Jeep UNIVERSAL CJ-2A - Adjust

p
BRAKES
cylinder first, the next longest second, etc. During
th e bleeding operation the master cyli nder must
be k ept at least =
1
.
1
full of hydraulic brake fluid.
To
bleed the brakes, first carefully clean all dirt
fr om a round the master cylinder fi ll er plug. Re -
move the fi ll er pl ug and fill the master cy li nder to
th e lower edge of filler neck. C l ~ off all bl eeder
con n ectio ns at all four wheel cy linders. Attach
bleeder hose and fixture to rig ht rear wheel cylinder
bl eede r screw and place end of tube in a gla ss jar ,
and submerged in brake fluid. O pen the bleeder
valve one-h alf to thre e- qu ar ters of a turn. See
Fi ~ . 283.
Depress the foot pedal, allowing it to return very
slowly. C ontin ue this pumpin g act ion to force th e
fluid
through the line and out of th e bleeder ho se
which carries with it any a ir in the system. Wh en
bubbl es cease to appear at the end of the ble eder
hose, close the ble eder valve a nd re move the hose.
Af ter the bleed in g operation at eac h wheel cyl ind er
has
been co mpleted, fill the master cylinder res er-
vo ir a nd r eplace the filler plu g.
Do
not re-use the liquid whi ch has been removed
from th e lines through the bleeding process because
of air bubbles and dirt.
FI G. 281-W HEEL BRAKE CYL INDER
!- B oo t
2-
Piston
3 - Cylinder Cu p
4 -S prin~
5-Cy l inder
6-Biecd Screw
P -5. Br ake Pe da l Adju stme nt
[ 10152
Th ere shou ld always be at l east 72" [1 2 .7 mm .]
free peda l tr avel before the pu sh rod engage s the
master cyl ind er pist on .
This adj us tm ent is accomplished by shortening or
len gt h ening of the brake master cylinder eye bolt
Fi g. 277. This is done so th e primary cup will
clear lhe by-pass port when the piston is in th e
off position, ot herwis e the compensati ng ac tion of
the master cyl ind er .for expans i on and co ntracti on
of the fluid in the syst em, due lo temperatur e
changes, will be destroyed and ca us e the brakes
to dr ag .
No te : Som e older 'Jeep' vehicles may deve l op sid e
rnovement of the clutch and br ake peda ls resultin g
from w
ear of the peda ls, shafts, a nd bushings. On e
way to compe ns ate f or this w ea r is to install a pedal
slack adjuste r kit, Pa rt No. 921936.
P- 6. Br a ke Adju s tm e nt
The locations of the brake adjusting ecce ntrics are
shown in Fig. 284 and 286.
226
First be certain that the brake pe dal has Y2" [ 12.7
mm.] free travel.
Jack up the whee ls to clear the floor. Adjustment is
made by rotating the brake shoe eccentr ic, Fig. 286.
W
ith a wrench loosen the lock nut for the forward
brake shoe, hold the l ock nut and with br ake
wrench W -213 turn the ecce ntric towards the front
of the vehicle until th e brak e sho es strikes the drum,
th er. while turning the wheel with one hand r e-
l ease ecce ntric until the wh ee l t urns fr eely . H old
the eccen tric in positi on a nd f as ten the lock nut.
FIG. 282 - HAND BRAKE ADJUSTMENT
MODEL DJ -3A
To adjust the r everse shoe, repeat this operati on
on ly turn the eccent ri c towards the back of the
vehicle. Do this on all four brakes . Ch eck t he fluid
level
in the master cylinder.
FIG. 283-BLEEDING BRAKES
I Blee der Screw
2- Bi e•der H <>se
On M odels CJ - 2A and CJ -3 A, if add itional adjust-
me nt is required or when relinin g the brakes, reset
the a nchor pins as follows: