Flywheel - Inspect - Perkins 1104E Systems Operation Testing And Adjusting

SENR9977
The correct piston height must be maintained in order
to ensure that the engine conforms to the standards
for emissions.
Note: The top of the piston should not be machined.
If the original piston is installed, be sure that the
original piston is assembled to the correct connecting
rod and installed in the original cylinder.
Six grades of length of connecting rods determine
the piston height above the cylinder block. The grade
of length of a connecting rod is identified by a letter or
a color. The letter or the color is marked on the side
of the connecting rod. Refer to Testing and Adjusting,
"Connecting Rod - Inspect" and Specifications,
"Connecting Rod" for additional information.
Illustration 59
(1) Dial gauge
(2) Dial gauge holder
1. Use the dial gauge (1) and the dial gauge holder
(2) in order to measure the piston height above
the cylinder block. Use the cylinder block face to
zero the dial gauge (1).
2. Rotate the crankshaft until the piston is at the
approximate top center.
3. Position the dial gauge holder (2) and the dial
gauge (1) in order to measure the piston height
above the cylinder block. Slowly rotate the
crankshaft in order to determine when the piston
is at the highest position. Record this dimension.
Compare this dimension with the dimensions that
are given in Specifications, "Piston and Rings".

Flywheel - Inspect

Alignment of the Flywheel Face
Illustration 60
1. Install the dial indicator. Refer to Illustration 60.
2. Set the pointer of the dial indicator to 0 mm
(0 inch).
3. Turn the flywheel. Read the dial indicator for every
90 degrees.
g00983585
Note: During the check, keep the crankshaft pressed
toward the front of the engine in order to remove any
end clearance.
4. Calculate the difference between the lowest
measurement and the highest measurement of the
four locations. This difference must not be greater
than 0.03 mm (0.001 inch) for every 25 mm
(1.0 inch) of the radius of the flywheel. The radius
of the flywheel is measured from the axis of the
crankshaft to the contact point of the dial indicator.
Testing and Adjusting Section
i01897548
g00987751
53