Chevrolet Silverado / GMC Sierra. Service manual — part 599

Hole
Courtesy of GENERAL MOTORS CORP.

1. Measure the distance between the center of the crows foot wrench end to the center of the

square drive hole.

Fig. 79: Measuring Length Of Torque Wrench

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Courtesy of GENERAL MOTORS CORP.

2. Measure the length of the torque wrench from the center of the square drive to the center of

the handle.

3. Divide the measurement of the crows foot length by the torque wrench length. This figure is

the percentage of additional torque, over the torque wrench setting, that will be applied to
the fitting.

4. Subtract the results of step 3 from the number 1. This figure is the percentage of the listed

torque specification that the torque wrench should be set to.

5. Multiply the results of step 4 by the listed torque setting. Refer to Fastener Tightening

Specifications . This figure is the proper setting the torque wrench should be set at when
using a crows foot in line with the torque wrench.

Example

1. Crows foot measurement = 25 mm (1.0 in)

2. Torque wrench measurement = 355 mm (14.0 in)

3. 25 mm / 355 mm (1.0 in / 14.0 in) = 0.07, or 7 %

4. 1 - 0.07 = 0.93, or 93 %

5. 0.93 x 41 N.m (30 lb ft) = 38 N.m (28 lb ft)

SERVICE PRIOR TO ASSEMBLY

Dirt will cause premature wear of the rebuilt engine. Clean all the components.

Use the proper tools to measure the components when checking for excessive wear.
Components not within the manufacturer's specification must be repaired or replaced.

When the components are reinstalled into an engine, return the components to their original
location, position, and direction.

During assembly, lubricate all the moving parts with clean engine oil (unless otherwise
specified). This will provide initial lubrication when the engine is first started.

CRANKSHAFT AND BEARING INSTALLATION

Tools Required

J 45059 Angle Meter

Installation

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 80: View Of Crankshaft Upper & Lower Bearings
Courtesy of GENERAL MOTORS CORP.

1. Install the upper crankshaft bearings into the cylinder block. The bearing halves to be

inserted into the crankshaft main bearing saddle have a wide groove and oil hole in the
center of the bearing (1).

2. Install the lower crankshaft bearings into the crankshaft bearing caps. The bearing halves to

be inserted into the crankshaft main bearing caps do NOT have an oil hole or groove in the
bearing (2).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 81: View Of View Of Thrust Bearings
Courtesy of GENERAL MOTORS CORP.

3. Install the upper thrust bearings to the cylinder block. There are two thrust bearings (1 and

3) in the cylinder block and one lower thrust bearing in the No. 5 crankshaft bearing cap
(2).

4. Lubricate the crankshaft bearing surfaces with engine oil.

5. Install the crankshaft into the cylinder block.

6. Install the No. 5 crankshaft bearing cap with the lower thrust bearing (2).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado