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Home >> Mazda >> 1981 >> B2000 Base >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> MAZDA Engines - 4-Cylinder >> Engine & Cylinder Head >> Cylinder Head >> Removal

Cylinder Head: Removal

  1. Remove engine lifting brackets from cylinder head. Remove exhaust manifold along with port liners and gaskets. Disconnect ignition wires and vacuum lines at distributor. Remove lock nut, then remove distributor from cylinder head.
  2. Disconnect hoses and remove air pump with bracket. Remove water pump fan and pulley. Disconnect hose from PCV valve at intake manifold. On manual transmission models, disconnect anti-afterburn valve. On all models, remove attaching bolts, then remove intake manifold and carburetor as an assembly.
  3. Remove rocker arm cover, gasket and oil seals. Install ring gear brake tool (49 0118 271A or equivalent) on flywheel to prevent flywheel from rotating. Remove lock nut and washer, then slide distributor drive gear from camshaft. Remove camshaft sprocket lock nut. Remove cylinder head-to-front cover attaching bolt.
    NOTE: On FWD models, remove the timing chain tensioner from the timing chain cover.
  4. Loosen cylinder head bolts gradually, in the reverse order of the tightening sequence, and remove bolts. Remove rocker arm assembly. Carefully pull camshaft to rear and remove from sprocket and cylinder head. Remove camshaft sprocket.
    CAUTION: On RWD models, timing chain should be lifted upwards to prevent tensioner head from disengaging and dropping down inside front cover. Installation of chain adjuster guide (49-3953-260) through front cover inspection hole prior to sprocket removal will prevent disengagement.
  5. Remove camshaft bearings from cylinder head, noting their respective locations. Remove the cylinder head and gasket.
    Fig 1: Engine Cross-Section with Detail of Timing Chain Tensioner (RWD Models)
    G09336286Courtesy of MAZDA MOTORS CORP.
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