Q:I’ve noticed the main bearing bores on some Cat diesels seem to be bigger than others. Can they still be rebuilt? A:The AERA Technical Committee offers the following information regarding a main bearing housing bore caution for 1997-2007 Caterpillar diesel engines. Oversize main bearing bores have been reported during engine...
Q: We’ve had complaints of recurring oil leaks around the cylinder head on some Cummins diesel engines. Any suggestions? A: The AERA Technical Committee offers the following information regarding revised studded cylinder head bolts for Cummins 10.0L and 11.0L, L10 and M11 diesel engines. This information should be used any...
Approximately how much can you grind off a crankshaft on a DDC diesel engine? The AERA Technical Committee offers the following information regarding crankshaft remanufacturing specifications for 1986-2007 DDC 11.1, 12.7 and 14.0L diesel engines.The crankshaft for the above mentioned 60 Series engines can be remanufactured during the engine building...
Is it okay to reuse connecting rod bolts on some late model GM engines? The AERA Technical Committee offers the following information regarding revised connecting rod bolt torque for 1997-2007 GM 4.8, 5.3, 5.7 and 6.0L engines. This information applies to all current GEN III and IV design small block...
Q: We’ve had complaints of oil leaking from the rear cover area on some late model GM engines. Any ideas? A: The AERA Technical Committee offers the following information regarding a rear engine oil leak on 2003-’06 GM 4.8, 5.3, 5.7, 6.0 and 7.0L engines. Upon initial inspection, this...
The AERA Technical Committee offers the following information regarding a cylinder head bolt caution and installation for 2001-2002 Kia 1.5L DOHC engines. Information published in the 2001 and 2002 service manuals for this engine is inaccurate. The 2001 Rio service manual incorrectly specifies the cylinder head bolt torque values as...
Can you tell me if there is an updated exhaust manifold torque specification for GEN III engines? The AERA Technical Com-mittee offers the following information regarding exhaust manifold bolt and torque update on 1998-2003 GEN III 4.8L, 5.3L, 5.7L and 6.0L engines. A new exhaust manifold bolt and torque specification...
What is the proper main bearing installation procedure for Chrysler Hemi engines? The AERA Technical Committee offers the following information regarding crankshaft main bearing installation procedures for 2003-’06 DaimlerChrysler 5.7L and 6.1L Hemi engines. This procedure is for crankshafts previously removed from the cylinder block. It is important to first...
Q. While working on a 2004 Mitsubishi 2.4L G69M engine, I got confused about the correct valve lash specs. Can you explain? A. The AERA Technical Committee says Mitsubishi’s published information seems to have listed incomplete specifications as two different camshaft profiles were use. The following information regarding the correct...
The AERA Technical Committee offers the following information regarding a cylinder boring caution for 1999-2006 GM 6.0L VIN U engines. These engines are the newest version of the small block series and have been commonly called Gen III engines. It has been reported that cylinder bore distortion is prevalent in...
We’ve had customer complaints about recurring MILs (malfunctioning indicator light) on some Chrysler 3.2 and 3.5L engines. Any idea what’s going on? The AERA Technical Committee offers the following information regarding a revised valve spring for 1998-2004 Chrysler 3.2 and 3.5L VIN J, G, K, M & V engines. This...
Q: Are the cracked exhaust seats in the Cummins 5.9L diesel engine found in the Ram pickup a cause for concern? A: The AERA Technical Committee says cracked exhaust seats on 1998-2006 Cummins/Chrysler 5.9L diesel engines have been reported by other AERA members as well. The 24 valve engines with...
We’ve experienced broken head bolts on some late model GM engines. Any solutions? The AERA Technical Committee offers the following information on a recently available bolt extractor kit for 2002-2006 GM 2.8, 3.5 and 4.2L VIN 8, 6 and S engines. This L-style engine family features an aluminum block and...
The AERA Technical Committee offers the following information regarding cylinder block deck cracks on Caterpillar 3208 engines. This information provided by Caterpillar gives the correct procedures to visually inspect a cylinder block for cracks between the water port and the cylinder head bolt hole. A 3208 engine cylinder block that...
Q: I’ve had difficulty getting the main bearing clearances correct on some Ford 2.5L engines. Do you know of any updates? A: The AERA Technical Committee offers the following information regarding the main bearing bore for 1993-2002 Ford 2.5L VIN B and KL engines. This engine is made by Mazda...
Q: I have experienced problems with blowing oil filter seals off some 4.2L Ford engines. Any solutions? A: The AERA Technical Committee offers the following information regarding high oil pressure on 1997-2004 Ford 4.2L VIN 2 engines. This condition occurs immediately after engine front cover/oil pump replacement. In some instances,...
I’ve noticed the crankshaft pulley on some Mazda engines don’t have keys. What is the proper installation procedure? The AERA Technical Committee offers the following information regarding crankshaft pulley replacement for 2001-2005 Mazda 2.0L and 2.3L engines. The crankshaft pulley is not keyed to the crankshaft on these engines. If...
I’ve had complaints of broken exhaust manifold bolts on some 5.4L Ford engines. Is there an upgrade available? The AERA Technical Committee offers the following information regarding broken exhaust manifold bolts on 1999-2005 Ford 5.4L VIN L engines. This information applies to non-supercharged Ford truck engines. Generally, this condition is...
The AERA Technical Committee says the following information should be considered any time a cylinder head is installed on 2001-2005 GM 8.1L VIN E and G engines. Three different length mounting bolts are used to secure the cylinder heads for these engines as shown in Figure 1. These bolts are...
