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:
| • | A component comparison from the previous year |
| • | 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 |
Component Comparison
| • | Revised the water pump seal |
| • | Revised the engine coolant thermostat |
| • | New roller pivot type valve rocker arm assemblies using a one
piece valve rocker arm support to replace the ball pivot type valve rocker
arm system |
| • | Cylinder heads revised using dry holes for the valve rocker arm
bolts |
Torque Values and/or Fastener Tightening Strategies
| • | Cylinder head bolts, the crankshaft bearing cap bolts, the connecting
rod bolts, and balance shaft bolt 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 followed using
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 mechanical specifications remain the same as the 2001 products.
New Sealants and/or Adhesives
No new sealants or adhesive have been added.
Disassembly and Assembly Procedure Revisions
| • | Valve rocker arm and pushrod |
| • | Timing chain and sprockets |
| • | Discard all used gaskets, seals, or O-ring seals unless
otherwise indicated. |
| | Gaskets, seals, or O-ring seals that
can be reused will be identified in the specific service procedure. |
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
No new special tools are required.
