Renault Coupes/Sedans/Wagons 1975-1985 Repair Guide

Cylinder Head

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REMOVAL, INSPECTION & INSTALLATION



1,289 and 1,397cc Engines


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Fig. Fig. 1 Exploded view of the 1,289cc and 1,397cc engines' cylinder head and related components



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Fig. Fig. 2 Using a dial indicater to check the cylinder liner protrusion on 1,289cc and 1,397cc engines



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Fig. Fig. 3 Use a straightedge to check head flatness-after machining the head surface, measure head height



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Fig. Fig. 4 Proper head gasket installation on the 1,289cc and 1,397cc engines



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Fig. Fig. 5 Cylinder head bolt tightening sequence for the 1,289cc and 1,397cc engines



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Fig. Fig. 6 To remove the cylinder head, remove the rocker cover, the rocker shaft (A) and the head bolts (B)



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Fig. Fig. 7 Remove the pushrods one at a time and keep them in order



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Fig. Fig. 8 Remove the water pump, disconnect the exhaust pipe and break the head gasket loose



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Fig. Fig. 9 Lift the cylinder head off of the engine block ...



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Fig. Fig. 10 ... and remove the old head gasket



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Fig. Fig. 11 Scrape the remaining gasket material off of the cylinder head and block



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Fig. Fig. 12 A wire wheel may be used to clean the combustion chambers of carbon deposits



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Fig. Fig. 13 Check the cylinder head for flatness across the head surface



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Fig. Fig. 14 Checks should be made both straight across the cylinder head and at both diagonals

  1. Disconnect the battery.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the air cleaner.
  6.  
  7. Disconnect and tag all wires, cables and hoses connected to any part of the head.
  8.  
  9. Remove the water pump.
  10.  
  11. Disconnect the exhaust pipe at the manifold.
  12.  
  13. Disconnect the hood lock control cable.
  14.  
  15. Remove the valve cover.
  16.  
  17. Remove the rocker shaft and pushrods. Keep the pushrods in order for replacement.
  18.  
  19. Remove all the cylinder head bolts, except the one next to the distributor, which you should loosen one half a turn.
  20.  
  21. Using a plastic, wood or rubber mallet, break the head loose from the liners by tapping lightly on the sides of the head. Once the head is loose, remove the last bolt.
  22.  
  23. Lift the head off the engine. Be careful, it's heavy.
  24.  
  25. Clean the mating surface of the head and block thoroughly.
  26.  
  27. Remove the manifolds, carburetor or fuel injection assemblies. Remove the spark plugs.
  28.  
  29. Clean the threaded holes in the head with compressed air.
  30.  
  31. Check the liner protrusion. Liner protrusion should be 0.0016-0.0050 in. If not, the liner bottom seals must be replaced.
  32.  
  33. Remove all other parts from the head, except for the valves.
  34.  
  35. Using a stiff wire brush made for the purpose, mounted in an electric drill, clean the carbon from the cylinder head combustion chambers.
  36.  
  37. Lay a straightedge across the head mating surface. Measure at different points between the head and the straight-edge with feeler gauges. The maximum gap should be 0.002 in. If deformation exceeds this, the head must be milled flat. The minimum head height should be 2.870 in. If milling cuts below this, the head must be replaced.
  38.  
  39. If the valves are to be replaced, go on to Valves, Removal and Installation, later in the text.
  40.  
  41. If you'd like to decarbon the tops of the pistons at this time, or do anything which will result in the turning of the crankshaft, you'll need a special tool (Mot.521) to hold the liners in place.
  42.  
  43. When you're ready to install the head make sure you use a new gasket. Do not use sealer on the head gasket or on the water pump or end plate gaskets. The head gasket is positioned with the stamped word HAUTE-Top up. Place the gasket on the block and place the head in position. Make sure the gasket is still in alignment. Install the head bolts and hand-tighten all of them. Tighten the bolts to 40 ft. lbs. in a circular pattern beginning at the middle and working towards the ends. All other parts should be installed in reverse order of removal.
  44.  

1,565 and 1,647cc Engines


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Fig. Fig. 15 Exploded view of the 1,565cc and 1,647cc engine cylinder head and related components



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Fig. Fig. 16 Break the 1,565cc and 1,647cc engine cylinder head loose by twisting the head side-to-side on the center locating dowel-this keeps the cylinder liners from being jarred loose



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Fig. Fig. 17 Cylinder liner retainer clamp installed



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Fig. Fig. 18 Measuring the cylinder head flatness-a gap of up to 0.002 inches is acceptable



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Fig. Fig. 19 Measuring cylinder liner protrusion using a dial indicator



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Fig. Fig. 20 Correct gasket tab mounting



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Fig. Fig. 21 The four longest head bolts go in the holes marked (A)



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Fig. Fig. 22 Cylinder head bolt tightening sequence for the 1,565cc and 1,647cc engines

  1. Disconnect the battery.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the air cleaner.
  6.  
  7. On the 18i and Fuego, remove the grille and the grille upper crossmember.
  8.  
  9. Disconnect all wires, cables and hoses connected to any part on the head. Tag these for easy installation. On fuel injected cars, clamp off the injection hoses after removal to prevent fuel spillage.
  10.  
  11. Remove the valve cover.
  12.  
  13. Remove the water pump and alternator drive belts.
  14.  
  15. Remove the distributor.
  16.  
  17. Disconnect the exhaust pipe at the manifold. On cars with catalytic converters, remove the converter.
  18.  
  19. On the 18i and Fuego, remove the diagnostic connector.
  20.  
  21. Remove the alternator on R-12, R-15, R-17, and Gordini.
  22.  
  23. Remove the rocker arm shaft assembly.
  24.  
  25. Remove the pushrods, keeping them in order for replacement in their original positions.
  26.  
  27. Remove the rubber washers and cups in the spark plug recesses.
  28.  
  29. Remove the head bolts.
  30.  
  31. The head will stick to the cylinder liners. DO NOT ATTEMPT TO LIFT OFF THE HEAD BEFORE IT IS BROKEN LOOSE FROM THE LINERS! To break the head loose, tap around the head with a plastic, wood or rubber mallet, gently, and rotate the head using the built-in locating dowel in the block, near the distributor, as a pivot point.
  32.  
  33. Lift the head slightly, and remove the valve lifters, keeping them in order for replacement in their original locations.
  34.  
  35. Remove the head.
  36.  
  37. Remove the valve lifter housing gasket.
  38.  
  39. Using a special tool, Mot.521-01, secure the cylinder liners in place. Keep this tool in place the whole time the head is off. This tool prevents dislodgment of, or damage to the liner seals.
  40.  
  41. Clean the mating surface of the head and block thoroughly. There must be no trace of old gasket material or other debris. Do not scrape the surfaces! If necessary, use a gasket dissolver, available in most auto parts stores.
  42.  
  43. Take care that no debris enters the oil, coolant or bolt holes. Clean these holes thoroughly.
  44.  
  45. All bolt holes must be free of any oil. Use a kitchen baster for this operation.
  46.  
  47. Decarbon the combustion chambers using brushes made for this purpose mounted in an electric drill. Remove all traces of carbon from the chambers and valve faces.
  48.  
  49. If the valves are being removed, skip on to Valves, Removal and Installation, later.
  50.  
  51. Lay a straightedge across the face of the head. Using feeler gauges, check between the straightedge and the head's gasket surface. There should be no gap, ideally, but a gap of up to .002 in. is acceptable. Resurface the head if necessary. Most automotive machine shops perform this operation.
  52.  
  53. Check the head for any sign of cracks. Auto machine shops have ultraviolet crack detectors for this purpose.
  54.  
  55. Check the liner protrusion above the block surface. Protrusion should be 0.004-0.007 in. If not, the liner seals must be replaced.
  56.  

To install:

  1. Head installation is the reverse of removal. Note the following points:
  2.  
    1. Never reuse a gasket.
    2.  
    3. Cylinder head positioning is vitally important since it can effect alignment of the distributor shaft with its drive pinion. Renault recommends using an alignment gauge, Mot. 446 and aligning tool, Mot.451, when installing the head.
    4.  
    5. Once the head has been positioned on the block, the head gasket cannot be reused, if it is necessary to lift the head for any reason.
    6.  
    7. When installing the head, be careful not to move the valve lifter chamber gasket.
    8.  
    9. Make sure that the lifters are firmly seated in the head so they won't drop out during head installation.
    10.  
    11. Lubricate the head bolts with a light coating of clean engine oil prior to insertion. Hand-tighten all the bolts, then torque them to the valve shown in the Torque Specifications Chart, in the sequence shown.
    12.  
    13. When assembly is complete, start the engine, allow it to reach normal operating temperature. Shut it off and allow it to cool for 50 minutes, then back off the bolts 1 / 2 turn in sequence and tighten each, in sequence to 60-65 ft. lbs. Check rocker arm adjustment.
    14.  


1984-85 Fuego Models With a 2.2 Liter Engine


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Fig. Fig. 23 Exploded view of the 2.2 liter engine cylinder head and related components



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Fig. Fig. 24 Using a camshaft sprocket holding tool to remove the retaining bolt (3)



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Fig. Fig. 25 Break the cylinder head gasket loose by leaving bolt A loose and hitting the head at point B with a block of wood and a hammer



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Fig. Fig. 26 Cylinder liner retaining clamps installed on the 2.2 liter engine



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Fig. Fig. 27 Cylinder head bolt tightening sequence for the 2.2 liter engine

  1. Disconnect the battery ground.
  2.  
  3. Remove the drive belts from the accessories.
  4.  
  5. Remove the alternator and AIR pump.
  6.  
  7. Remove the air conditioning compressor from its mounts, but do not disconnect the refrigerant lines. Wire it securely out of the way.
  8.  
  9. Drain the coolant from the engine.
  10.  
  11. Remove the crankshaft balancer.
  12.  
  13. Remove the manifolds.
  14.  
  15. Remove the timing belt cover.
  16.  
  17. Release the timing belt tensioner and remove the belt.
  18.  
  19. Remove the rocker cover.
  20.  
  21. Hold the camshaft sprocket firmly. There are tools made for the purpose.
  22.  
  23. Remove the sprocket nut and lift off the sprocket.
  24.  
  25. Remove all the cylinder head bolts except the front right one.
  26.  
  27. Loosen the remaining bolt and pivot the head on it to break the head loose from the liners. It may be necessary to get the head moving by tapping it with a wood mallet.
  28.  
  29. Install cylinder liner clamp #588 on the block.
  30.  
  31. Installation is the reverse of removal. Make sure that all gasket material is removed from the mating surfaces. Always use a new gasket. The dowel at the right front of the head will help you in aligning the head during installation. Use the sequence illustrated when tightening the head bolts. Tighten the bolts first to 37 ft. lbs., then 59 ft. lbs., then back them off 1 / 2 turn and retorque them to 64-72 ft. lbs.
  32.  

 
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