825133A 2 Mercury COMPLETE GEAR HOUSING

Table 1
Required Tools
Tool Part Number Part Description Qty
A 125-0201 Camshaft Guide As 1
B 8T-3168 Camshaft Pilot As 2
4J-7945 Bolt 2
C 8T-3169 Crank As 1
D 5R-7425 Barring Gp 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: The camshaft is in two pieces. Ensure that the camshafts are assembled and installed according to the marks on the ends of the camshafts.
Illustration 1 g00579257
Install Tooling (A) on the flywheel housing. Do not tighten the bolts on Tooling (A).
Attach a suitable lifting device to the front half of the camshaft. The weight of one-half of the camshaft is approximately 74 kg (163 lb).
Install Tooling (B) 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.
Position the front half of camshaft (12) in the engine until Tooling (B) is in the first camshaft bearing.
Rotate camshaft (12) and tighten the bolts for Tooling (A).
Rotate camshaft (12) and insert the camshaft until the camshaft is slightly protruding from Tooling (A).
Illustration 2 g00579259
Illustration 3 g00579260
If the dowel was removed from the front half of camshaft (12), install the dowel. Install the dowel to 22.0 0.5 mm (0.87 0.02 inch) from the surface of the camshaft.
Fasten a hoist to the rear half of camshaft (13). The weight of one-half of the camshaft is approximately 74 kg (163 lb). Install spacer (15) and the rear half of camshaft (13) onto the front half of camshaft (12). Install bolts (14) and tighten to a torque of 55 7 N m (41 5 lb ft).
Install Tooling (B) and Tooling (C) on the end of camshaft (13).
Rotate camshaft (13) and insert the camshaft into the engine.
Remove all tools. Repeat Steps 1 through 11 for the camshaft on the opposite side of the engine. Then go to Step 13.
Illustration 4 g00579144
Install thrust washers (10) and bolts (9) that fasten the camshaft to the engine.
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 5 g00579261
Remove timing pin (16) from the storage position on the side of the engine.
Turn the camshaft until timing pin (16) can be installed through the cylinder block and into groove (17) that is in the camshaft.
Repeat Steps 1 and 15 for the camshaft on the opposite side of the engine.
Illustration 6 g00579262
Remove bolts (19), cover (18), and plug (20).
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Install one bolt (19) into the flywheel housing through the hole for plug (20). Use Tooling (D) and a ratchet to turn the flywheel until bolt (19) can be installed through the hole and into the flywheel. This will position the No. 1 cylinder at the top center. Refer to the Service Manual, "Testing and Adjusting Module" for more information.
Illustration 8 g00579264