2
Removal and Installation
4
Meritor WABCO
Maintenance Manual MM-1012 (Issued 02-10)
General Requirements
앫
Mount the air control unit so that there is no direct splash or
spray from a wheel.
앫
Keep the air control unit at least 12 inches (305 mm) from any
heat producing sources like exhaust manifolds or pipes,
transmissions, etc.
앫
Line sizing from and to the air control unit should be at least
1/4 inch (6.35 mm).
앫
Make sure there are no valves or other devices in the air supply
line to the air control unit.
Replacement Procedures
ACU Replacement
If there is a problem with the ACU functioning correctly, replace the
entire valve. Do not attempt to service or repair the valve. Refer to
Limited Warranty Document TP-1011 for warranty information.
ACU Removal
1.
Remove the air lines to and from the ACU.
2.
Remove the electrical harness from the ACU.
3.
Remove the two fasteners and remove the ACU.
4.
Remove the threaded hose fittings from the removed ACU.
ACU Installation
1.
Install the threaded hose fittings removed from the old ACU
onto the new ACU.
2.
Using two new fasteners, bolt the ACU to the bracket and
tighten the fasteners to 11 ft-lb (15 N
폷
m).
@
3.
Verify the removed air lines are clean and then connect them to
the new ACU.
4.
Connect the vehicle electrical harness to the ACU.
