| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 4C-9832 | Engine Roll-Over Stand | 1 |
| B | 8T-5096 | Dial Indicator Group | 1 |
| NOTICE |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
- If crankshaft gear (1) was removed, install the gear on crankshaft (2).
- Check the clearance of the main bearings. For the correct procedure, see this Disassembly and Assembly, "Bearing Clearance - Check" topic.
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Illustration 2 g00577547 Note: The upper halves of the main bearings have an oil hole in the center.
- Install the upper halves of main bearings (3) in the cylinder block. Coat the bearings with clean engine oil.
- Install the upper halves of connecting rod bearings (4) in the connecting rod assemblies. Coat the bearings with clean engine oil.
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Illustration 3 g00577548 Typical example Note: Ensure that the word "FRONT" that is on the end of the crankshaft is toward the front of the engine.
Note: The weight of the crankshaft is approximately
590 kg (1300 lb) . - Attach a suitable lifting device to crankshaft (2) and position the crankshaft in the cylinder block.
- Ensure that the lower halves of the main bearings are in position in the main bearing caps. Coat the bearings with clean engine oil.
Note: The main bearing caps must be installed with the word "FRONT" and the part number toward the front of the engine. Each main bearing cap has a number on the bottom surface and each main bearing must be installed in the corresponding position in the cylinder block.
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Illustration 4 g00614061 Bolt tightening sequence for main bearing caps
(X) Front of engine - Coat the threads of the bolts for the main bearing caps with clean SAE 30 engine oil. Except for the center main bearing cap, place the main bearing caps into position. Install the bolts and washers.
Tighten the bolts according to the sequence that is shown in Illustration 4. Tighten the bolts to a torque of
190 ± 14 N·m (140 ± 10 lb ft) . Then tighten the bolts for an additional 180 ± 5 degrees (1/2 turn).Show/hide table
Illustration 5 g00577577 - Place clean engine oil on thrust plates (9). Install thrust plates (9).
- Install the center main bearing. Use the tightening procedure that is in Step 7.
- Use Tool (B) to measure the end play of the crankshaft. The end play must not exceed
0.17 to 0.63 mm (0.007 to 0.025 inch) . - Make sure that the upper halves of the bearings are in position on the connecting rods. Make sure that the lower halves of the bearings are in position on the connecting rod caps.
- Check the clearance of the connecting rod bearings. For the correct procedure, see Disassembly and Assembly, "Bearing Clearance - Check".
- Position one connecting rod onto a journal of the crankshaft.
Note: The number that is on the side of the connecting rod caps must be installed next to the corresponding number that is on the side of the connecting rod.
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Illustration 6 g00577579 Show/hide table
Illustration 7 g00577581 Bolt tightening sequence for the connecting rod caps - Place 334-0519 Grease on the bolt threads, shanks, and seats.
- Place connecting rod cap (10) into position. Install the bolts. Use the following procedure to tighten the bolts:
- Tighten bolts (11) and (12) to a torque of
90 ± 5 N·m (65 ± 4 lb ft) . - Tighten bolts (13) and (14) to a torque of
90 ± 5 N·m (65 ± 4 lb ft) . - Tighten bolts (11) and (12) again to a torque of
90 ± 5 N·m (65 ± 4 lb ft) . - Tighten bolts (13) and (14) again to a torque of
90 ± 5 N·m (65 ± 4 lb ft) . - Tighten each bolt for an additional 90 ± 5 degrees (1/4 turn). An impact wrench may be used.
- Tighten bolts (11) and (12) to a torque of
- After measuring the clearance of the connecting rod bearing, coat the bearings with clean engine oil. Use the same procedure to install the remaining connecting rod caps.
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NOTICE Each counterweight is numbered and must be installed in the same position as the corresponding number on the crankshaft mounting pad in order to prevent damage to the crankshaft.
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Illustration 8 g00577584 - Install counterweights (15). Use the correct tightening procedure for the specific engine model:
- Ensure that the dowels are in the correct position and install the counterweights on the crankshaft.
- Apply 334-0519 Grease to the bolt threads, shanks, and seats.
- Tighten the bolts evenly to a torque of
70 ± 5 N·m (50 ± 4 lb ft) . - Tighten the bolts for an additional 120 ± 5 degrees (1/3 turn).
Note: The weight of the engine is approximately
6123 kg (13,500 lb) . - Use Tool (A) in order to turn the engine to a vertical position.
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| Illustration 1 | g00577546 |
Note: For more information on the crankshaft, see the Service Manual, "Specifications" module.
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- Install the piston cooling jets.
- Install the balancer gear on the rear gear group.
- Install the front housing.
- Install the rocker shaft assemblies and the push rods.