Chevrolet Silverado / GMC Sierra. Service manual — part 167

Fig. 556: Compressing Valve Springs
Courtesy of GENERAL MOTORS CORP.

CAUTION: Compressed valve springs have high tension against the

valve spring compressor. Valve springs that are not
properly compressed by or released from the valve spring
compressor can be ejected from the valve spring
compressor with intense force. Use care when
compressing or releasing the valve spring with the valve

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

8. Use the J 8062 to compress the valve spring. See Special Tools.

9. Install the valve stem O-ring seal.

10. Install the valve stem keys.

1. Use grease to hold the valve stem keys in place while disconnecting the J 8062 . See

Special Tools.

2. Tap the end of the valve stem with a plastic-faced hammer to seat the valve stem keys.

3. Inspect the valve stem keys to ensure that they are seated in the upper groove of the

valve stem.

OIL PUMP DISASSEMBLE

spring compressor and when removing or installing the
valve stem keys. Failing to use care may cause personal
injury.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 557: View Of Oil Pump Driveshaft & Oil Pump Driveshaft Retainer
Courtesy of GENERAL MOTORS CORP.

1. Remove the oil pump driveshaft and oil pump driveshaft retainer.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 558: View Of Oil Pump Pipe & Screen
Courtesy of GENERAL MOTORS CORP.

2. Remove the oil pump pipe, if necessary. The oil pump pipe has a press fit into the oil pump

cover.

IMPORTANT: Do not remove the oil pump screen from the pipe. The pipe

and oil pump screen are serviced as a complete assembly.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado