Overview - Coolant Pump/Thermostat, Version 1: Notes

Fig 1: Exploded View Of Coolant Pump/Thermostat, Version 1

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Coolant Thermostat Housing
   • Removing and installing. Refer to COOLANT THERMOSTAT, REMOVING AND INSTALLING .
2. Coolant Thermostat
   • For the cylinder block coolant circuit
   • Starts to open at approximately 97 to 105 °C (206.6 to 221 °F)
   • There are different versions.
   • Removing and installing. Refer to COOLANT THERMOSTAT, REMOVING AND INSTALLING .
3. Seal
   • Replace after removing.
4. Coolant Pump
   • Replace the toothed belt also if replacing the coolant pump
   • Removing and installing. Refer to COOLANT PUMP, REMOVING AND INSTALLING .
5. Bolt
   • Tightening specification and sequence. Refer to Fig 2.
   • Thread cutting
   • Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the tightening specification
6. Seal
   • Replace after removing.
7. Toothed Belt Guard
   • For the coolant pump toothed belt
8. Bolt
   • 20 Nm +90°
   • Replace after removing.
9. Seal
   • Replace after removing.
   • Install only on version 1
   • Removing and installing. Refer to COOLANT PUMP TOOTHED BELT SPROCKET, REMOVING AND INSTALLING .
10. Toothed Belt
    • Replace the toothed belt also if replacing the coolant pump
    • For the coolant pump
11. Toothed Belt Sprocket
    • Removing and installing. Refer to COOLANT PUMP TOOTHED BELT SPROCKET, REMOVING AND INSTALLING .
    • For the coolant pump
12. Bolt
    • 8 Nm
13. Bolt
    • Tightening specification and sequence. Refer to Figure.
    • Thread cutting
    • Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the tightening specification
14. Cap
    • For the coolant thermostat
15. Seal
    • Replace after removing.
16. Coolant Thermostat
    • For main coolant circuit (radiator)
    • Through 11/2012: begins opening at approximately 80 °C (176 °F)
    • From 11/2012: begins opening at approximately 87 °C (188.6 °F)
    • Removing and installing. Refer to COOLANT THERMOSTAT, REMOVING AND INSTALLING .
    • Installation position. Refer to the figure below;
17. Bolt
    • Tightening specification and sequence. Refer to Installing .

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

• Must fit in the thermostat housing with the centering pin inside the guide -arrow-.

Fig 2: Tightening Sequence For Thermostat Housing To Coolant Pump

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tighten bolts in the sequence -A through F-.