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Home >> Mazda >> 1982 >> B2000 Base >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 626, GLC & B2000 4-Cylinder >> Camshaft >> Timing Chain & Sprockets >> Installation (RWD models)

Installation (RWD models)

  1. Position crankshaft with keyway up. Place timing chain on crankshaft sprocket. On 1970 cc engines, 2 plated links of chain straddle timing mark on sprocket. On 1490 cc engines, plated link aligns with timing mark on crankshaft sprocket. See Figure.
  2. Install crankshaft sprocket and chain onto crankshaft, ensuring chain-to-sprocket positioning does not change. Install oil pump drive sprocket onto crankshaft. Install and tighten oil pump sprocket and drive chain on oil pump.
  3. Install chain adjuster guide (49-3953-260) onto chain tensioner to keep snubber retracted. Install chain tensioner onto cylinder block. Using new head gasket, place cylinder head onto cylinder block.
  4. Place timing chain around camshaft sprocket with timing mark and plated link aligned. Lay camshaft on cylinder head and engage camshaft with sprocket and chain. Ensure all timing marks are aligned. See Figure.
  5. Tighten camshaft sprocket. Install rocker arm assembly and cylinder head bolts. Tighten cylinder head bolts. Install front cover and oil pan.
  6. Adjust timing chain tension by slightly rotating the crankshaft in the direction of engine rotation, then proceeding as follows:
  7. Insert a screwdriver through access hole in side of front cover (or through top of cylinder head on 1490 cc engines) and press in on top of guide strip. DO NOT use excessive pressure. While retaining light pressure on guide strip, tighten guide strip screws through 2 holes in front cover.
  8. Remove the timing chain adjuster guide from tensioner to release snubber. Install tensioner cover. Using new gaskets where required, install oil pan and remaining components in reverse order of removal.
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