F 350 4WD Pickup V8-6.9L DSL (1983)
Thermostat: All Technical Service Bulletins
Thermostat - Replacement Recommendations
Article No. 84-5-18-S
THERMOSTAT (6.9L DIESEL) - REPLACEMENT
LIGHT TRUCKS 1983-84 E & F SERIES
This article is being re-issued to present illustrations of acceptable and non-acceptable replacement thermostats.
Figure 25
Figure 26
Replacement thermostats other than the specified Motorcraft or International Harvester thermostats may result in engine overheat damage. The specified
thermostat (Figure 25) does not contain an internal by-pass, since a by-pass with an integral check ball is located in the cylinder block. If the technician
installs an aftermarket thermostat with a "will fit" design that has a flat washer secured to the power pill (Figure 26) the thermostat will block off a water
passage, causing engine overheat and possible damage.
Therefore, whenever the thermostat is replaced, it is mandatory that only the specified Motorcraft E3TZ- 8575-A or International Harvester 1803357
C91 thermostat be installed.
PART NUMBER
PART NAME
CLASS
E3TZ-8575-A
Thermostat
A
ARTICLE SUPERSEDED: 84-5-18
WARRANTY STATUS: "INFORMATION ONLY"
