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Ford CSG-649 — Thermostat Replacement

Maintenance · Thermostat and water outlet housing

For the Ford CSG-649, from the Ford service manual.

Applies to: Ford CSG-649

Before you start

  • Do not attempt to repair the thermostat; replace it if not operating properly.

Procedure

  1. Drain the radiator so that the coolant level is below the thermostat.
  2. Remove the water outlet housing retaining bolts; bend the radiator upper hose upwards and remove the thermostat and gasket.
  3. Clean the water outlet housing gasket surfaces; coat a new gasket with water-resistant sealer and position it to the head opening.
  4. Install the thermostat with the copper pellet or element toward the engine and the flange in the recess.
  5. Position the water outlet housing against the head and install and torque the retaining bolts to specifications.
  6. Fill and bleed the cooling system; operate the engine to normal temperature and check coolant level and for leaks.

Specs & values

Full service-parts list: Ford CSG-649 →

Source: Ford service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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