Pinless intake valve yokes for Mack E-Tech diesel engines.
Engine Builders: The AERA Technical Committee offers the following information concerning pinless intake valve yokes for Mack E-Tech diesel engines. Beginning March 2, 2000 (engine s/n 0D0120), pinless valve yokes p/n 891gc328 were phased into production of all E-Tech engines. The pinless yokes are used for the inlet valves only. This change went into effect
Connecting rod bolt torque specifications used in various Allis Chalmers agricultural or industrial engines
Engine Builders: In an effort to clarify the confusion about connecting rod bolt torque specifications used in various Allis Chalmers agricultural or industrial engines, the AERA Technical Committee offers the following information. This information applies to both early and late style engines, as several different hardware combinations have been used in the 201, 301 and
A revised connecting rod cap screw for 1991-
Engine Builders: The AERA Technical Committee offers the following information regarding a revised connecting rod cap screw for 1991-
The lower intake manifolds on some Ford vehicle models are not fitting correctly after machining
Engine Builders: Some AERA members have reported that the lower intake manifolds on some Ford vehicle models are not fitting correctly after machining. To reduce the likelihood of coolant contamination of engine oil, a revised, thicker intake gasket is now available for the 3.8L and 4.2L Ford car and truck engines. These models have VIN
Cylinder head service for 1998-2002 Cummins 5.9L ISB/QSB engines
Engine Builders: The AERA Technical Committee offers the following information regarding cylinder head service for 1998-2002 Cummins 5.9L ISB/QSB engines, also known as "24 valve" or "4 valves per cylinder" engines (current service information is found in Bulletin 366193, revision 01 published in February 1999). Previously published service information may be incorrect due to updated
Repair Of Worn Cam Bearing Housing Bores For Detroit Diesel 11.1l And 12.7l Diesel 60 Series Engines
Engine Builders: The AERA Technical Committee offers the following information regarding the possible repair of worn cam bearing housing bores for Detroit Diesel 11.1L and 12.7L diesel 60 Series Engines. These engines use an overhead camshaft design with seven individual location precision bearing inserts. Over time, the bearing bores may become worn oversize or out-of-round,
1997-2002 GM 4.8, 5.3, 5.7 & 6.0L VIN V, T, G & U engines
Engine Builders: The AERA Technical Committee offers the following information for 1997-2002 GM 4.8, 5.3, 5.7 & 6.0L VIN V, T, G & U engines. These engines were manufactured with two different design connecting rod bolts beginning in 1999. Either design bolt, when used in pairs and properly tightened, may be used on a single
Revised cylinder head installation procedure for 1997-2002 GM 5.7L VIN G engines
Engine Builders: The AERA Technical Committee offers the following information on a revised cylinder head installation procedure for 1997-2002 GM 5.7L VIN G engines, Figure 1. This revised procedure should be used any time the cylinder heads are being installed and supersedes information found in earlier published service manuals. Previously published technical bulletin TB 1624
Chrome Plated Intake Valve Stems For 1993-2001 Navistar Dt408, Dt466/466e And 530/530e Engines
Engine Builders: The AERA Technical Committee offers the following information on chrome plated intake valve stems for 1993-2001 Navistar DT408, DT466/466E and 530/530E engines. The revised intake valves are introduced as a product improvement for increased durability and are suggested for use any time the cylinder head is serviced. To reduce the valve stem wear
Enhance engine performance and increase durability at higher horsepower output, Detroit Diesel 11.1L and 12.7L premium engines (60-series, 1998-2002 models)
Engine Builders: To enhance engine performance and increase durability at higher horsepower output, Detroit Diesel 11.1L and 12.7L premium engines (60-series, 1998-2002 models) use a unique forged steel piston and connecting rod assembly. The premium engines can be identified with the letters "PK" in the fifth and sixth position (example: 6067PK28) of the model designation.
Improving engine balance on 1992-2001 GM 6.5L VIN 7, F, P, S and Y diesel truck engines
Engine Builders: The AERA Technical Committee offers the following information on improving engine balance on 1992-2001 GM 6.5L VIN 7, F, P, S and Y diesel truck engines. This information should be considered any time this engine is remanufactured. While some owners of these engines have accepted the original driveability condition as normal, others have
Ford 302/351 W Roller Cam
In 1994, Ford started using a roller cam in the 351W. It