PEUGEOT 504 Series 1970 Workshop Manual page 466

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3-74
BRAKES
CHECKING A SERVO-UNIT
1,~
II - CHECKING RETURN TO "STOP"
- Free the servo-unit (five appl1cat1ons of the brake
pedal with engine switched-off).
- Replace the pivot pin with gauge rod (K4) "pushed
home".
- Slacken a b leed screw (connect bleed tube and
vessel).
- Depress the brake pedal. fully.
- Re·tighten the bleed screw.
- Slowly release the brake pedal.
- Posit 100 the gauge (K3) so that it presses against the
servo·unit at the foot of the rubber bellows the
gauge rod (K4) should engage freely in the notch.
1 • On all 504 LH drive saloon models, Mastervac
with cranked thrustrod (3).
·On 504 RH drive saloons equinped with a
20.6
m/m dia. master ylinder.
2 ·On 504 LH drive saloon models Mastervac with
straight thrustrod
(3) •
• Oerrvatives or
504.
On 504 L
·On
505
RH drive saloons equipped with
a
19 m/m dia. master-cylinder.
If the thrust rod does not engage with the corres·
ponding notch.
- Check :
the adjustment of the stop light switch (working
clearance
1,5
m/m.).
· the free movement of the break pedal,
If adjustment of the stop light switch and the brake
pedal is correct, then the servo-unit is suspect
- Replace pivot pin and secure with a new clip,
Aet 1212 E