REMOVAL & INSTALLATION
- Raise and support the rear end on jackstands.
- Disconnect the downstream air injection tube at the converter.
- On the 4-cylinder engine, the front pipe is bolted to the converter at a facing flange. On the 6-cylinder engines, the front pipe and converter are clamped together at a slip-fit joint. On all engines, the rear joint of the converter is a slip-fit.
- To avoid damaging any components, it will probably be necessary to heat any slip-fit joint with an oxyacetylene torch, until the joint is cherry red. Then, place a block of wood against the converter and drive it off of the pipe.
When using a torch, make certain that no combustibles, brake or fuel lines are in the immediate area of the torch.
- Position the replacement converter in the system and install the rear clamp. Hand tighten the nuts.
- On 4-cylinder engines: bolt the flanges together at the front end. Tighten the bolts to 25 ft. lbs. (34 Nm). Tighten the rear clamp nuts to 45 ft. lbs. (61 Nm).
- On 6-cylinder engines, install the front clamp, make sure that the converter is properly positioned and tighten the front and rear clamp nuts to 45 ft. lbs. (61 Nm).
- Install the downstream air injection tube and tighten the clamps to 36-48 inch lbs. (4-5 Nm).
- Lower the Jeep.