Overview - Coolant Pump/Coolant Thermostat

Fig 1: Exploded View Of Coolant Pump & Coolant Thermostat

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Connection
2. O-Ring
   • Always replace
   • Coat with coolant
3. Centering Pin
4. Bolt
   • Tightening specification and sequence. Refer to Fig 2.
5. Seal
   • Always replace
6. Coolant Pump
   • Removing and Installing. Refer to COOLANT PUMP, REMOVING AND INSTALLING .
   • For a new coolant pump, remove the protective cap
7. Bolt
   • Tightening sequence. Refer to Fig 3.
8. Toothed Belt
   • For the coolant pump
   • Removing and Installing. Refer to COOLANT PUMP TOOTHED BELT, REMOVING AND INSTALLING .
9. Bolt
   • 9 Nm
10. Toothed Belt Guard
11. Bolt
    • 10 Nm + 90° additional turn
    • Always replace
    • Left-hand thread
12. Toothed Belt Sprocket
    • Note the installation position
13. Intake Side Balance Shaft Seal
    • Replacing. Refer to BALANCE SHAFT GASKET, REPLACING, INTAKE SIDE .
14. Balance Shaft
15. Seal
    • Always replace
16. Bolt
    • 9 Nm
17. Connection
18. Spring
19. Seal
    • Always replace
20. Engine Temperature Control Actuator -N493-
    • Removing and installing

Engine Temperature Control Actuator N493 - Tightening Specification and Sequence 

Fig 2: Engine Temperature Control Actuator Tightening Sequence

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Coolant Pump - Tightening Specification and Sequence 

Fig 3: Coolant Pump - Tightening Sequence

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.