EGR-BPT Valve - Bracket Broken and Rattling

Classification:
EC99-016A

Reference:
NTB00-005A

Date:
December 15, 2000

1998-2000 ALTIMA BPT VALVE BRACKET BROKEN

ATTENTION:
This bulletin amends NTB00-005. Information has been added to the Applied Vehicles section of the bulletin. Please discard all paper copies of NTB00-005.

APPLIED VEHICLES:
1998-2000 Altima (L30)

APPLIED VIN:
Vehicles built before: 1N4DL01A7YC102699

APPLIED DATE:
Vehicles built before: August 10, 1999

APPLIED ENGINE #:
Vehicles built before: KA24-350649

SERVICE INFORMATION
If a rattle noise is heard under the hood of a 1998-2000 Altima built prior to the applied VIN, date, or engine number, the lower BPT bracket may be broken, causing the BPT valve to rattle against the BPT tube or EGR valve.

A replacement lower BPT bracket and bolt is now available to correct the described condition, if it should occur. Use the procedure below to verify the condition exists and replace the lower BPT bracket and bolt.

SERVICE PROCEDURE

1. Confirm the rattle noise exists.

2. Confirm the lower BPT bracket is broken.





3. Remove the BPT valve and upper bracket from the lower BPT bracket. Save the two upper bracket bolts that hold the BPT valve onto the lower bracket for re-assembly later (see Figure 1).

4. Remove the lower BPT bracket from the collector and discard the old lower bracket bolt.

5. Install the replacement lower bracket onto the collector using the replacement lower bracket bolt (see the PARTS INFORMATION Section of this bulletin).





NOTE:
Position the bracket midway between the EGR valve base and BPT exhaust tube (see Figure 2).

6. Tighten the replacement lower bracket bolt to 70 kg-cm (60 in-lb.).

NOTE:
Hold the bracket while tightening the replacement bolt to assure that the bracket remains positioned midway between the EGR valve and BPT exhaust tube.

7. Re-install the BPT valve and upper bracket onto the lower bracket using the two original upper bracket bolts (removed in Step 3). Torque the bolts to 70 kg-cm (60 in-lb.).

NOTE:
Ensure that the lower bracket does not contact the EGR valve base or the BPT exhaust tube.

8. Start the vehicle and verify that the rattle noise is gone.





PARTS INFORMATION

CLAIMS INFORMATION





Submit a Primary Failed Part (PP) line using the claims coding shown.