Cooling system components, engine side
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Volkswagen Jetta, 2002 Volkswagen GTI, 2001 Volkswagen Jetta, 2001 Volkswagen GTI, and 2000 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
1 - Pressure cap
- Check with cooling system tester VAG 1274 and adapter VAG 1274/9
- Test pressure 1.4-1.6 bar
2 - O-Ring
- Replace if damaged
3 - Coolant expansion tank
- Check for leaks in cooling system using cooling system tester VAG 1274 and adapter VAG 1274/8
4 - 10 Nm
5 - Upper coolant pipe
- Clipped into the bulkhead
- Coolant hoses, connection diagram, refer to Coolant hoses, connection diagram
6 - To heat exchanger
- Coolant hoses, connection diagram, refer to Coolant hoses, connection diagram
7 - Throttle valve control module J338
- Heated by coolant
8 - To upper coolant hose
- Coolant hoses, connection diagram, refer to Coolant hoses, connection diagram
9 - To upper radiator
- Coolant hoses, connection diagram, refer to Coolant hoses, connection diagram
10 - Gasket
- Always replace
11 - To lower radiator
- Coolant hoses, connection diagram, refer to Coolant hoses, connection diagram
12 - Thermostat housing
- Disassembling and assembling, refer to Thermostat housing, disassembling and assembling
13 - After-run coolant pump V51
- Check, refer to After-Run Coolant pump V51 , checking
14 - From heat exchanger
- Coolant hoses, connection diagram, refer to Coolant hoses, connection diagram
15 - 25 Nm
16 - Oil cooler
- Coat contact surfaces outside of sealing ring with sealant AMV 188 001 02
- Make sure free movement among surrounding components
- See Note, refer to Lubrication system components, removing and installing
17 - Screw plug
18 - Coolant pipe
- Coolant hoses, connection diagram, refer to Coolant hoses, connection diagram
19 - Coolant pump
- Observe installed position
- Check for smooth running
- Replace completely if damaged or if leaking
- Removing and installing, refer to Coolant pump, removing and installing
20 - 15 Nm
21 - Pulley
- For coolant pump
22 - 25 Nm
23 - To Y-branch of heat exchanger/coolant pump
- Coolant hoses, connection diagram, refer to Coolant hoses, connection diagram