Diesel Engine - Redesigned Fuel Return System

89ford36

FUEL RETURN SYSTEM - 7.3L DIESEL - REDESIGNED - SERVICE PROCEDURE - ENGINE SERIAL NUMBERS 630772 THROUGH 634154

Article No. 89-25-17

LIGHT TRUCK: 1989 E-250, E-350, F SUPER DUTY, F-250, F-350

Figure 1:

ISSUE: The fuel return system for the 7.3L diesel engine was redesigned to simplify the hose routing and component usage.

ACTION: If service for the fuel return system is required, refer to the following hose installation procedure.

1. Install new continuous vent with check valve (E9TZ-9K061-A), Figure 1.

Figure 2:

Figure 3:

NOTE: THE FUEL RETURN HOSE SIZES WERE INCREASED FROM 3/16 INCH TO 1/4 INCH INSIDE DIAMETER. THE LARGER I.D. RETURN HOSE REQUIRES THIS NEW CONTINUOUS VENT WITH CHECK VALVE TO ACCEPT THE 1/4 INCH HOSE.

2. Install new 1/4 inch I.D. bulk hoses cut to length indicated in Figures 2 & 3.

PART NUMBER PART NAME CLASS

E9TZ-9K061-A Continuous Vent w/Check C
Valve
E9TZ-9B255-A Hose Clamps (20 Req.) B
E9TZ-9A564-A Fuel Return Tee (4 Req. for F, C
6 Req. for E)
E9TZ-9A664-B 90~ Fuel Return Tee (4 Req. C
for F, 3 Req. for E)
E9TZ-9324-A 1/4" I.D. Bulk Hose (Cut to C
specified length)
E9TZ-9F736-A Injection Pump Elbow Fitting C
E9TZ-9E313-A Fuel Return Hose Guard C
E9TZ-9E313-B Inj. Pump Fuel Return Hose C
Guard
E9TZ-9F734-A Fuel Return Tee Junction C

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 4500