TIAGO TIGOR CNG - SERVICE MANUAL

1.2L REVOTRON Bi FUEL CNG ENGINE 123  THERMOSTAT REMOVAL 1. Drain the coolant. (Refer “Coolant Replacement Procedure). 2. Access the thermostat from top by removing air filter assembly. 3. Remove the spring band clip and disconnect the hose . 4. Remove hose connection to auxiliary Tank. 5. Remove thermostat to inlet heater hose connection. 6. Remove Hose thermostat to bypass pipe connection. 7. Remove Lambda sensor bracket mounting. 8. Remove the cover mounting nuts . FITMENT For fitment follow the reverse order of removal.  Tighten fasteners to the recommended torque.  Thermostat cover mounting: M6 Bolt (1 Kg-m) Checking procedure of thermostat: 1. Remove thermostat element from thermostat housing. 2. Mount thermostat element in a suitable fixture and place the fixture in a vessel filled with water. 3. Fix dial gauge with its spindle on valve surface with a pretension of 0.5mm 4. Heat the vessel and measure the water temperature with proper thermometer. 5. Note down the temperature when dial gauge needles starts moving indicating valve opening. 6. Note down the water temperature for needle movement (for valve fully open position). 7. The opening temperature and fully open temperature as measured should be as per the mentioned specifications. If they do not meet the specifications, replace the thermostat element.