| Removing and installing, checking the ceramic pencil type glow plugs |
| For engine with engine identification characters BMS |
| Special tools and workshop equipment required |
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| Handheld multimeter, e.g. -V.A.G 1526 B- |
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| Hose -N 020 150 5- approx. 250 mm |
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| Flexible-head wrench SW 10 -3220- |
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| Means for loosening the screwed connections |
Note | Pay attention to the handling of the ceramic pencil type glow plugs → Chapter. |
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| Disconnect electrical plug connections at the glow plugs. |
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| When slackening the ceramic pencil type glow plug the maximum permissible torque of 20 Nm must not be exceeded. |
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| Always slacken ceramic glow plug with recommended socket insert and torque wrench. |
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| Carefully slacken glow plug in compliance with the maximum permissible torque of 20 Nm. |
| If the glow plug cannot be slackened with a torque of max. 20 Nm: |
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| Use commercially available tool to slacken the screwed connections and repeat the slackening procedure. |
Note | If the glow plug cannot be slackened with a torque of max. 20 Nm using the tool for slackening, remove the cylinder head and then unscrew the plug. |
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| Put hose -N 020 150 5- with a length of approx. 250 mm onto the loosened pencil type glow plug and carefully unscrew without tilting. |
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| Pull up the unscrewed ceramic glow plug with hose to avoid any contact and carefully place down. |
Note | Threads of cylinder heads and glow plugs must be clean and dry, free from oil and lubricant. |
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| Clean holes for glow plugs in cylinder head from fixed combustion residues. |
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| Screw ceramic glow plugs into the holes and lightly tighten by hand. |
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| The tightening torque of the ceramic pencil type glow plugs must be observed: max. 12 Nm (for threads which are clean, dry and free from oil and grease). |
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| In case of non compliance there is a risk of breakage of the pin, which can always lead to severe engine damage. |
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| Tighten ceramic glow plugs with recommended socket insert and torque wrench to tightening torque of max. 12 Nm. |
| Inspect the installed ceramic glow plugs before the first engine start: |
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| Connect handheld multimeter -V.A.G 1526 B- for resistance measurement between contact and glow plug housing. |
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| Specified value: less than 1 Ω |
| If the specified value is exceeded (greater than 1 Ω): |
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| Remove ceramic glow plug and check if the pin is not broken off. |
Note | In case of breakage of the ceramic glow plug pin all broken pieces must be removed from the cylinder before starting the engine, otherwise this could result in engine damage due to seizures. If required, the cylinder head must be removed. |
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| Re-connect electrical plug connections for glow plugs. |
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| 1. Interrogate and erase the fault memory of the engine control unit. Do not start the engine! |
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| 2. Performing self-diagnosis. |
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| 3. Interrogate the fault memory of the engine control unit again. Do not start the engine! |
Note | The engine must not be started as long as a fault concerning the ceramic glow plugs is stored in the fault memory! |
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| Check electrical wiring and plug connections for glow plugs. |
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