Service Manual, General Motors 4.3L Engine (TP ... - Kohler Power
Service Manual, General Motors 4.3L Engine (TP ... - Kohler Power
Service Manual, General Motors 4.3L Engine (TP ... - Kohler Power
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6-66 Marine/Industrial <strong>4.3L</strong> <strong>Engine</strong><br />
334378<br />
<strong>Engine</strong> Block Clean and Inspect<br />
Tools Required<br />
J 8087 Cylinder Bore Gauge<br />
Caution: Refer to Safety Glasses Caution in Cautions and<br />
Notices.<br />
1. Clean all the remaining sealing or gasket material from the<br />
sealing surfaces.<br />
2. Clean the engine block with cleaning solvent.<br />
3. Flush the engine block with clean water or steam.<br />
4. Clean the cylinder bores.<br />
5. Clean the oil galleries and the oil passages.<br />
6. Clean the scale and the deposits from the coolant<br />
passages.<br />
Notice: Clean all debris, dirt and coolant from the engine block<br />
cylinder head bolt holes. Failure to remove all foreign material may<br />
result in damaged threads, improperly tightened fasteners or<br />
damage to the components.<br />
7. Clean the engine block cylinder head bolt holes.<br />
8. After cleaning the engine block, spray or wipe the cylinder<br />
bores and the machined surfaces with clean engine oil.<br />
9. Inspect the following areas:<br />
• Coolant jackets (1) for cracks<br />
• Cylinder bores (2) for scratches or gouging<br />
• Valve lifter bores (3) for excessive scoring or wear<br />
• Threaded holes (4) for damage<br />
• Crankshaft bearing webs (5) for cracks<br />
• Crankshaft bearing caps (6) and the crankshaft bearing<br />
bores (7) for damage<br />
- The crankshaft bearing bores should be round and<br />
uniform when measuring the inside diameter (ID).<br />
- The surface where the crankshaft bearings contact the<br />
crankshaft bearing bore should be smooth.<br />
- If a crankshaft bearing cap is damaged and requires<br />
replacement, replace the crankshaft bearing cap first,<br />
then rebore the engine block crankshaft bearing bores<br />
and check for proper alignment. Finally, check the<br />
crankshaft fro the proper clearances.<br />
• <strong>Engine</strong> block core hole plug bores (8) for damage<br />
• <strong>Engine</strong> block (9) fro cracks or damage<br />
• <strong>Engine</strong> mount bosses (10) for damage<br />
2000 Marine/Industrial