Chevrolet 1973 Overhaul Manual page 132

Part
Diaphragm Support Plates
Poppet Valve
A ir Valve - Push Rod
Assembly
Front and Rear Housings
A ir Filters and Silencer
IN S P E C T IO N C H A R T
For
Inspect
1. Cracks, distortion,
chipping, damaged lever
seats, pitted or rough
holes.
2. Worn seal surfaces
(tubes).
3. Rough or uneven
valve seat.
4. Open passages and flo w
holes.
1. Deterioration o f rubber
or warped valve face.
1. A ir valve: scratches,
dents, distortion, or
corrosion of I.D. or O.D.
A ll seats to be smooth
and free o f nicks and
dents.
2. Push rod must move freely
in air valve, but must not
pull out.
1. Scratches, scores, pits,
dents, or other damage
affecting rolling or seal­
ing o f diaphragm or other
seals.
2. Cracks, damage at ears,
damaged threads on studs.
3. Bent or nicked locking
lugs.
4. Loose studs.
1. D irty
BRAKES
Corrective A ctio n
1. Clean up or replace.
2. Replace
3. Replace
4. Clean
1. Replace
1. Do not repair - replace.
2. If worn, replace air valve -
push rod assembly.
1. Replace, unless easily repaired.
2. Replace, unless easily repaired.
3. Replace, unless easily repaired.
4. Replace or repair.
1. Replace.
5 -2 9
OVERHAUL MANUAL