TANK GP-HYDRAULIC 4681501 - Caterpillar

Probable Causes
Vibration damper
Engine supports
Driven equipment (if applicable)
Engine misfiring or running roughRecommended Actions
Vibration Damper
Check the vibration damper for damage. Install a new vibration damper, if necessary. Inspect the mounting bolts for damage and/or for wear. Replace any damaged bolts. Refer to the Disassembly and Assembly manual.Engine Supports
Inspect the mounts and the brackets while you run the engine through the speed range. Look for mounts and brackets that are loose and/or broken. Tighten all of the mounting bolts. If necessary, replace any damaged components. Check the alignment of the following before operating the engine under load for any length of time:
Mounts
Coupling
Crankshaft deflectionDriven Equipment (if applicable)
Inspect the mounting bolts for the driven equipment. Inspect the alignment and the balance of the driven equipment. Inspect the coupling. If necessary, disconnect the driven equipment and test the engine.Engine Misfiring or Running Rough
Refer to Troubleshooting, "Engine Misfires, Runs Rough or Is Unstable".