PEUGEOT 504 Series 1970 Workshop Manual page 456

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BRAKES
STANDARD MASTER-CYLINDER
IMPORTANT:
OVERHAULING
DISMANTLING
- Remove the securing circlipandadjoiningwasher,
- Withdraw the piston and spring {eject the niain cup
(1)
using an air-line).
- Thoroughly clean with meths, and dry all parts.
VISUAL CHECK
- Any defect which could be the cause of leakage or
faulty operation of the cylinder cannot be tolerated.
Look for : scale, scoring hurrs, corrosion, wear
distortion.
- Check in particular ·
a - cylinder bore,
b - chreads,
c - all orifices,
d - piston .
- Polishing the cylinder bore or the piston with emery cloth 1s absolutely forbidden.
- Cups, security disc, and circlip must al l be replaced.
- The master-cylinder must not be re-assembled wit h the residual pressure valve in-place.
3-74 .._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Ref . 1212 · E.