Renault Coupes/Sedans/Wagons 1975-1985 Repair Guide

Front Pipe and Catalytic Converter

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REMOVAL & INSTALLATION





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Fig. Fig. 1 Front pipe and catalytic converter mounting details



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Fig. Fig. 2 Measuring point for exhaust bolt spring length



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Fig. Fig. 3 Apply penetrating oil, then use a wrench to loosen the exhaust flange clamp

  1. Allow ample time for the exhaust system to cool down. Saturate all bolts, nuts and clamps with a penetrating spray and allow 5 minutes to soak in.
  2.  
  3. Remove the clamp at the rear of the catalytic converter.
  4.  
  5. Remove the front pipe-to-exhaust manifold flange bolts or flange clamp.
  6.  
  7. If possible, heat the rear exhaust pipe-to-converter joint until cherry red. Otherwise, using a flat chisel, pry between the pipe joint to loosen the converter.
  8.  
  9. Twist the converter back and forth to disengage the pipes.
  10.  
  11. If the pipe is distorted badly, tools are available to reshape the ends to ensure a proper fit and seal of the pipes. To install:
  12.  
  13. Connect the converter to the rear exhaust pipe. Install the clamp, but do not tighten it.
  14.  
  15. Connect the front pipe to the exhaust manifold. Install the bolts or clamp, but do not tighten it.
  16.  
  17. Align the pipe and converter, then tighten the rear exhaust pipe-to-converter clamp.
  18.  
  19. Tighten the front pipe-to-manifold bolts or clamp.
  20.  

 
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