The DT466 water pump thermostat chapter is Chapter 16 of the International DT466 and DT530 (2000-2003) service manual, covering cooling-system service for these engines. This 28-page section details coolant filter, thermostat and water pump removal, inspection, testing and installation.
Official document details
| Brand | International / Navistar |
| Model coverage | DT466 and DT530 (2000-2003) |
| System/Group | Service Manuals — Chapter 16, Water Pump & Thermostat |
| Publication no. | Chapter of DT466/530 Service Manual (EGES2101 series) |
| Year/Revision | 2000-2003 applications |
| Pages | 28 |
| File size | 1.7 MB |
| Format | |
| Language | English |
Procedures in this DT466 water pump thermostat chapter
- Coolant filter removal, including safe deaeration-tank cap procedure
- Coolant filter header, check valves, seal and O-Ring service
- Thermostat inspection for cracks and pitting
- Thermostat operation check — start-to-open and full-open temperatures
- Thermostat and water pump installation with new O-Rings
Applicable engines and cooling service
This chapter applies to International DT466 and DT530 engines of the 2000-2003 range. It specifies testing the thermostat in heated water to its start-to-open temperature of 180°F and full-open temperature of 202°F, with a minimum full-open travel of 0.410 in, and stresses using only genuine International thermostats for correct coolant flow and positive sealing. The removal steps include the four-step deaeration-tank cap procedure to avoid scalding, relieving system pressure at the radiator cap, and noting that the coolant filter header carries two check valves that stop coolant flow when the filter is removed. Full engine and dealer support is available from the International Trucks website.
Who needs this water pump thermostat chapter
Technicians correcting overheating or coolant-flow complaints on a DT466 or DT530 use this chapter for the exact thermostat test values and installation sequence. It also serves shops replacing a coolant filter header or reconditioning the cooling system during an overhaul, and gives the visual inspection criteria that decide whether a thermostat is reused or replaced.
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