Service manual

Group 59 Anti-Lock Brake System (Bendix) Service Procedures
Installation
1
Install the proper fittings on the valve
in the original orientation. Use tape or
paste type thread sealant on fittings to
reduce the probability of leakage.
2
Mount the valve on the vehicle using
two cap screws and nuts. Torque the
nuts to 24 Nm (18 ft-lb).
24 Nm
(18 ft-lb)
3
W5000536
Connect the air supply lines to the
ATR valve as follows:
a) Control air line to port 1
b) Service air line to port 2
c) Delivery air line to port 3
d) Supply line to port 4
4
Connect the valve electrical connector.
5
Build up air pressure in the vehicle’s
air system.
6
Release the parking brakes.
7
Apply air pressure to the service
brakes and verify that there are no air
leaks and that the system is working
properly.
ABS Electronic Control Unit
Replacement
Removal
1
Ensure the vehicle ignition is OFF.
2
Disconnect all connectors from the
ECU.
3
Unbolt the ECU mounting bracket from
the vehicle by removing the two
mounting nuts from the front of the
crossmember. Remove the ECU and
bracket.
4
Remove the four bolts and nuts that
hold the ECU to its bracket.
Installation
1
Verify the vehicle ignition is OFF.
2
Bolt the replacement ECU to its
mounting bracket. Torque the bolts to
7.3 ± 1.7 Nm (65 ± 15 in-lb).
7.3 ± 1.7 Nm
(65 ± 15 in-lb)
3
Install the ECU mounting bracket on
the crossmember and install the
mounting nuts. Torque the bolts to 24
± 4 Nm (213 ± 36 in-lb).
24 ± 4 Nm
(213 ± 36 in-
lb)
4
Connect all electrical connectors to the
ECU. Torque the connector screws to
1.15 ± .35 Nm (10 ± 3 in-lb).
1.15 ± .35 Nm
(10 ± 3 in-lb)
5
Turn the vehicle ignition to ON.
6
Place the TCS switch to OFF.
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