GMC Powertrain 4.3 L, Руководство по обслуживанию, Страница: 91 / 196

Engine Marine/Industrial 4.3L 6-81
2000 Marine/Industrial
334342
353091
4. Install the crankshaft bearings into the crankshaft bearing
caps.
5. Install the crankshaft bearing caps in the original positions
and with the arrow on the crankshaft bearing caps in the
direction of the front of the engine block.
Notice: Refer to Fastener Notice in Cautions and Notices.
6. Install the crankshaft bearing cap bolts.
Tighten
6.1. Tighten the crankshaft bearing cap bolts on the first
pass to 20 N•m (15 lb ft).
6.2. Tighten the crankshaft bearing cap bolts on the final
pass an additional 73 degrees using the J 36660.
7. Measure the crankshaft bearing inside diameter (ID) at the
top and the bottom using an inside micrometer.
8. In order to determine the crankshaft bearing clearance,
subtract the journal diameter from the crankshaft bearing ID.
9. Compare the crankshaft bearing clearance to the
specifications. Refer to Engine Mechanical Specifications.
10. If the crankshaft bearing clearances exceeds specifications,
install the new crankshaft bearings as follows:
10.1. Measure the crankshaft bearing inside diameter (ID)
at the top and the bottom using an inside micrometer.
10.2. Compare the crankshaft bearing clearance to the
specifications. Refer to
Engine Mechanical
Specifications.
11. Replace or repair the crankshaft if the proper clearances
cannot be obtained.