Engine Side

Cooling system components, engine side





1. 20 Nm
2. Toothed belt guard -lower part
3. O-ring
^ Always replace
4. Coolant pump
^ Check for ease of movement
^ removing and Installing coolant pump and compact bracket, Refer to Water Pump.
^ Disassembling and Assembling, Refer to Water Pump.
5. Oil cooler
^ Removing and installing
6. Retaining clip
^ Ensure seated securely
7. Connector
^ 4-pin
^ Wiring chamber 1 and wiring chamber 3 for -G62
8. Engine - Coolant Temperature sensor -G62
^ With Engine Coolant Temperature gauge sensor -G2
^ For engine control module
^ If necessary, release pressure in cooling system before removing
^ Checking: Refer to Powertrain Mangement.
9. Plug
10. To heat exchanger
^ Coolant hose connection diagram
11. Connection
12. 10 Nm
13. Upper coolant pipe
^ Secured to intake manifold
^ Coolant hose connection Refer to Radiator Hose.
14. From heat exchanger
^ Coolant hose connection diagram Refer to Radiator Hose.
15. Lower coolant line
^ Secured to oil filter bracket
^ Coolant hose connection diagram
16. Cap
^ Check with cooling system tester VAG 1274 and adapter VAG 1274/9
^ Test pressure: 1.4 to 1.6 bar
17. O-ring
^ Replace if damaged
18. Expansion tank
^ Leak test cooling system with cooling system tester VAG 1274 and adapter VAG1 274/8
19. Lower coolant hose
^ From bottom of radiator
^ Coolant hose connection diagram Refer to Radiator Hose.
^ Secured to radiator with retaining clip
^ Make sure securely seated
20. Compact bracket
^ For tensioning viscous fan coupling, Generator and power steering pump
^ Removing and installing Refer to Water Pump.
21. V-belt
^ Removing and installing Refer to Drive Belts, Mounts, Brackets and Accessories.
^ Removing and installing coolant pump and compact bracket Refer to Water Pump.
22. Radiator fan