Chrysler RAM TRUCK 2500 1994 Service Manual page 193

5 - 34 REAR WHEEL ANTILOCK BRAKE (RWAL) SYSTEM
•
ther pressed inward, or held outward slightly
in order to Meed the front brakes. Use a clip
style tool such as Special Tool
C-4121
to hold
the stem in or out. Do not use pliers or similar
tools a the stem and valve will be damaged.
(1) Fill bleeder tank i f necessary.
(2) Purge air from bleeder tank and lines before
proceeding.
(3) Clean master cylinder reservoir and cover thor­
oughly.
(4) Remove master cylinder cover anddnstall suit­
able adapter (Fig. 21). Various types of adapters are
usually available from the pressure tank manufac­
turer.
(5) Connect bleeder tank pressure hose to adapter
(Fig. 21).
(6) Bleed master cylinder and valves. Bleed master
cylinder first, combination valve second and RWAL-
/ABS valves third.
(7) Bleed rear wheel brake units as described i n
manual bleeding procedure.
(8) Bleed front wheel brake units. Use a clip style
tool to hold metering valve i n or out. Or have a
helper hold valve i n or out by hand. Amount of valve
stem movement needed to hold valve open is quite
modest. Do not use excessive force.
(9) Remove pressure bleeding equipment and top
off master cylinder reservoir.
(10) Verify firm brake pedal before moving vehicle.
(11) Repeat bleeding procedure i f system warning
lights come on, remain on, or i f pedal is still spongy.
Fig. 21 Typical Pressure Bleeder Tank And Adapter
(For Delco Master Cylinder)