The surfaces of the piston and seal must be cleaned only with methylated spirits and then dried.
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Apply a thin coat of assembly paste G 052 150 A2 to piston and seal before inserting.
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Place protective cap with outer sealing lip onto piston.
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Insert inner sealing lip into groove in cylinder using wedge 3409.
When doing this, hold piston in front of brake caliper.
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Screw in piston by turning thumb wheel clockwise.
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To aid screwing in, use special tool T10165/1.
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Apply resetting and removal tool so that collar of tool is resting on brake caliper.
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If the piston is pushed back with a piston resetting tool (e.g. T10145) or by operating the foot brake the automatic adjustment in the brake caliper is destroyed.
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