32561 Mercruiser PLUG, PIPE-EXAHUST MANIFOLD (1/4-18)

Table 1
Required Tools
Tool Part Number Part Description Qty
A 8T-5096 Dial Indicator Gp 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g01619992Note: The assembly of the crankshaft rear seal is nonserviceable. If the assembly of the crankshaft rear seal is removed, the assembly must be replaced.
Remove bolts (1) from the assembly of crankshaft rear seal (2).
Remove bolts (3) from the assembly of the crankshaft rear seal.
Remove the assembly of crankshaft rear seal (2) from the cylinder block. Discard the assembly of crankshaft rear seal (2). Note: It is not necessary to remove the adapter for the engine oil pan to remove the crankshaft rear seal.Installation Procedure With Oil Pan in Position
Note: The crankshaft rear seal and the housing are manufactured as one assembly.Note: Do not lubricate the crankshaft rear seal or the crankshaft flange. The crankshaft rear seal must be installed dry.
Illustration 2 g01620015
Ensure that crankshaft flange (1) is clean, dry, and free from damage.
Ensure that the gasket surface of the cylinder block is clean and dry. Ensure that the gasket surface of isolating frame (7) is clean and dry.
Ensure that plastic sleeve (3) is squarely installed within new crankshaft rear seal (2). Note: The plastic sleeve is included to protect the lip of the seal as the crankshaft rear seal is pushed over crankshaft flange (1). Do not attempt to install a crankshaft rear seal without the plastic sleeve.
Illustration 3 g01337513
Typical example
Place the assembly of the crankshaft rear seal over crankshaft flange (1). Align dowel (5) with the slot in crankshaft rear seal (2).
Ensure that plastic sleeve (3) is engaged on crankshaft flange (1). Push crankshaft rear seal (2) squarely onto the crankshaft. Ensure that the crankshaft rear seal is seated against the cylinder block. During this process, plastic sleeve (3) will be forced out of the crankshaft rear seal. Discard the plastic sleeve. Note: Ensure that dowel (5) is engaged in the slot in the crankshaft rear seal.
Install two outer bolts (6) at the base of crankshaft rear seal (2). Tighten bolts (6) to a torque of 15 N m (11 lb ft).
Install two bolts (4) to crankshaft rear seal (2) at Position (X). Tighten bolts (4) to a torque of 22 N m (16 lb ft).
Loosen bolts (6) by one complete turn.
Illustration 4 g01784513
Tightening sequence
Install remaining bolts (4). Tighten bolts (4) to a torque of 22 N m (16 lb ft) in the sequence that is shown in Illustration 4.
Install remaining bolts (6). Tighten all the bolts to a torque of 22 N m (16 lb ft) in the sequence that is shown in Illustration 4.
Use Tooling (A) to check the concentricity between the crankshaft flange and the outside diameter of the crankshaft rear seal. Refer to Specifications, "Crankshaft Seals" for further information. End By:
Install the flywheel housing. Installation Procedure Without Isolating Frame for the Oil Pan
Table 2
Required Tools
Tool Part Number Part Description Qty
A - Alignment Tool 1
- Bolts (M8 by 20 mm) 4
B 8T-5096 Dial Indicator Gp 1 Note: The crankshaft rear seal and the housing are manufactured as one assembly.Note: Do not lubricate the crankshaft rear seal or the crankshaft flange. The crankshaft rear seal must be installed dry.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.