Service Information  Document ID# 641058 
      1998 Cadillac Seville   



SMU - Cylinder Head Tightening Specification Clarification #99-06-01-016 - 
(10/04/1999)
Cylinder Head Tightening Specification Clarification
1993 Cadillac Allante, Sixty Special (FWD)
1993-96 Cadillac Fleetwood
1993-99 Cadillac DeVille, Eldorado, Seville
1994-99 Cadillac Concours
1995-99 Oldsmobile Aurora
1999 Marine
with 4.0 L or 4.6 L Engine (VINs C, Y, 9 -- RPOs L47, LD8, L37)
This bulletin is being issued to clarify the cylinder head tightening 
specification listed in the following procedures in the Engine Mechanical 4.0 L 
and 4.6 L sections of the appropriate Service Manuals:
  Specifications -- Fastener Tightening Specifications 
  Cylinder Head Replacement -- Installation Procedure 
  Cylinder Head Installation 
The torque specification and sequence for the cylinder head bolts (1--10) using 
J 36660-A is:
  First Pass -- 40 N·m (30 lb ft) 
  Second Pass -- 70 Degrees 
  Third Pass -- 60 Degrees 
  Fourth Pass -- 60 Degrees (190 Degrees total) 
The torque specification for the three front M6 cylinder head bolts is:
12 N·m (106 lb in) 


 
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        Document ID# 641058 
      1998 Cadillac Seville