ABS Control Module and Hydraulic Control Unit (ABS CM & H/U): Replacement

CAUTION:

Because the seal of ABSCM cannot be replaced, do not pull or peel it with lifting up.
Because the screw part of H/U deteriorates in every replacement procedure, do not perform the replacement more than five times on it. When the malfunction is found though the replacement that performed is less than five times, replace the H/U body.
Use new screws for installation of ABSCM.
When the sealing surface of ABSCM or H/U is dirty or damaged and it cannot be removed or repaired, replace it with new one.

Remove the ABS CM & H/U. < Ref. to REMOVAL , ABS Control Module and Hydraulic Control Unit (ABS CM & H/U). >
To prevent entering foreign matter and brake fluid leakage, plug the oil pressure port of ABS CM & H/U using screw plug and etc.
Set the pump motor part of removed ABS CM & H/U faces down in the vise.
NOTE: Before securing a part on a vice, place cushioning material such as wood blocks, aluminum plate or cloth between the part and vice.

Fig 1: Removing Four Screws Of ABSCM
Courtesy of SUBARU OF AMERICA, INC.
Using TORX(R) bit E5, remove the four screws of ABSCM.
NOTE: Always use new screws.

Fig 2: Removing ABSCM Upward From H/U
Courtesy of SUBARU OF AMERICA, INC.
Slowly remove the ABSCM upward from H/U.
NOTE: To prevent damaging of coil part, remove the ABSCM straightly from H/U.
Ensure there are no dirt or damage on sealing surface of H/U.
CAUTION:
- Do not clean the ABSCM & H/U with applying compressed air.
- Do not repair the damages of H/U sealing surface using file or metal scraper. To remove the sealing, use resin scraper. Do not use the chemical materials (thinner and etc.).
Position the coil of new ABSCM to align H/U valve.
To prevent deforming of ABSCM housing cover, hold the corner of ABSCM and install it to the H/U without tilting.
Using TORX(R) bit E5, tighten the screws step-wise in the order of (1) through (4).
CAUTION: Always use new screws.

Tightening torque:

1.5 N.m (0.15 kgf-m, 1.1 ft-lb)

Fig 3: Checking Foreign Matter Aligning Part Between ABSCM And H/U
Courtesy of SUBARU OF AMERICA, INC.
Check that there is no foreign matter in aligning part between ABSCM and H/U.
Using TORX(R) bit E5, tighten the screws step-wise in the order of (1) through (4) again.
Tightening torque:

3N.m (0.3 kgf-m, 2.2 ft-lb)
Check that there is no clearance in aligning part between ABSCM and H/U.
Install the ABS CM & H/U to vehicle. < Ref. to INSTALLATION , ABS Control Module and Hydraulic Control Unit (ABS CM & H/U). >