spark plug
(1) Ground spring
(2) Primary connection
(3) Secondary connection
(4) Insulator
(5) O-ring seal
(6) Spark plug Each transformer is grounded to the valve cover via ground spring (1). The ignition harness is connected to primary connection (2). The primary is driven with a pulse of approximately 100 V from the Electronic Control Module (ECM). The output from the secondary circuit of the transformer is sent to the spark plug through secondary connection (3). The secondary circuit of the transformer provides an initial 8,000 to 32,000 V to the spark plug. The spark that is created by the spark plug ignites the air/fuel mixture in the cylinder.