Pontiac FIREBIRD 1972 Service Manual page 443

SINGLE DIAPHRAGM POWER BRAKE-MORAINE 5A-7
HYDRAULIC PUSHROC
REACTION RETAINER
\
I
SUPPORT PLATE
REACTION SPRING
DIAPHRAGM
CONTROL VALVE
Fig. 5A-5 Exploded View of Power Piston
14. Remove power piston bearing from rear housing.
MASTER CYLINDER
DISASSEMBLE
Refer to Section 5
-
Brakes-General for master cylinder
disassembly and service procedures.
Thoroughly wash all parts in alcohol and air dry. Blow
dust and cleaning fluid out of all internal passages. Inspect
all metal parts for scoring, pitting, dents or nicks. Small
imperfections can be smoothed out with fine emery cloth.
Replace if badly nicked, scored or otherwise damaged. Do
not attempt to repair any plastic part.
AIR FILTER
Replace air filter elements if dirty. Do not clean.
INSPECTION A N D CLEANING
CAUTION: It is important that all parts be
placed on a clean paper after being claned to
prevent the possibility of dirt being assembled
into unit or grease contacting any rubber parts.
Dirt is a major cause of trouble in service. Re-
wash at time of assembly
if
there is any reason
to doubt cleanliness.
MASTER CYLINDER
ASSEMBLE
Refer to Section 5
-
Brakes-General for assembly proce-
dures.