STUD 3S5123 - Caterpillar

Illustration 6 g06059235
Remove bolts (15). Separate the camshafts and remove spacer (16).
Remove the dowel from the front of the camshaft if necessary.
Repeat Steps 8 through Step 14 for the other camshaft.Installation Procedure
Note: Ensure that the camshafts are assembled and installed according to the marks on the ends of the camshafts.
Install Tooling (D) on the flywheel housing. Do not tighten the bolts on Tooling (D).
Install Tooling (C) on the end of the front half of the camshaft.
Ensure that the camshaft and the camshaft bearings are clean. Place clean engine oil on the lobes and the journals of the camshaft. Also place clean engine oil on the camshaft bearings.
Attach a suitable lifting device to the camshaft. The weight of one-half of the camshaft is approximately 40 kg (88 lb).
Position the front half of camshaft (13) in the engine until Tooling (C) is in the first camshaft bearing.
Rotate camshaft (13) and tighten the bolts for Tooling (D).
Rotate camshaft (13) and insert the camshaft until the camshaft is slightly protruding from Tooling (D).
If the dowel was removed from the front half of camshaft (13), install the dowel. Install the dowel to 22 0.5 mm (0.9 0.02 inch) from the surface of the camshaft.
Illustration 7 g06059235
Attach a suitable lifting device to rear half of camshaft (13). The weight of one-half of the camshaft is approximately 36 kg (80 lb). Install spacer (16) and the rear half of camshaft (13) onto the front half of camshaft (13). Install bolts (15) and tighten to a torque of 55 7 N m (41 5 lb ft).
Install Tooling (C) and Tooling (E) on the rear half of camshaft (13).
Rotate the rear half of camshaft (13) and insert the camshaft into the engine.
Remove all Tooling. Repeat Step 1 through Step11 for camshaft (14).
Illustration 8 g06058952
Install cam plates (12) and bolts (11).
If the camshaft is out of time more than 18 degrees (approximately 1/2 of the timing pin is out of the groove), the valves can make contact with the pistons. This will cause damage to the engine. Refer to Testing and Adjusting, "Camshaft Timing" for more information.
Illustration 9 g06059368
Remove timing pin (17) from the storage position on the side of the engine.
Turn the camshaft until timing pin (17) can be installed through the cylinder block and into the groove that is in the camshaft.
Repeat Steps 14 and 15 for the camshaft on the opposite side.
Illustration 10 g06059417
Remove bolts (18) and cover (19).
Illustration 11 g06059451
Install one bolt (18) into the flywheel housing. Use Tooling (A) and a ratchet to turn the flywheel until bolt (18) can be installed through the hole and into the flywheel. Doing so will position the No. 1 cylinder at the top center. Refer to Testing and Adjusting, "Finding the Top Center Position for the No. 1 Piston" for more information.
Illustration 12 g06058772
Use the following procedure to install camshaft drive gear (9) and camshaft drive gear (6).
Clean the taper of the camshaft and the tapered bore of the camshaft drive gear with a lint free cloth saturated with