Subaru SVX 1992 Manual page 880

4-4 poll BRAKES
4) Disconnect brake pipes from master cylinder.
Fig. 108
Fig . 109
Be extremely careful not to spill brake fluid. Brake fluid
spilt on the vehicle body will harm the painted surface;
wipe it off quickly if spilt.
B : DISASSEMBLY
1 . PRECAUTIONS FOR DISASSEMBLY
1) Remove mud and dirt from the surface of brake
master cylinder.
2) Prepare tools necessary for disassembly operation,
and arrange them neatly on work bench .
3) Clean work bench .
4) Tools for disassembly operation :
Phillips screwdriver 1
" C-ring pliers 1
2. DISASSEMBLY PROCEDURE
1) Remove supply valve stopper.
2) Remove C-ring with C-ring pliers pushing in primary
piston slightly.
Piston may jump out from master cylinder.
00
Primary piston
Push in primary piston slightly .
84-402
Fig . 110
3) Extract primary piston CP and secondary piston CP .
a. Do not disassemble the piston CP ; otherwise, the
spring set value may be changed.
b. 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 rubber parts, such as piston cups,
in it for more than 30 seconds; otherwise, they may
become swelled.
~ C : INSPECTION
If any damage, deformation, wear, swelling, rust, and
other faults are found on the primary piston CP, second-
ary piston CP, supply valve stopper, or gasket, replace
the faulty part .
a. The primary and secondary pistons must be re-
placed as complete assemblies.
b. The service limit of the clearance between each
piston and the master cylinder inner dia. is 0.11 mm
(0 .0043 in).
c. When handling parts, be extremely careful not to
damage or scratch the parts, or let any foreign matter
get on them.
F
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 assembling .
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 .
50
5) Remove master cylinder from brake booster .