SMU - SECTION 6F - REVISED EXHAUST MANIFOLD. Buick Riviera 1997

REVISION: 11/18/96

THIS BULLETIN IS BEING REVISED TO CORRECT ENGINE DESIGNATION (CORRECT VIN AND RPO CODE). PLEASE DISCARD CORPORATE BULLETIN NUMBER 63-66-05 (SECTION 6 - ENGINE). ----------------------------------------------------------------------

SUBJECT: SERVICE MANUAL UPDATE - SECTION 6F - REVISED EXHAUST MANIFOLD PIPE REMOVAL AND INSTALLATION PROCEDURE

MODELS: 1997 BUICK RIVIERA WITH 3.8L ENGINE (VINS K, 1 - RPOS L36, L67)

THIS BULLETIN IS BEING ISSUED TO REVISE THE EXHAUST MANIFOLD TO CATALYTIC CONVERTER MANIFOLD PIPE REMOVAL AND INSTALLATION PROCEDURE IN SECTION 6F OF THE SERVICE MANUAL.

MANIFOLD PIPE REMOVAL/INSTALLATION PROCEDURE

FIGURE 1

REMOVE OR DISCONNECT

1. RAISE AND SUPPORT THE VEHICLE. REFER TO JACKING AND LIFTING IN "GENERAL INFORMATION" OF THE SERVICE MANUAL.

2. SUPPORT THE CATALYTIC CONVERTER ASSEMBLY WITH SUITABLE JACK.

3. FOUR NUTS FROM THE MANIFOLD PIPE TO CATALYTIC CONVERTER.

4. TWO NUTS FROM THE MANIFOLD PIPE TO EXHAUST MANIFOLD.

5. EXHAUST MANIFOLD PIPE.

INSTALL OR CONNECT

1. EXHAUST MANIFOLD PIPE.

2. LOOSELY INSTALL TWO NUTS AT MANIFOLD PIPE TO EXHAUST MANIFOLD.

3. FOUR NUTS AT CATALYTIC CONVERTER.

O TIGHTEN

TIGHTEN THE FOUR NUTS TO 24 N.M (18 LB FT).

O TIGHTEN

TIGHTEN THE TWO NUTS AT EXHAUST MANIFOLD TO 35 N.M (26 LB FT).

4. REMOVE THE JACK.

5. LOWER THE VEHICLE.

FIGURES: 01 ATTACHMENTS: 00

Object Number: 96553 Size: MF

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