Chevrolet 70 1969 Series, Руководство по ремонту

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BRAKES 5A-6
1 Pedal Upper Half
9 Pedal to Push Rod Bolt
2 Pedal Upper and Lower 10 Clevis
Seals
11 Adjusting Nut
3 Upper to Lower Pedal
12 Push Rod
Connector Bolt 13 Boot
4 Pedal Lower Half 14 Mounting Bracket
5 Pedal Return Spring 15 Bracket to Master
6 Pedal Bumper Cylinder Gasket
7 Pedal Support Sill 16 Master Cylinder
8 Pin and Bushing Assy.
Figure 6— Brake Pedal and Master Cylinder Installation (Tilt Cab Models)
pedal assembly to obtain enough clearance to re­
move brake pedal.
1. Remove clutch pedal (for details see "Clutch
Pedal and Bushing Replacement" in " C L U T C H
C O N T R O L S " (SEC. 7D) in this manual.
2. Remove upper to lower pedal connector
bolt. Remove pedal upper half.
3. Remove pedal return spring.
4. Remove pedal to push rod bolt.
5. Remove lock ring and washer from outside
end of pin and bushing assembly.
6 . Remove grease fitting from bushing.
7. Remove bolts which fasten bushing assem­
bly to cab sill.
8 . Simultaneously slide pedal assembly and
bushing assembly out of cab sill in opposite direc­
tions, twisting each as necessary to clear sill and
other obstructions.
IN S T A L L A T IO N
1. Simultaneously insert bushing assembly
from outer side of cab sill and brake pedal assem­
bly from inner side of cab sill, twisting each as
necessary to allow pedal pin to slide completely
through bushing and bushing assembly to slide
completely through cab sill.
2. Install bolts which fasten bushing assembly
to cab sill. Tighten securely.
3. Install grease fitting.
4. Install washer and lock ring on outside end
of pin and bushing assembly.
5. Install pedal to push rod bolt.
6 . Install pedal return spring.
7. Insert pedal upper half through seals and
fasten upper and lower pedal halves with bolt.
8 . Install clutch pedal (for details see "Clutch
Pedal and Bushing Replacement" in " C L U T C H
C O N T R O L S " (SEC. 7D) in this manual.
PUSH R O D A D J U S T M E N T
Before making adjustment, pull the master
cylinder boot back on push rod. Visually check to
see if the piston is seated firmly against piston
snap ring in cylinder bore. If it isn't the push rod
is too long and should be shortened.
IM P O R T A N T : It is better to have push rod ad­
justed too short than for it to be too long.
To adjust, loosen lock nut and grip rod with
pliers. Turn in or out of rod end as necessary.
Adjust so that a slight movement of brake pedal
at pad is necessary before end of push rod contacts
master cylinder piston. If the push rod is too long,
brakes will not release completely. If the push rod
is too short, excessive pedal travel will be re­
quired to apply brakes.
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK SH O P M A N U A L