REPAIR INSTRUCTIONS
Page 297
ENGINE SETUP AND
ADJUSTMENTS
Fuel Injection Timing
There is no longer a need to set injection pump-
to-engine timing. Consequently, the timing pointer
on the engine front cover is eliminated. In place of
the timing procedure, unit pump-to-engine timing
is programmed into and controlled by the EECU.
However, the flywheel still has pump timing
marks to accommodate application to both
E-Tech™ and E7 engines; the marks are not
needed for the E-Tech™ engine.
Valve Yoke, Valve Lash and Engine
Brake Adjustments
[213 NB]
GENERAL INSTRUCTIONS
The pinless type inlet valve yoke is self-leveling
and does not have a yoke leveling adjustment
screw. Inlet valve lash adjustments are performed
in the normal manner with the rocker arm
adjusting screw.
Yoke and valve adjustments are done in two
stages. Adjust the pin-type yoke clearance
FIRST, and then adjust the valve lash. Make sure
both adjustments are done in firing order
sequence. Manually rotate the engine in normal
rotation direction until the center of the timing
pointer hole in the flywheel housing aligns with
the valves 1 and 6 mark on the flywheel and the
No. 1 piston is on the compression stroke. The
flywheel has three stamped locations at 120-
degree intervals for valve settings.
Yoke and valve adjustments must be made under
static conditions with coolant temperature below
100
°
F (37
°
C).
Engine firing order is 1-5-3-6-2-4.
SPECIAL TOOL REQUIRED
r
Engine Barring Socket J 38587-A
LOCATING AND MARKING FLYWHEEL VALVE
ADJUSTMENT MARKINGS
Some engines may be equipped with flywheels
that have missing or illegible valve adjustment
markings. If this problem is encountered, a typical
flywheel can be marked while the engine is in the
chassis.
TYPICAL FLYWHEELS
On a typical flywheel, the top center (TC)
markings, and the valve adjustment markings,
are directly in line with the clutch mounting bolt/
bolt holes. To determine if the engine is equipped
with a typical flywheel, view the flywheel through
the timing access hole in the flywheel housing.
Align the TC markings with the timing pointer. If
the flywheel is typical, there should be a clutch
mounting bolt/bolt hole directly in line with the TC
marking. In this case, the valve adjustment
markings should be in line with a clutch mounting
bolt at three locations. Refer to Figure 325.
5_106_00.bk Page 297 Friday, August 4, 2000 11:17 AM
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