10/1/2004
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Changes to the timing chain and oiling nozzle on 2000-'03 Saturn 2.2L VIN F engines
Engine Builders: The AERA Technical Committee offers the following information regarding changes to the timing chain and oiling nozzle on 2000-'03 Saturn 2.2L VIN F engines. All GM timing chain kits available through GM service have a revised nozzle included in the kit.
The revised nozzle has higher flow rate characteristics that will increase oil flow to the timing chain under low rpm operating conditions. It is important to replace the oil nozzle when replacing the timing chain.
Prior edition service manuals referred to the timing chain index links as being silver or copper colored. With the implementation of the newer design chain and oiler assembly, the index link colors have been changed.
Engine Builders: The AERA Technical Committee offers the following information regarding a cylinder head bolt caution on 2001-'02 GM 2.2L VIN F engines. Apparently, previous Saturn service manuals have the incorrect torque listed.
If the published torque is used, cylinder head bolt breakage may occur. The previously published torque was listed with an additional 185° of torque. The correct torque for this engine should be 22 ft.lbs. + 155°. Any time the cylinder head is removed, the cylinder head bolts must be replaced. Follow the torque sequence provided in Fig. 1.
Engine Builders: The AERA Technical Committee offers the following information regarding a revised valve lash adjustment on 2001-2003 Hyundai 2.0L G4GF VIN F engines. Prior to 2001, these engines used a non-adjustable hydraulic lash compensator within the valve train. The current, revised, cam follower (non-hydraulic adjuster) requires an adjustment inspection every 60,000 miles or 48 months. The 2004 manuals have this updated information.
Valve lash adjustment should be made with a cold engine at 59°-77° F. The "cold" valve lash for intake valves is .007-.009" (.178-.287 mm), while exhaust valve is .010-.012" (.254-.305 mm). If the correct valve lash cannot be set with the original hardened shims as shown in Figure 2, obtain a different thickness shim until the correct lash is present.
During disassembly of the camshafts and lash adjusters, mark their location for proper installation during re-assembly. During cylinder head repairs, such as grinding of the valves and seats, proper stem heights should be maintained. The valve stem height measurements for both intake and exhaust valves is 1.9200-1.9500" (48.768-49.53 mm).