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Catalyst, Selective Catalytic Reduction (SCR): Installation

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
GC0143734Courtesy of CHRYSLER GROUP, LLC
  1. Install a NEW  exhaust flange gasket between the Selective Catalytic Reduction Catalyst (SCR) (2) and the extension pipe.
  2. Position the SCR (2) onto the flange and install flange nuts (3) finger tighten.
  3. Install the isolators (1) onto the SCR (2) hanger rods.
  4. Install the tail pipe assembly. Refer to TAILPIPE, EXHAUST, INSTALLATION .
  5. Check the exhaust system for contact with the body panels. A minimum of 25 mm (1.0 in.) is required between the exhaust system components and body/frame parts. Make the necessary adjustments, if needed.
  6. Tighten the flange nuts (3) to 60 N.m (44 ft. lbs.).
  7. Install the Particulate Matter (PM) sensor. Refer to SENSOR, PARTICULATE MATTER, INSTALLATION .
  8. Install the NOx sensor 1/2. Refer to SENSOR, NOX, INSTALLATION .
    GC0179975Courtesy of CHRYSLER GROUP, LLC
  9. Connect the exhaust temperature sensors wire harness connector (1).
    GC0155206Courtesy of CHRYSLER GROUP, LLC
  10. Connect the Diesel Exhaust Fluid (DEF) fluid supply line (1).
  11. Connect the DEF injector wire harness connector (2).
    GC0179950Courtesy of CHRYSLER GROUP, LLC
  12. Connect the exhaust temperature sensors wire harness connector (1).
  13. If equipped, install skid plates.
  14. Remove support and lower the vehicle.
  15. Connect both negative battery cables.
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