Cooling System Components, Engine Side

Cooling system components, engine side

Engine codes AEG, AVH and AZG (from model year 1999)

1- To top of expansion tank
2- O-ring
^ Replace if damaged
3- Connection heater heat exchanger
4- Connector
^ 4-pin
^ Wiring chamber 3 and wiring chamber 4 for Engine Coolant Temperature (ECT) sensor -G62-
^ Gold plated contacts for ECT -G62-

5- Engine Coolant Temperature (ECT) sensor -G62-
^ For engine control module
^ With Engine Coolant Temperature (ECT) Sensor -G2-
^ Gold plated contacts for Engine Coolant Temperature (ECT) Sensor -G62-
^ Release pressure in coolant system if necessary, before removing components
6- Retaining clip
^ Check seated securely
7- From heat exchanger 74
8- Coolant pipe

9- From ATF radiator (automatic transmission) or shape hose
10- 10 Nm
11- To bottom of expansion tank
12- O-ring
^ Always replace
13- Union
14- To top of radiator
15- From bottom of radiator
16- Oil cooler
^ Ensure clearance to adjacent components
17- 15 Nm

18- Coolant thermostat
^ Starts to open at approx. 86°C
^ Opening stroke: min. 7 mm
19- Toothed belt
^ Mark direction of rotation before removing
^ Check for wear
^ Do not kink
20- Coolant pump
^ If damaged or leaking replace complete
21- Rear toothed belt guard
22- 20 Nm
23- Throttle valve control module
^ Heated by coolant

Engine codes BBW, BEV

1- To top of expansion tank
2- O-ring
^ Replace if damaged
3- Quick release coupling
^ Connection heater heat exchanger
4- Connector
^ 4-pin
^ Wiring chamber 3 and wiring chamber 4 for Engine Coolant Temperature (ECT) sensor -G62-
^ Gold plated contacts for ECT -G62-

10- To bottom of expansion tank
11- O-ring
^ Always replace
12- Union
13- To top of radiator
14- From bottom of radiator
15- Oil cooler
^ Ensure clearance to adjacent components
16- 15 Nm
17- Coolant thermostat
^ Starts to open at approx. 86°C
^ Opening stroke: min. 7 mm

18- Toothed belt
^ Mark direction of rotation before removing
19- Coolant pump
^ If damaged or leaking replace complete
20- Rear toothed belt guard
21- 20 Nm
22- Washer
^ Note part number
23- Throttle valve control module
^ Heated by coolant