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SPECIFICATIONS TORQUE DESCRIPTION N·m Ft. In. Lbs. Lbs. Catalytic Converter-to- 28 — 250 Exhaust Pipe-to-Manifold— 31 23 — Heat Shield Retaining— 2.0 — 20 Muffler-to-Catalytic U-bolt clamp 47 35 — Rear Tailpipe Hanger— 22 — 192 CATALYTIC CONVERTER 4.0L REMOVAL WARNING: IF TORCHES ARE USED WHEN WORK- (1) Raise and support the vehicle. lubricant. Allow 5 minutes for penetration. (3) Remove nuts from the catalytic converter and exhaust pipe flange connection (Fig. 3). (4) Loosen exhaust clamp from the catalytic con- verter and muffler connection (Fig. 3). (5) Disconnect oxygen sensor wiring (Fig. 3). tion with a torch until the metal becomes cherry red. (7) While the metal is still cherry red, twist the catalytic converter back and forth to separate it from INSTALLATION (1) Position the catalytic converter onto the exhaust pipe flange connection (Fig. 3). Tighten the (2) Install the muffler onto the catalytic converter until the alignment tab is inserted into the align- (3) Install the exhaust clamp at the muffler and catalytic converter connection (Fig. 3). Tighten the (4) Connect oxygen sensor wiring (Fig. 3). Fig. 3 Exhaust Pipe-to-Catalytic Converter-to-Muffler Connection 1 - EXHAUST CLAMP ASSEMBLY Fig. 4 Catalytic Converter—Removal 1 - EXHAUST PIPE WITH FLANGE WG EXHAUST SYSTEM SUPPLEMENT 11s - 3 EXHAUST SYSTEM SUPPLEMENT (Continued) 2001 JEEP GRAND CHEROKEE |