Chevrolet 1980 Light Duty Truck Repair Manual page 164

5-28 BRAKES
1. Remove And Install Spool Valve Plug And Seal In Car.
1. Turn engine " O F F " and pum p brake
pedal 4 or 5 times to deplete accum ulator.
2. Remove parts as shown.
2. Remove And Install Hydro-Boost II.
N O TIC E : Power steering flu id and
brake flu id cannot be m ixed. If brake
seals con tact steering flu id or steering
seals con tact brake flu id , damage w ill
result.
1. T u rn engine " O F F " and pum p brake
pedal 4 or 5 times to deplete accum ulator.
2. Remove parts as shown.
27 N *m (20 FT. LBS.)
DO N OT DISCONNECT
B R A K E LINES
O V E R H A U L M A N U A L
HYDRO-BOOST II
R EM O VE
REM O VE
IN S TA LL
1. Install parts as shown.
2. Fill and bleed system. Refer to
H ydro-B oost II bleeding procedure.
27 N -m (20 FT. LBS.)
DO N O T D ISCONNECT
B R A K E LIN ES
IN S T A L L
1. Install parts as shown.
2. Fill and bleed system. Refer to
H ydro-B oost II bleeding procedure.
V;M — R E T A IN E R
P ED A L
ROD
B R AK E
PEDAL
R E TU R N
HOSE
SPOOL R E TU R N SPRING
" O " R IN G
SPOOL PLUG
R E T A IN E R
PUSH SPOOL PLUG IN A N D
R E M O V E R E T A IN E R W ITH
S M A L L S C R E W D R IVER .
20 N 'm (15 FT. LBS.)
20 N *m (15 FT. LBS.)