- Engine: All 3500 Engines
Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.
Problem
Caterpillar is requesting information related to recent 3500 head bolt failures that might otherwise go unreported.
Resolution
Please review the survey questions in 1 and 2. Determine if sufficient documentation exist to generate a Send it Back Request (SIB).
| Site Details | |
| Field Contact | |
| Site Location | |
| Site Name | |
| Machine / Engine Details | |
| Machine Serial Number | |
| Engine Hours | |
| Engine Serial Number | |
| Engine Build Type | |
| Failure Details | |
| Failure Date | |
| Gasket Design | |
| Cylinder Number | |
| Bolt Location | |
| Additional Details for Dealer Built Engines | |
| Does the Dealer track head bolt usage? | |
| How many uses on the failed bolt? | |
| Type of lubricant used at assembly? | |
| Types of solvents and cleaning methods? | |
| Any leaks at the head / block joint prior to failure? | |
| Does the Dealer retorque head bolts in the field? | |
| What torque sequence (torque turn vs. torque) and values were used? | |
| If the engine is cleaned in the field, what is the cleaning method? | |
| Comments | |
Note: Bolt location and identification varies between gasket designs. Refer to Illustrations 1 for correct cylinder head torque procedure.
 | |
| Illustration 1 | g03725518 |
(1) Typical cylinder head torque procedure with the 110-6991 Cylinder Head Gasket (Cellulose) (2) Typical cylinder head torque procedure with the 362-8264 Cylinder Head Gasket (MLS) | |