Audi Workshop Service and Repair Manuals

Removing and installing glow plugs Special tools and workshop equipment required

t  U/J extension and socket, 10 mm -3220- for engine codes CBAA, CBAB, CBBB

t  Socket insert AF 12 for glow plugs 4-cyl.TDI CR diesel -VAS 6454- for engine code CBEA

t  Pliers -3314-

Glow plug versions 1 -  Glow plug with combustion chamber pressure sender (only installed on vehicles with engine code CBEA) 2 -  Glow plug without combustion chamber pressure sender   Note t  On vehicles with engine code CBEA, a combustion chamber pressure sender is integrated in each glow plug. t  Designation: glow plug 1 -Q10- with internal cylinder pressure sender for cylinder 1 -G620- t  Designation: glow plug 2 -Q11- with internal cylinder pressure sender for cylinder 2 -G621- t  Designation: glow plug 3 -Q12- with internal cylinder pressure sender for cylinder 3 -G622- t  Designation: glow plug 4 -Q13- with internal cylinder pressure sender for cylinder 4 -G623- Removing –  Switch off ignition. –  Remove engine cover panel → Chapter.   Caution Make sure that no wire connection is damaged when unplugging the glow plug connectors; otherwise the entire wiring harness must be renewed. When unplugging the glow plug connectors, do not compress the pliers -3314- with too much force so that the support sleeve is not damaged.

–  Release retaining clips and move clear wiring harness -2-.

–  Apply groove -arrow A- of pliers -3314- to collar of support sleeve -arrow B- and pull glow plug connectors off glow plugs. –  Clean glow plug openings in cylinder head; make sure no dirt gets into cylinder.   Note t  Cleaning procedure: t  Use a vacuum cleaner to remove coarse dirt. t  Spray brake cleaner or suitable cleaning agent into glow plug openings, let it work in briefly, and blow out with compressed air. t  Then clean the glow plug openings using a cloth moistened with oil.

–  To slacken the glow plugs use special tool U/J extension and socket, 10 mm -3220-.   Note

For vehicles with engine code CBEA, use socket insert AF 12 for glow plugs 4-cyl.TDI CR diesel -VAS 6454- to slacken the glow plugs. Installing –  Use a suitable torque wrench to tighten glow plugs. –  Then tighten glow plugs to specified torque. l  Tightening torque: 17 Nm

–  Fit glow plug connectors back onto glow plugs.   Note

t  Illustration shows glow plug connector of vehicle with engine code CBEA. t  Check that glow plug connectors are securely seated.