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AT-34
A340E (2JZ-GTE) AUTOMATIC TRANSMISSION - SECOND COAST BRAKE
AT5419
3. INSTALL SECOND COAST BRAKE PISTON OIL SEAL RING
(a) Coat the oil seal ring with ATF.
(b) Install the oil seal ring to the piston groove, then snug it down by squeezing its ends together.
NOTICE: Do not spread the ring ends more than necessary.