F 350 4WD Pickup V8-7.3L DSL (1988)
Radiator Hose: All Technical Service Bulletins
Upper Radiator Hose - Coolant Leak
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COOLING SYSTEM - 7.3L DIESEL - COOLANT LEAK FROM TOP RADIATOR HOSE AT THERMOSTAT HOUSING
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LEAKS - COOLANT - 7.3L DIESEL - LEAK FROM TOP RADIATOR HOSE AT THERMOSTAT HOUSING
Article No. 88-4-16
LIGHT TRUCK:
1988 E-SERIES, F-SERIES
ISSUE:
Coolant leaks from the upper radiator hose at the thermostat housing (water outlet elbow) may be mis-diagnosed as coolant leaking from the
cylinder head gasket. The coolant collects and follows the cylinder head gasket seam down the side of the engine and drops off when it
reaches the lower front corner of the crankcase.
ACTION:
To correct this, retighten the upper radiator hose clamp and check the cooling system to determine if further corrective action is required.
Refer to the following service procedure.
1.
Tighten the upper radiator hose clamp at the thermostat housing to 30 in.lbs. (3 N-m).
2.
Check to make sure the coolant leak has been corrected.
3.
If coolant leak is still present, check the thermostat housing gasket and replace the gasket if required.
PART NUMBER
PART NAME
CLASS
E3TZ-8255-A
Gasket -
AM
Thermostat Housing
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Eligible Under Basic Warranty Coverage
OPERATION: 880416A - Tighten upper radiator hose
TIME:
0.3 Hr.
OPERATION: 880416B - Tighten upper radiator hose and replace gasket
TIME:
0.9 Hr. DLR. CODING: Basic Part No. 8255 - Code: 48
