Hydraulic Control Assembly - Antilock Brakes: Service and Repair

ESP(R) Hydraulic Unit / Control Module Assembly Removal and Installation

CAUTION:
^ Be careful not to allow dust to enter in ESP(R) hydraulic unit / control module assembly.
^ Do not place ESP(R) hydraulic unit / control module assembly on its side or turn it upside down. Handling it in inappropriate way will spoil its original performance.
^ Never disassemble ESP(R) hydraulic unit / control module assembly, loosen blind plug or remove motor. Performing any of these prohibited services will spoil original performance of ESP(R) hydraulic unit / control module assembly.
^ Do not allow brake fluid to get on painted surfaces. Painted surfaces will be damaged by brake fluid. Flush it with water immediately if any fluid is spilled.
^ Be sure to tighten fastener to specified torque using torque wrench to avoid damage.
^ Do not give an impact to hydraulic unit.

Removal
1) Disconnect negative (-) cable at battery.
2) Disconnect ESP(R) hydraulic unit / control module assembly connector (1) by pulling down the lock lever (2).








3) Loosen flare nuts (1) using special tool and disconnect brake pipes (2) from ESP(R) hydraulic unit / control module assembly (3).
Special Tool
(A): 09950-78220

NOTE:
Put bleeder plug cap or the like onto pipe to prevent fluid from spilling.





4) Remove or loosen ESP(R) hydraulic unit / control module assembly nuts (1) and remove ESP(R) hydraulic unit / control module assembly (3) from actuator bracket (2).

CAUTION:
Be careful not to damage bushing (5).

NOTE:
If ESP(R) hydraulic unit / control module assembly nuts are not removed, loosen nuts by the end of screw (4) as shown in figure.





Installation
Reverse removal procedure, noting the following points.
^ Tighten brake pipe flare nuts using special tool and ESP(R) hydraulic unit / control module assembly nuts to specified torque.
Special Tool
(A): 09950-78220
Tightening torque
Brake pipe flare nut (M10) (a): 16 Nm (1.6 kg-m, 12.0 lbf-ft)
Brake pipe flare nut (M12) (b): 19 Nm (1.9 kg-m, 14.0 lbf-ft)
ESP(R) hydraulic unit / control module assembly nut (c): 8.0 Nm (0.8 kg-m, 6.0 lbf-ft)

CAUTION:
Be careful not to deform or scratch to bushing when installing ESP(R) hydraulic unit / control module assembly.





^ Bleed air from brake system. (Blake fluid replacement)
^ Check for leakage of brake fluid and perform ESP(R) hydraulic unit operation check. (ESP(R) Hydraulic Unit Operation Check)