LS7 Corvette Mechanical Repair Specs (PDF) - Bakes Online

Print Preview Version 8.0 PubTeX output 2006.06.15:1036 File: C:\DOCUME~1\PCOMPO~1.IGS\LOCALS~1\Temp\.aptcache\2006LS7/tfa01804.dvi User: PComposer Page: 492006 Y Car GMX245 Corvette7.0L (LS7) Engine MechanicalStep Action Yes NoNotice: Refer to Belt Dressing Notice in Cautions and Notices.DEFINITION:• A low pitch tapping, knocking, or thumping noise heard at or just above idle• Heard once per revolution of the drive belts or a pulleys• Rumbling may be caused from:– Pilling, the accumulation of rubber dust that forms small balls (pills) or strings in the drive belts pulley groove– The separation of the drive belts– A damaged drive belts1Did you review the Symptoms – Engine Mechanical diagnosticinformation, and perform the necessary inspections? Go to Step 2Go to Symptoms -Engine Mechanical2Verify that there is a rumbling noise.Does the engine make the rumbling noise? Go to Step 3 Go to Diagnostic Aids31. Remove the drive belts. Refer to Drive Belt Replacement -Accessory or Drive Belt Replacement - Air Conditioning .2. Operate the engine for no longer than 30–40 seconds.Does the rumbling noise still exist?Go to Engine Noiseon Start-Up, but OnlyLasting a Few Seconds, Upper EngineNoise, Regardlessof Engine Speed,orLower EngineNoise, Regardless ofEngine Speed Go to Step 445678Inspect the drive belts for damage, separation, or sections ofmissing ribs.Were any of these conditions found? Go to Step 7 Go to Step 5Inspect for severe pilling of more than 1/3 of the drive belt groovedepth.Do the drive belt grooves have pilling? Go to Step 6 Go to Step 71. Clean the drive belt pulleys using a suitable wire brush.2. Reinstall the drive belt. Refer to Drive Belt Replacement -Accessory or Drive Belt Replacement - Air Conditioning .Did you complete the repair? Go to Step 8 Go to Step 7Install a new drive belt. Refer to Drive Belt Replacement -Accessory or Drive Belt Replacement - Air Conditioning .Did you complete the replacement? Go to Step 8 —1. Clear any codes.2. Run the engine in order to verify the repair.Does the rumbling noise still exist? — System OKDiagnostic Information and Procedures1399818Drive Belt Vibration DiagnosisDrive Belt:Vibration Diagnosis:Engine Mechanical - 4.8L, 5.3L, and 6.0LDiagnostic Aids49 of 272