Yukon 4WD V8-6.5L DSL Turbo VIN S (1997)
Undersized refers to the crankshaft diameter. For service purposes, bearing size combinations provide the following clearances (See Figure 2).
Crankshaft bearing numbers 1, 2, 3 and 4: 0.045 - 0.083 mm (0.0018 - 0.0033 in.).
Crankshaft bearing number 5: 0.055 - 0.093 mm (0.0022 - 0.00 in.).
Important:
The upper crankshaft bearing inserts must have holes for the piston oil spray nozzles, or damage to the engine could result. All engines were
assembled with three-hole upper crankshaft bearing inserts in positions 2, 3 and 4, and with two-hole upper crankshaft bearing inserts in positions 1
and 5. Replace the upper crankshaft bearing inserts with the same type as originally installed.
1.
Install the upper crankshaft bearing inserts to the block.
2.
Install the lower crankshaft bearing inserts to the crankshaft bearing caps.
3.
Apply engine oil to the crankshaft bearing inner surfaces (See Figure 3).
