BMW Coupes and Sedans 1970-1988 Repair Guide

Oil Pump

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REMOVAL & INSTALLATION



Except 325 Series, 524td, 528e,1600, 2000, 2002 and M3 Models

  1. Remove the oil pan. On the 318i and M3, only the lower section of the pan need be removed.
  2.  
  3. Remove the bolts retaining the sprocket to the oil pump shaft and remove the sprocket.
  4.  
  5. On 4-cylinder engines:
    1. Remove the oil pump retaining bolts and lower the oil pump from the engine block.
    2.  
    3. Check the installed location of the O-ring seal, between the housing and the pressure safety line and make sure it is installed so it will seal properly.
    4.  
    5. Tighten the sprocket retaining nut to 18-22 ft. lbs. (23-29 Nm).
    6.  
    7. Be sure that the oil bore in the shim(s) is correctly positioned during the oil pump installation. If there is a lot of play in the drive chain, add one or more shims. The drive chain should give slightly under light thumb pressure.
    8.  

  6.  
  7. On 6-cylinder engines:
    1. Remove the oil pump retaining bolts and lower the oil pump from the engine block. On 6-cylinder. engines, there are 3 bolts at the front and 2 bolts attaching the rear of the oil pickup to the lower end of a support bracket. It is necessary to remove all 5 bolts.
    2.  
    3. Do not loosen the chain adjusting shims from the 2 moun