Remove
NOTE: If a front crankshaft seal wear sleeve has been installed during a previous repair, it must be removed
before removing the crankshaft gear. Refer to Procedure 001-025 in Section 1.
Use a heavy-duty bearing separator, Part Number 3162427, or a gear puller, as illustrated, to remove the
crankshaft gear.
Clean and Inspect for Reuse
Inspect for cracks and broken or chipped teeth.
The gear must be replaced if it is damaged.
NOTE: If there is damage to the front crankshaft gear teeth or there are signs of excessive heat, make sure to
inspect the associated lubricating oil pump and, for front gear train engines, the fuel pump and camshaft gears for
damage.
Inspect the gear and, for front gear train engines only, the keyway for nicks or burrs.
Inspect the gear for nicks or burrs.
Use fine crocus cloth to remove nicks and burrs.
Inspect the crankshaft gear journal, gear alignment dowel pin and dowel pin hole for burrs or damage.
Use fine crocus cloth to remove burrs.
Replace the gear alignment dowel pin if damage is found.
NOTE: Rear gear train engines do not have any type of alignment pin for the front crankshaft gear.
Measure the crankshaft gear bore inside diameter.
Measure the crankshaft gear journal outside diameter.
Install
Use a soft hammer to install the gear alignment dowel into the crankshaft.
The pin must be 1.02 mm [0.040 in] above the crankshaft surface.
NOTE: Rear gear train engines do not have any type of alignment pin for the front crankshaft gear.
Heat the gear in an oven for a minimum of 45 minutes, but not more than 2 hours at 177°C [350°F].
Use assembly to lubricate lubricant, Part Number 3163087 or equivalent, to lubricate the outside diameter of the crankshaft gear journal.
NOTE: Rear gear train engines do not have any type of keyway or timing mark on the front crankshaft gear. The
gear can be installed in any orientation.
Remove the gear from the oven.
Align the keyway of the gear with the alignment dowel pin in the crankshaft and install the gear within 30 seconds.
For front gear train engines, align the keyway of the gear with the alignment dowel pin in the crankshaft. Install the
crankshaft gear within 30 seconds of removing it from the oven.
If the gear cools and stops on the crankshaft before it is fully installed, use a driver to complete the installation.
Make sure the gear is seated against the crankshaft shoulder. Use a 0.02 mm [0.001 in] feeler gauge to check
to see if the feeler gauge can be inserted between the crankshaft gear and the shoulder on the crankshaft. If the
feeler gauge can be inserted, the crankshaft gear is not properly seated and must be removed and installed again.
