864376T 3 Mercruiser ECM, Engine Control Module

Table 1
Required Tools
Tool Part Number Part Description Qty
B 125-0200 Camshaft Pilot As 2
C 125-0201 Camshaft Guide As 1
D 8T-3169 Crank Assembly 1
E 238-9586 Camshaft Drive Group 1
F 5P-3931 Anti-Seize Compound -
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: The following procedure is for installing the camshaft in the left-hand side of the engine.Note: The following Step is for 3512C, 3512E, and 3516C Engines.
Illustration 1 g01122346
Attach a suitable lifting device to rear half of the camshaft. The weight of one-half of the camshaft for 3516C Engine is approximately 47 kg (104 lb). The weight of one-half of the camshaft for 3512C and 3512E Engine is approximately 45 kg (99 lb). Install spacer (13) and the rear half of the camshaft onto the front half of the camshaft. Install bolts (14) and tighten to a torque of 55 7 N m (41 5 lb ft).Note: Ensure that the camshafts are assembled according to the marks on the ends of the camshafts. If the dowel was removed from the front half of the camshaft, install the dowel. Install the dowel to 12.0 0.5 mm (0.47 0.02 inch) from the surface of the camshaft.Note: The following Step is for 3508C Engines.
Attach a suitable lifting device to the camshaft. The weight of the camshaft for 3508C Engine is approximately 50 kg (110 lb).Note: Ensure that the camshaft is installed according to the marks on the ends of the camshaft. If the dowel was removed from the front half of the camshaft, install the dowel. Install the dowel to 12.0 0.5 mm (0.47 0.02 inch).
Illustration 2 g01123198
Install Tooling (C) on the front housing. Do not tighten the bolts on Tooling (C).Note: Tooling (C) can be installed on the flywheel housing in order to install the camshaft from the rear of the engine.
Install Tooling (B) on the ends of the camshaft. Install Tooling (D) on Tooling (B) which is installed on the front 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.
Rotate the camshaft and insert the camshaft into the engine. Position the camshaft in the engine until Tooling (B) is in the front camshaft bearing. Rotate the camshaft in order to align Tooling (C) and the camshaft bores. Tighten the bolts for Tooling (C).
Rotate the camshaft and insert the camshaft into the engine. Remove Tooling (D) from Tooling (B). Remove Tooling (B) from the camshaft. Remove Tooling (C) from the front housing.
Illustration 3 g01122334
Install thrust washer (10) and bolts (11).
Install bolts (12).
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 4 g01122583
Remove timing plate (15) from the storage position under the rear camshaft cover.
Turn the camshaft until the timing pin can be installed through the cylinder block and into the groove that is in the camshaft. Refer to Testing and Adjusting, "Camshaft Timing" for more information.
Illustration 5 g01123337
Remove bolts (17), cover (16), and plug (18) from flywheel housing (19).
Install one bolt (17) into the flywheel housing through the hole for plug (18). Use Tooling (E) and a ratchet to turn the flywheel until bolt (17) 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 6 g01123380
Use the following procedure in order to install camshaft drive gear (8).
Clean the taper of the camshaft and the tapered bore of the camshaft gear with a lint free cloth saturated with solvent to remove oil. Clean the parts again with a lint free alcohol wipe in order to remove any residue. The the alcohol wipe will dirty after cleaning the parts. Clean the parts again with a lint free alcohol wipe until no residue is left on the alcohol wipe.Note: The camshaft and the tapered bore of the camshaft gear must be clean, dry, and free of residue before assembly.
Ensure that the camshaft timing pins and the timing pin for the flywheel are installed.
Place camshaft dr