| Reports from the field of oil and coolant leaks resulted in the following revisions to the gasket: |
| Coining of the steel portion of the gasket was made wider and thicker to distribute the loading, which had caused some of the old gaskets to split. |
| The seal for a capscrew hole that is inside the housing (always nearest the intake valves) was changed to a metal washer that is bonded with an elastomer to the steel portion of the gasket. The previous version had only the elastomer. |
| The two capscrew holes nearest the water passage were changed to add more steel so that approximately half of the seal circumference is steel and half is elastomer. |
| When installing the gasket, make certain that all sealing surfaces are aligned properly, particularly around the large water transfer hole. This should be done by looking at the gasket from the side/edge before installation. If the gasket is not flat (i.e., has 'twist' in it) or is distorted, do not use it. Also, check the gasket, once it has been installed, to make certain that all of the holes are aligned. |
| The revised gasket, Part Number 3630839, is the only gasket now available from the supplier. The following service kits will contain the revised gasket: |
