Suzuki WagonR+ RB310 Service Manual page 1147

7B1-182 AUTOMATIC TRANSAXLE (M13 ENGINE MODEL)
9) Install 1st and reverse brake return spring subassembly (1)
to transaxle case (2).
10) Apply A/T fluid to 1st and reverse brake discs (2) separator
plates (3) and retaining plate (1), then install them to tran-
saxle case.
11) Compress 1st and reverse brake return spring using special
tool and hydraulic press, then attach snap ring.
CAUTION:
Do not damage 1st and reverse brake return spring sub-
assembly discs, plates and piston by pressing in 1st and
reverse brake return spring subassembly passing
through its original installing position over 0.8 mm (0.031
in.)
Special tool
(A): 09926-97620