Engine Side Overview

Component Notes And Information

NOTE:
^ During service procedures, refer to the illustration above and the information below.
^ When the engine is warm, the cooling system is under pressure-
^ Release any pressure before starting repair work.
^ Hoses are secured with spring-type clips, when performing repairs; only use spring-type clips.
^ VAG 1921 pliers are recommended for installing spring-type clips.
^ When installing coolant hoses; always route stress-free, so they don't come into contact with other components (observe markings on coolant connection and hose).

1 O-ring
- Always replace
2 Bolt
- Tighten to: 25 Nm (18 ft lb)
- To loosen and tighten pulley, counter-hold using a punch inserted through the holes
3 Pulley
- For coolant pump
4 Bolt
- Tighten to: 20 Nm (15 ft lb)
5 Coolant pump
- Check shaft for ease of movement removing and installing: refer to Replacement. Service and Repair
6 Coolant pipe
7 Connection
- On cylinder head
8 Coolant hose from heat exchanger
- Coolant hose connections, diagram. Diagrams
9 Throttle Valve Control Module
- Heated by coolant
10 Coolant hose to heat exchanger
- Coolant hose connections, diagram. Diagrams
11 Junction piece
12 Cover
13 Cap
- Check cooling system using VAG 1274 tester and VAG 1274/4 adapter test pressure: 1.2 to 1.5 bar
14 Angle piece
15 Bolt
- Tighten to: 10 Nm (7 ft lb)
16 2-pin harness connector
- Black
17 Coolant overflow hose
- Coolant hose connections, diagram. Diagrams
18 Expansion tank
19 Coolant hose
- Coolant hose connections, diagram. Diagrams
20 ATF cooler
- Only installed in vehicles with Auto Trans.
- Removing and installing, refer to Transmission and Drivetrain
21 Lower coolant hose
- From bottom of radiator
- Coolant hose connections, diagram. Diagrams
22 Upper coolant hose
- To top of radiator
- Coolant hose connections, diagram. Diagrams
23 Thermostat housing
- Disassembly and assembly, refer to Replacement. Service and Repair
24 0il cooler
- Removing and installing, refer to Engine Lubrication found in the Engine Section.
25 Coolant hose to cylinder block
- Coolant hose connections, diagram. Diagrams
26 Drain screw
- Tighten to: 10 Nm (7 ft lb)
- Coolant, draining and filling, refer to Coolant Replacement. Service and Repair