Vehicle Damage Warnings

AH15.20-P-0001-01A Notes For Ceramic Glow Plugs
ENGINE 640, 642, 646.8, 651

In order to prevent damage to the engine, it is important to observe the following information concerning ceramic glow plugs:

^ Ceramic glow plugs are very sensitive to impact shocks.Impact shocks cause invisible damage (hairline cracks) to the ceramic glow pin and lead to engine damage.
^ It is not possible to check the ceramic glow pin for mechanical damage (e.g. hairline cracks).
^ Only use ceramic glow plugs if the packaging is original and unopened.
^ If the ceramic glow plugs have been dropped, it is essential that they be replaced.
^ Only check glow plug with Diagnosis Assistance System (DAS).
^ The glow plug must not be energized with 12 volts otherwise it can be destroyed.