Fuel - Pump Replacement Procedure

Classification:
EF&EC93-03

Section:
Engine Fuel

Reference:
TECHNICAL BULLETIN NTB93-078

Models:
Altima, Sentra

Date:
May 11, 1993

FUEL PUMP REPLACEMENT PROCEDURE

APPLIED MODELS:
1993 Altima
1991-93 Sentra

ALTIMA SERVICE PROCEDURE

CAUTION:
Do not perform these procedures while smoking, near any open flame, electrical contacts or other potential source of ignition.

1. Release fuel pressure using work support in CONSULT.

OR

A. Remove fuse for fuel pump.
B. Start engine.
C. After engine stops, crank engine two or three times to make sure that fuel pressure is released.
D. Turn ignition switch off and install fuse for fuel pump.

2. Remove rear seat bottom.

3. Remove inspection hole cover.

CAUTION:

Use rubber gloves to prevent fuel from contacting the skin when removing the fuel hoses and pump.

4. Disconnect electrical connector and fuel hoses.

5. Using special tool (P/N J38879), remove fuel tank lock ring.

6. Remove fuel gauge assembly and disconnect the fuel hoses and connector.

Fuel Pump Removal:

7. Remove fuel pump from fuel pump bracket by pinching the two (2) tabs together and lifting out of fuel tank bracket as shown.

NOTE:
If the fuel sending unit needs to be removed, then pull up the large tab on the sending unit on the opposite end from the float. The sending unit will lift straight out of the tank bracket.

8. Installation procedure is the reverse order of removal.

CAUTION:
^ Always replace fuel tank O-ring with a new one.

^ Align parts with alignment marks.

^ Tighten lock ring to specified torque 22-36 ft.lbs.

^ After installation, run engine and check for leaks at connections.

SENTRA SERVICE PROCEDURE

CAUTION:
Do not pertorm these procedures while smoking, near any open flame, electrical contacts or other potential source of ignition.

1. Release fuel pressure using work support in CONSULT.

OR

A. Remove fuse for fuel pump.
B. Start engine.
C. After engine stops, crank engine two or three times to make sure that fuel pressure is released.
D. Turn ignition switch off and install fuse for fuel pump.

2. Remove rear seat bottom.

3. Remove Inspection hole cover.

CAUTION:
^ Use rubber gloves to prevent fuel from contacting the skin when removing the fuel hoses and pump.

Fuel Pump Removal:

4. Disconnect electrical connector and fuel hoses.

5. Remove the six screws.

6. Remove fuel gauge sending unit and disconnect the fuel hoses and connector.

7. Remove fuel pump from fuel pump bracket by pinching the tab and lifting the pump out of fuel tank bracket.

8. Installation procedure is the reverse order of removal.

CAUTION:
^ Always replace fuel tank O-ring with a new one.
^ Tighten screws to specified torque 2.4-3.1 ft.lbs.
^ After installation, run engine and check for leaks at connections.





WARRANTY INFORMATION