| Isuzu Engine >> VALVE BRIDGE CAUTIN FOR 7.8L DIESEL ENGINES |
Valve Bridge Stud Caution For
1998-2003 Isuzu 7.8L 6HK1-TC Diesel Engines
The AERA Technical Committee offers the following information regarding a caution for bridge studs on 1998-2003 Isuzu 7.8L 6HK1-TC diesel engines. It has been reported valve bridge studs have moved during engine operation and cylinder head service work.
Damage will result to either the rocker arm or valve rocker bridge if the stud installed height is higher than 1.496" (38.000 mm). The correct installed bridge stud height is listed as 1.457-1.496" (37.000-38.000 mm). These studs are pressed into the cylinder head casting and use of special tool # J43268 will locate the studs to the correct height.
This engine built by Isuzu is used in the following vehicle models sold by Isuzu, Chevrolet Trucks and GMC Trucks.
1999-2003 Chevrolet & GMC F-Model (T-Series) Medium Duty Tilt Cab Models.
2000-2003 Chevrolet & GMC WT 5500 Medium Duty Tilt Cab Models.
2003 Chevrolet & GMC C6500-C8500 Series Models (Some Topkick & Kodiak).
1998-2002 Isuzu FSR/FTR/FVR Commercial Vehicles.
2000-2003 Isuzu, Some FRR Commercial Vehicles.
The AERA Technical Committee
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