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– To check depth of countersink, place insert -1- other way
round, i.e. with seat -A- first, into countersink.
Seat of insert must disappear fully inside countersink.
– Remove swarf, wear safety goggles.
– Swing drilling jig -1- back over bore and fasten with fitted bolt
-2-.
– Then slide appropriate brass sleeve -D- from rear onto screw
tap -E- -arrow 1- so that special drill bit cutting edges do not
damage brass sleeve.
– Apply a little cutting oil to screw tap.
– Insert screw tap together with brass sleeve into drilling jig
-C- -arrow 2-.
Initially the brass sleeve still protrudes a little from the drilling jig.
The guiding action is nonetheless assured.
– Locate gripping tool -1- on screw tap -2- and tighten.
Touareg 2010 ➤
Brake systems - Edition 05.2011
3. Repairing thread in brake caliper connection
55
