Dodge RAM TRUCK 1500 1995 Service Manual page 206

5 - 34 REAR WHEEL ANTILOCK BRAKE (RWAL) SYSTEM
Bit
HARNESS
CUP
SENSOR
HARNESS
CONNECTOR
Fig. 18 Disengaging Harness
Sensor
SENSOR
HARNESS
J9405-92
ctorAt Rear
HOSE
U-CLIP
J9405-93
Fig. 19 Sensor Rear Harness Attachment
M A N U A L BLEEDING PROCEDURE
(1) If master cylinder has been overhauled or a
new cylinder will be installed, bleed cylinder on
bench before installation. This shortens time needed
to bleed system and ensures proper cylinder opera­
tion.
(2) Wipe master cylinder reservoir and filler caps
clean with shop towels. Use Mopar brake cleaner if
exterior of reservoir and filler caps are extremely
dirty.
(3) Remove reservoir filler caps and fill reservoir
with Mopar, or equivalent DOT 3 brake fluid.
(4) Open all caliper and wheel cylinder bleed
screws.
(5) Close bleed screws when fluid starts dripping
from bleed screws.
(6) Top off master cylinder reservoir again.
(7) Bleed brakes in following sequence:
• master cylinder
• combination valve
• rear antilock valve
• passenger side rear wheel
• driver side rear wheel
• passenger side front wheel
• driver side front wheel
(8) Observe following precautions during bleeding
procedure:
• Do not pump brake pedal at any time while bleed­
ing. Air in system will be compressed into small bub­
bles that are distributed throughout hydraulic
system. This will make a second and third bleeding
operation necessary.
• Bleed only one valve, or wheel brake unit at a
time and use a bleed hose on each wheel cylinder
and caliper bleed screw.
• Attach one end of bleed hose to bleed screw and
insert opposite end in glass container partially filled
with brake fluid (Fig. 20). Glass container makes it
easier to see air bubbles as they exit the bleed hose.
• Be sure end of bleed hose is immersed in fluid. Im­
mersing hose end in fluid prevents air from being
drawn back into cylinder and brakeline.
(9) Bleed master cylinder first. Have helper oper­
ate brake pedal while bleeding each master cylinder
fluid outlet line.
CAUTION: Do not allow the master cylinder to run
out of fluid during bleed operations. An empty cyl­
inder will allow additional air to be drawn into the
system. Check the cylinder fluid level frequently
and add fluid as needed.
FLUID
CONTAINER
PARTIALLY
FILLED WITH
FLUID
J8905-1I
Fig. 20 Typical Fluid Container And Bleed Hose