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REPAIR INSTRUCTIONS
CONTINUATION OF ADJUSTMENTS FOR
REMAINING CYLINDERS
1. Using the barring socket, manually rotate
the engine crankshaft (Figure 332) in normal
rotation direction 120 degrees until the
center of the timing pointer hole in flywheel
housing aligns with the “2 & 5” mark on the
flywheel and the No. 5 piston is on the
compression stroke.
332
Figure 332 — Engine Crankshaft Rotation
2. Adjust the final intake and exhaust valve
lash, and engine brake slave piston lash for
cylinder No. 5 as described in the procedure
for cylinder No. 1. (Continue this process for
each of the remaining cylinders, following
the engine firing order sequence,
1-5-3-6-2-4.)
3. Make sure that the Jacobs electrical
connector, MACK part No. 4559-17366, is
installed in each of the engine brake cylinder
head cover spacers. Install one valve cover
gasket in each spacer and position the
spacers on the cylinder heads.
4. Connect the solenoid wires to the inside
terminal of the electrical connectors on the
spacers. Connect the brake lead wires from
the engine harness to the outside terminals.
5. Install the gaskets in the cylinder head valve
covers and position the covers on the
spacers.
6. Install six mounting bolts in each of the
cylinder head covers/spacers and tighten
the bolts to 20 lb-ft (27 N•m).
Engine Speed and Position Sensors
Installation and Adjustment
ENGINE SPEED SENSOR
Because the engine speed sensor (Figure 333) is
controlled by the measurement and selection of
proper mounting shims, the installation procedure
is as follows:
1. Using a depth micrometer or vernier caliper,
measure from the sensor mounting surface
on the flywheel housing to the OD of a
flywheel ring tooth.
Measurement must be made to the tooth OD or
an inaccurate measurement will result.
2. Select and install a shim on the sensor
mounting flange. Refer to following chart for
shim selection.
SHIM SELECTION CHART FOR ENGINE SPEED AND
ENGINE POSITION SENSORS
1. Barring Socket
J 38587-A
2. Flywheel Housing
3. Flywheel
Depth as Measured
Use the Following
P/N 505GC28 Shims
Less than/equal to 1.328
(2) P30
1.329 through 1.343
(1) P15 + (1) P30
1.344 through 1.358
(1) P30
1.359 through 1.373
(1) P15
Equal to/greater than 1.374
None
5_106_00.bk Page 304 Friday, August 4, 2000 11:17 AM
BDC for engine manuals and specs