C4.4 Industrial Engine Flywheel - Inspect Caterpillar

Alignment of the Flywheel Face

Illustration 1	g01334421
Typical example

1. Install Tooling (A) in illustration 1, as shown.

2. Set the pointer of the dial indicator to 0 mm (0 inch).

3. Turn the flywheel. Read the dial indicator for every 45 degrees.

   Note: During the check, keep the crankshaft pressed toward the front of the engine in order to remove any end play.

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.

Flywheel Runout

Illustration 2	g01334422
Typical example

1. Install Tooling (A) in illustration 2, as shown.

2. Set the pointer of the dial indicator to 0 mm (0 inch).

3. Turn the flywheel. Read the dial indicator for every 45 degrees.

4. Calculate the difference between the lowest measurement and the highest measurement of the four locations. This difference must not be greater than 0.30 mm (0.012 inch).