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
| • | All fasteners and threaded holes on the 4.8, 5.3, and 6.0 liter engines utilize metric threads. |
| • | All M11 cylinder head bolts are the same length and have a common torque/angle tightening strategy. |
| • | Some applications may use a second design camshaft retainer plate and bolts. Refer to
Camshaft Installation
. |
Changed Engine Specifications
Piston and pin specifications have been revised.
Disassembly and Assembly Procedure Revisions
| • | For certain applications, a spacer plate has been added between the flywheel and rear of the crankshaft. It is necessary to remove the spacer plate prior to removal and installation of the crankshaft rear oil seal and clutch pilot bearing. |
| • | All applications use full-floating design piston pins. |
Engine Mechanical Diagnostic Procedure Revisions
All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The diagnostic flow is the place to start
when repairs are necessary. For a detailed explanation, refer to
Strategy Based Diagnosis
in General Information or
Diagnostic Starting Point - Engine Mechanical
.
New Special Tools Required
Refer to
Special Tools
.
A Component Comparison from the Previous Year
| • | All M11 cylinder head bolts are the same length. |
| • | All applications use full-floating design piston pins. |
| • | Some applications may use a second design camshaft retainer plate and bolts. Refer to
Camshaft Installation
. |
