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309-00-6 Exhaust System 309-00-6 REMOVAL AND INSTALLATION All Rear Muffler Assemblies 6 Cylinder Catalyst Assembly Removal and Installation Removal and Installation WARNING: Care must be taken so as to avoid manifold. damage to exhaust system & fuel tank heat NOTE: Manifold studs and mating exhaust nuts shields. If shields are damaged or substantially are one time use parts only and must be distorted they should be replaced, and the fuel replaced. tank inspected for damage. 2. Remove bolts connecting intermediate muffler to 1. Remove the nuts connecting the intermediate catalyst assembly. Discard the gasket. muffler assembly to the rear muffler assembly. Discard the gasket. NOTE: The bolts connecting the intermediate muffler to the catalyst assembly are of a 2. Disconnect rear muffler assembly from the self-threading type that have been used to tap hangers at the front and rear of the muffler and thread directly into the catalyst assembly outlet remove by pushing muffler rearward and gently pipe flange. Conventional class 10.0 bolts with moving ’over-axle pipe’ through cavity above IRS similar geometry can be used in place of these (sedan only). self-threading bolts. 3. Installation is the reverse of the removal procedure. 3. Disconnect the catalyst assembly from the hanger on the outlet pipe and remove. NOTE: Install new gaskets at each point. 4. Installation is the reverse of the removal NOTE: Assembly is the reverse of the removal procedure. procedure. To ease reattachment of rubber NOTE: Care must be taken when attaching a isolators to hanger brackets, a mild detergent catalyst assembly to a manifold such that it is solution can be applied to the bracket. correctly aligned. To achieve this, firstly do up the NOTE: Care must be taken when attaching a nuts by hand as far as possible (using a socket catalyst assembly to a manifold such that it is with extension), and then torque the nuts up in correctly aligned. To achieve this, firstly do up the steps alternating between the two until the nuts by hand as far as possible (using a socket nominal torque is achieved. with extension), and then torque the nuts up in steps alternating between the two until the 8 Cylinder Catalyst Assemblies (LHS & nominal torque is achieved. RHS) NOTE: Upon conclusion of assembly, system should be checked for leaks and correct Removal and Installation alignment, refer Sections on Diagnosis and 1. Remove nuts connecting catalyst assembly to Testing and General Procedures. manifold. Both sides will require the removal of an additional nut retaining a heat shield. All Intermediate Muffler Assemblies NOTE: Manifold studs and mating exhaust nuts are one time use parts only and must be Removal and Installation replaced. 1. Remove bolts connecting intermediate muffler to catalyst assembly (6 cylinder) or Y-pipe assembly 2. Remove nuts connecting Y-pipe to catalyst (8 cylinder). Discard the gasket. assembly. Discard the gasket(s). NOTE: The bolts connecting the intermediate 3. Disconnect catalyst assembly from the hanger on muffler to the catalyst/Y-pipe assemblies are of a the outlet pipe and remove. self-threading type that have been used to tap 4. Installation is the reverse of the removal thread directly into the catalyst assembly outlet procedure. pipe flange (6 cylinder) or directly into weld nuts NOTE: Care must be taken when attaching a on the Y-pipe outlet flange (8 cylinder). catalyst assembly to a manifold such that it is Conventional class 10.0 bolts with similar correctly aligned. To achieve this, firstly do up the geometry can be used in place of these nuts by hand as far as possible (using a socket self-threading bolts. with extension), and then torque the nuts up in 2. Remove the nuts connecting the intermediate steps alternating between the two until the muffler assembly to the rear muffler assembly. nominal torque is achieved. Discard the gasket. 3. Disconnect intermediate muffler assembly from the hanger on the outlet pipe and remove. 4. Installation is the reverse of the removal procedure. G56318 en |