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(4) Make sure the exhaust system is in proper alignment. There should be at least 25mm (1 inch) (5) Tighten muffler to catalytic converter flange mounting nuts to 28.5 N·m (21 ft. lbs.). (6) Tighten tailpipe clamp to 48 N·m (35 ft. lbs.). HEAT SHIELDS REMOVAL (1) Raise and support the vehicle. heat shields to the frame and/or floor pan (Fig. 19). (3) When removing muffler heat shield, the muf- fler front support bracket must be removed first. (4) Slide the shields out around the exhaust sys- tem. INSTALLATION (1) Position the heat shields to the floor pan or the frame and install the screws and/or nuts. (2) Tighten the nuts and/or screws to 45 N·m (33 ft. lbs.) (Fig. 19). (3) Lower the vehicle. SPECIFICATIONS TORQUE SPECIFICATIONS Fig. 19 Heat Shield Removal/Installation 1 – BOLTS DESCRIPTION N·m Ft. In. Lbs. Lbs. Catalytic Converter/Exhaust Pipe Exhaust Clamp—Nuts 61 45 — Crossmember to Sill—Bolts 42 31 — Crossmember to Transmission Mount—Nuts 22 16 — Exhaust Pipe to Manifold— Nuts Early Build 31 23 — Exhaust Manifold to Engine 2.5L Engine— Bolt #1 41 40 — Bolts #2–5 31 23 — Nuts #6&7 31 23 — Exhaust Manifold to Engine 4.0L Engine— Nuts #6&7 31 23 — Nuts/Bolts #1,2,3,4,5,8,9,10&11 33 24 — Muffler to Catalytic Converter— Exhaust Clamp Nut Early 61 45 — Exhaust Pipe to Catalytic Converter Flange—Nuts Late Build 28.5 21 — Muffler to Catalytic Converter Flange—Nuts Late Build 28.5 21 — Tailpipe to Rear Tailpipe Late Build 48 35 — Tailpipe to Rear Tailpipe Early Build 27 20 — Oxygen Sensors 27 20 — 11 - 12 EXHAUST SYSTEM XJ REMOVAL AND INSTALLATION (Continued) 2000 XJ Service Manual March, 2000 |