K 1500 Truck 4WD V8-305 5.0L VIN M SFI (1996)
Valve Guide Seal: All Technical Service Bulletins
Valve Stem Oil Seal - Correct Installation
File In Section: 6 - Engine
Bulletin No.: 67-61-15
Date: May, 1996
SERVICE MANUAL UPDATE
Subject:
Section 6A4B, 6A5B - Engine Mechanical - Valve Stem Oil Seal Installation
Models:
1996 Chevrolet and GMC S/T, M/L, C/K, P, G Models
1996 Oldsmobile Bravada
with 4.3L, 5.0L, 5.7L Engine (VINs W, X, M, R - RPOs L35, LF6, L30, L31)
Service Manual information for installing valve stem oil seals is incorrect in 1996 model year S/T, M/L, C/K, G, and P platform service information
manuals.
The procedure below details the correct installation for the engines and model years listed. Please update your service manuals with this information. The
valve stem oil seals must be installed with Kent-Moore tool J 42073.
1.
Install valve spring compressor J 8062 onto the valve spring and compress the valve spring.
2.
Remove the valve keys.
3.
Remove the valve spring and cap.
4.
Remove the old valve stem oil seal.
5.
Clean the valve spring seat area. It must be free of any foreign material.
6.
Lubricate the valve stem oil seal and guide with clean engine oil.
7.
Install the valve stem oil seal onto the valve stem. Push seal down until the seal contacts valve guide.
Important:
The valve must be installed into the cylinder head to properly align tool J 42073 over the valve guide.
8.
Place J 42073 over the valve stem and oil seal. Tap on tool J 42073 until the tool bottoms out against the valve spring seat (Figure 1).
