The purpose of New Product Information is to highlight
or indicate important product changes from the previous model year.
Changes may include one or more of the following items:
| • | Torque values and/or fastener tightening strategies |
| • | Changed engine specifications |
| • | New sealants and/or adhesives |
| • | Disassembly and assembly procedure revisions |
| • | Engine mechanical diagnostic procedure revisions |
| • | New special tools required |
| • | A component comparison from the previous year |
Torque Values and/or Fastener Tightening Strategies
| • | Cylinder head bolts, crankshaft bearing cap bolts, and connecting
rod bolts apply a torque angle strategy. |
| | In an on-vehicle situation where a torque angle meter may not fit into
the vehicle packaging, a three step tightening process may be used with a
torque wrench. |
| • | Certain fasteners should not be reused. Bolts, studs, or other
fasteners that must be replaced will be called out in the specific service
procedure. |
Changed Engine Specifications
Engine specifications remain the same as the 1998 products.
Disassembly and Assembly Procedure Revisions and Additions
| • | A new design Teflon® crankshaft rear oil seal installation
procedure |
| • | Engine block plug information has been enhanced to include the
engine oil pressure gauge sensor and the engine oil pressure gauge sensor
fitting. |
Engine Mechanical Diagnostic Procedure Revisions
| • | Valve Train diagnostic information is now provided in table form.
Potential or probable causes are supplied for each specific concern. |
| • | Engine Noise diagnostic information is now provided in table form.
Potential or probable causes are supplied for each specific concern. |
New Special Tools Required
| • | Tool J 35621-B
is a revision
of J 35621-A and services ALL applications. |
| • | Tool J 41712
has been added
for the removal and installation of the oil pressure gauge sensor. |
