G3520B Engine Caterpillar

View of the right side of a typical G3520B Engine

(1) Turbocharger

(2) Exhaust outlet

(3) Electronic fuel control

(4) Fuel inlet

(5) Throttle

(6) Air inlet

(7) Air cleaner

(8) Lifting eye

(9) Jacket water outlet

(10) Oil filter

(11) Valve for oil sampling

(12) Alternator

(13) Inlet for the water jacket

(14) Water pump

(15) Engine oil pump

(16) Prelube pump

(17) Engine oil cooler

(18) Secondary engine control module (ECM)

(19) Relief valves for excess air in the crankcase

(20) Air starting motor

(21) Turbocharger oil accumulator

View of the left side of a typical G3520B Engine

(23) Service indicator for the air filter

(24) Lifting eye

(25) Sensor for nitrogen oxide

(26) Buffer for the sensor for nitrogen oxide

(27) Crankcase breathers

(28) Cooler for the fuel

(29) Oil level gauge

(30) Fuel shutoff

(31) Gas pressure regulator

(32) Oil filler

(33) Outlet for the SCAC (separate circuit aftercooling)

(34) Temperature regulator for the aftercooler

(53) SCAC inlet

(36) SCAC pump

(37) Emergency stop button

(38) Primary ECM