Cooling System/Thermostats THERMOSTAT TEST AND REPLACEMENT 1. Visually inspect area around thermostat housing for leaks. 2. Remove thermostat cover (A) and thermostat(s). CD30297 -UN-17FEB95 CD7297 -UN-07MAR95 NOTE: Engines may be equipped with either one or two thermostats. It is recommended to replace the thermostats after every two years of service. 3. Test in hot water correct opening and closing (see Specifications). CD,3274,G30,15 -19-01FEB94 NOTE: Some engines may have the thermostat directly installed in cylinder head (A). The by-pass function is performed via the tube (B) connected to water pump (C). Install thermostat with jiggle pin on top for a proper filling.
CD30437 -UN-18MAY95 CTM3274 (01JUL99) 30-21 Saran Liter Engines CD,3274,G30,38 -19-01FEB94 060799 PN=220 4. Install thermostat(s) in proper location. NOTE: Thermostat(s) with extended end (B) must fit with by-pass hole in housing (C). -UN-17FEB95 5. Install thermostat cover using new gasket, tighten to 30 N·m (22 lb-ft). CD30299 CD,3274,G30,35 -19-04JAN99 30 21