Contents Wiring diagrams Section: Power unit All sections

Function: engine cooling 4B12 Peugeot 4007 I

Power unit ~170 words

Description

The engine is cooled by a forced water circulation cooling system

Data

  • A thermostatic regulator controls the entry of the coolant circulating in the engine cooling radiator to reduce the temperature variations of the coolant
  • Elimination of the radiator deflector connection screws

"a" engine cooling radiator

"b" top hose

"c" expansion chamber

"d" fan

"e" fan deflector

"f" lower hose

"g" fan

"h" transmission oil radiator hose and pipe

Coolant pump

The water pump is a centrifugal pump mounted in front of the cylinder block

The coolant pump is driven by the accessories drive belt

Specifications

  • Flow: 185 l/h
  • Impeller diameter: 62 mm
  • Pulley diameter: 137 mm

Water circulation

Engine cold

Arrows = circulation of coolant

(1) coolant pump

(2) thermostat

(3) heater matrix unit

(4) gearbox oil radiator

(5) lower hose

(6) exhaust gas recycling valve / throttle butterfly housing

(7) cooling radiator

(8) filler plug

(9) top hose

(10) expansion chamber

(11) throttle butterfly housing

Engine hot

Arrows = circulation of coolant

Data

total capacity of circuit7,5 litres
circuit cap calibration0,93 to 1,23 bars
minimum calibration of the cap0,83 bar
start of opening of the thermostatic regulator82,5 °C
total opening of the thermostatic regulator95 °C
fan triggering threshold: air conditioning compressor (operating): 1st gear70 °C
fan triggering threshold: air conditioning compressor (off): 1st gear90 °C
fan triggering threshold: 2nd speed106 °C