Subaru 2001 IMPREZA Service Manual page 54

C: DISASSEMBLY
1. PRECAUTIONS FOR DISASSEMBLING
1) Remove mud and dirt from the surface of brake
master cylinder.
2) Prepare tools necessary for disassembly opera-
tion, and arrange them neatly on work bench.
3) Clean work bench.
2. DISASSEMBLING PROCEDURE
1) Remove pin with drift pin which secures reserve
tank to master cylinder.
2) Remove cylinder pin with magnetic pick-up tool
while pushing in primary piston. (with ABS)
(1) Cylinder pin
3) Pry up the pawl and remove the piston retainer.
NOTE:
Piston may jump out from master cylinder.
4) Extract primary piston assembly and secondary
piston assembly.
CAUTION:
• Do not disassemble the piston assembly;
otherwise, the spring set value may be
changed.
• Use brake fluid or methanol to wash inside
wall of cylinder, pistons and piston cups. Be
careful not to damage parts when washing. If
methanol is used for washing, do not dip rub-
ber parts, such as piston cups, in it for more
than 30 seconds; otherwise, they may become
swelled.
MASTER CYLINDER
D: ASSEMBLY
1. PRECAUTIONS FOR ASSEMBLING
1) When assembling, be sure to use recommended
brake fluid.
2) Ensure that the inside wall of cylinder, pistons,
and piston cups are free from dirt when assem-
bling.
3) Be extremely careful not to damage, scratch, or
dent cylinder inside wall, pistons, and piston cups.
4) Do not drop parts. Never attempt to use any part
that has been dropped accidentally.
2. ASSEMBLING PROCEDURE
1) Assembling piston assembly:
Apply recommended brake fluid to inside wall of
cylinder, and to outer surface of piston assembly,
and install piston assemblies carefully into cylinder.
2) Assembling cylinder pin:
3) Press the pawl and install the piston retainer into
the master cylinder.
S4M0123B
4) Install seal to reservoir tank.
S4M0124
5) Install pin with drift pins which secures reservoir
tank to master cylinder.
BR-53
(1) Seal
BRAKE
S4M0124
B4M1450C