Engine Vibration Is Excessive
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C15 and C18 Engines for Caterpillar Built Machines
[RENR5033]
C15 and C18 Engines for Caterpillar Built Machines
Engine Does Not Crank
C15 and C18 Engines for Caterpillar Built Machines
Fuel Consumption Is Excessive
1.1. Probable Causes
2.1. Recommended Actions
- Inspect the vibration damper
- Engine supports
- Driven equipment
- Engine misfiring
- Running rough
Show/hide table
| Troubleshooting Test Steps | Values | Results |
|---|---|---|
1. Inspect the Vibration Damper A. Clean any debris from around the damper. Check the vibration damper for damage. B. Inspect the mounting bolts for damage and/or for wear. Refer to the Disassembly and Assembly manual. |
Damper |
Result: The vibration damper or the mounting bolts are damaged. Repair: Replace the damaged vibration damper or the damaged mounting bolts. Result: The vibration damper or the mounting bolts are not damaged. Proceed to Test Step 2. |
2. Engine Supports A. 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. B. Check the alignment of the following before operating the engine under load for any length of time: 1. Mounts 2. Coupling |
Engine Supports |
Result: The mounts and brackets are loose and/or broken. Repair: Replace the mounts and brackets that are loose and/or broken. Result: The mounts and brackets are not loose and/or broken. Proceed to Test Step 3. |
3. Driven Equipment A. Inspect the mounting bolts for the driven equipment. Inspect the alignment and the balance of the driven equipment. B. Inspect the coupling. |
Driven equipment |
Result: The driven equipment and the alignment are OK. Refer to Troubleshooting, "Engine Misfires, Runs Rough, or Is Unstable", for more troubleshooting information. Result The driven equipment and the alignment are not OK. Repair: Repair or replace the driven equipment. |
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