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
| • | New engine block M10 X 1.5 metric attachments for
the engine mounts, the starter motor, and the transmission |
| • | New oil pan M10 X 1.5 metric attachment for the
transmission |
| • | New crankshaft with a unique crankshaft clutch pilot bearing hole
and 3 mm shortened engine flywheel mounting flange |
| • | Revised crankshaft rear oil seal and crankshaft rear oil seal
housing for the shortened crankshaft engine flywheel mounting flange |
| • | New engine flywheels for shortened crankshaft engine flywheel
mounting flange |
| • | Eliminated the fuel pump switch from the engine oil pressure gauge
sensor |
| • | Revised the water pump seal |
| • | Revised the engine coolant thermostat |
Engine Block and Oil Pan Partial Metrification
| • | The engine block has been
changed to M10 X 1.5 metric fasteners for the starter motor
(1), the transmission (3), and the engine mount attachments (4). |
| • | The oil pan has been changed to M10 X 1.5 metric
fasteners for the transmission attachments (2). |
Partial Metric Engine Block Identification
| • | Engine blocks manufactured
at the Saginaw casting plant are cast with 090M (1) and 14099090M (4) casting
numbers for partial metric engine block identification. |
| • | Engine blocks manufactured at the Defiance casting plant are cast
with 090M (3) and 14099090M (2) casting numbers for partial metric engine
block identification. |
Torque Values and/or Fastener Tightening Strategies
| • | Cylinder head bolts, the crankshaft bearing cap bolts, and the
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 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 1998 products.
New Sealants and/or Adhesives
Additional applications have been added to the table including:
| • | Balance shaft driven gear bolt |
| • | Expansion cup plug (camshaft rear bearing hole) |
| • | Expansion cup plug (balance shaft rear bearing hole) |
| | Refer to sealers, adhesives, and lubricants. |
Disassembly and Assembly Procedure Revisions or Additions
| • | A revised design Teflon® rear crankshaft oil seal |
| • | Engine block plug information has been enhanced to include the
dowel pins (cylinder head locator) and dowel straight pins (transmission locator). |
| • | Crankshaft Rear Oil Seal and Housing has been enhanced to include
the spring type S pin (crankshaft rear oil seal housing locator). |
| • | Intake Manifold Assemble information includes enhanced fuel seal
installation detail. |
| • | 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
| • | Tool J 35621-B
is a revision of the J 35621-A, and can be used to service All the
crankshaft rear oil seal installation applications. |
| • | Tool J 41712
has been added for removal and installation of the engine oil
pressure gauge sensor. |
