Engine - Revised Connecting Rod Bolt Torque
TSB # SB07-01-S005Issue Date: MARCH 2007
Subject:
Revised Connecting Rod Bolt Torque For 5.3I V8 Engine Service Manual Revision
Affected Vehicles:
2003-2006 Isuzu Ascender (US) with 5.3L Engine
Service Information
This bulletin is being issued to revise the Connecting Rod Bolt Torque Specs procedure in the Service Manual.
A new connecting rod bolt torque specification was introduced to the GEN III and GEN IV Vortec(TM) small block V8 engines. The connecting rod bolts should continue to be tightened using two passes. The second pass value has been increased from 75 degrees to 85 degrees.
Install the connecting rod bolts and tighten. Refer to Piston, Connecting Rod, and Bearing Installation in the Service Manual for further information.
Tighten
^ Tighten the connecting rod bolts a first pass to 20 Nm (15 lb ft).
^ Tighten the connecting rod bolts a final pass to 85 degrees using the J 45059 Angle Meter.
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