89984 Mercury IMPELLER, WATER PUMP

Table 1
Required Tools
Tool Part Number Part Description Qty
A 1U-8221 Lifting Sling 2
B - Dial Indicator 1
- Magnetic Base and Stand 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Clean the crankshaft and inspect the crankshaft for wear and damage. Refer to Specifications, "Crankshaft" for more information. If necessary, replace the crankshaft or recondition the crankshaft.
Illustration 1 g03008302
If necessary, install a new crankshaft timing ring (1). Refer to Disassembly and Assembly, "Crankshaft Timing Ring - Remove and Install" for the correct procedure.
Ensure that parent bores for bearing shells in the cylinder block are clean. Ensure that the threads for the main bearing bolts in the cylinder block are clean and free from damage.
Clean the main bearing shells and the thrust washers. Inspect the main bearing shells and the thrust washers for wear and damage. If necessary, replace the main bearing shells and the thrust washers. Note: If the main bearing shells are replaced, check whether oversize main bearing shells were previously installed. If the thrust washers are replaced, check whether oversize thrust washers were previously installed.
Install upper main bearing shells to the cylinder block. Refer to Disassembly and Assembly, "Crankshaft Main Bearings - Remove and Install" for the correct procedure. Note: The upper main bearing shells have a groove and an oil hole.
Lubricate upper main bearing shells with clean engine oil.
Attach Tooling (A) and a suitable lifting device to crankshaft (2). Lift the crankshaft into the cylinder block. The weight of the crankshaft is approximately 35 kg (77 lb). Note: Do not damage any of the finished surfaces on the crankshaft. Do not damage the main bearing shells.
Lubricate lower main bearing shells and lubricate the journals of the crankshaft with clean engine oil. Install lower main bearing caps. Refer to Disassembly and Assembly, "Crankshaft Main Bearings - Remove and Install" for the correct procedure. Note: The lower main bearing shells are plain bearings that do not have an oil hole.
Rotate the crankshaft in order to ensure that there is no binding.
Check the crankshaft end play. Push the crankshaft toward the front of the engine. Install Tooling (B) to the cylinder block and the rear face of the crankshaft. Push the crankshaft toward the rear of the engine. Use Tooling (B) to measure the crankshaft end play. Refer to Specifications, "Crankshaft" for the correct information.
If necessary, install the pistons and connecting rods. Refer to Disassembly and Assembly, "Pistons and Connecting Rods - Install" for the correct procedure.
If the crankshaft has not been replaced or the crankshaft has not been reconditioned, install the connecting rod bearings. Refer to Disassembly and Assembly, "Connecting Rod Bearings - Install" for the correct procedure. End By:
If necessary, install the power take-off drive. Refer to Disassembly and Assembly, "Power Take-Off Drive - Remove and Install" for the correct procedure.
If necessary, install the balancer. Refer to Disassembly and Assembly, "Balancer - Install" for the correct procedure.
Install the engine oil suction pipe. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove and Install" for the correct procedure.
If necessary, install the cylinder head. Refer to Disassembly and Assembly, "Cylinder head - Install" for the correct procedure.
Install the flywheel housing. Refer to Disassembly and Assembly, "Flywheel Housing - Remove and Install" for the correct procedure.
Install the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Install" for the correct procedure.