Diesel Engine - High Pressure Oil Pump Leakage: Overview

Article No.
04-4-4

03/08/04

ENGINE - 7.3L DIESEL DI - HIGH PRESSURE OIL PUMP LEAK

FORD:
1998-2003 E SERIES
1999-2003 SUPER DUTY F SERIES
2000-2003 EXCURSION, F-650, F-750

This article supersedes TSB 03-21-50 to update the service procedure and illustration.

ISSUE





Some 1998-2003 E-Series, 1999-2003 Super Duty, 2000-2003 Excursion, and 2000-2003 F650/750 vehicles equipped with a 7.3L Diesel engine may exhibit an oil leak at the high pressure oil pump outlet fittings and/or end plug (see Figure 1). The leak may appear to be a rear main crankshaft seal, oil pan gasket, or other engine oil leak due to the drain hole machined in the crankcase valley which allows any oil in the valley to run down the back of the engine.

ACTION

High pressure oil pump leaks at the outlet fittings and/or end plug can be serviced without removing the pump assembly. Replace the 0-rings on the fillings and the end plug using Kit 2C3Z-9G804-AA. All three (3) 0-rings should be replaced. Apply liquid thread sealer (included in the kit) prior to reinstallation. Refer to the following Service Procedure for details.





Labor Operations Claiming Chart





Parts Block

OTHER APPLICABLE ARTICLES: NONE

SUPERSEDES: 03-21-50

WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage (And Emissions Warranty Coverage For 1998-2000 Model Years Only)

DEALER CODING
CONDITION
BASIC PART NO. CODE
9A543 D8





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