Cooling system data (VW Golf 1)

Thermostat

Opening temperature:

• Engines 1.1/1.3 l until July 1978 - 87°C
• 1.1/1.3L engines from August 1978 - 92°C
• Engines 1.5/1.6 l until July 1978 - 80°C
• Engines 1.5/1.6/1.8 l since August 1978 - 87°C

Radiator cap (expansion tank) — valve opening pressure, bar:

• 3/part # 171121321A — 0.9—115
• All others - 1.2-1.35

Radiator Fan Thermal Switch

Switch-on temperature:

• until July 1978 — 90°C—95°C
• since July 1978 — 93°C—98°C

Shutdown temperature:

• until July 1978 — 85°C—90°C
• since July 1978 — 88°C—93°C

Tightening torques for threaded connections (kgm)

• Thermostat housing mounting bolts - 2.0
• Cooling pump mounting bolts - 1.0
• Fastening the pulley to the pump - 2.0
• Temperature sensor - 1.0
• Lower radiator mount - 1.0
• Radiator Fan Mounting Bolts - 1.0
• Fastening the fan shroud to the radiator - 1.0