Dismantling the ABS control unit
1, 2, 3, 4, 5, 6 - screws; 7 - hydraulic device; 8 - electronic unit
Electronic unit with hydraulic device
1 - hydraulic device; 2 - valve body; 3 - contacts; 4 - gasket; 5 - coil; 6 - electronic block
1. Remove the control unit from the car (see subsection 9.10.2).
2. Remove the six screws securing the electronic unit 8 (see fig. Dismantling the ABS control unit) control to the hydraulic device 7.
3. Remove the electronic unit 8 from the hydraulic device 7. In doing so, do not distort the unit, otherwise the valves 2 (see fig. Electronic unit with hydraulic device) hydraulic device will jam in the electromagnetic coils 5 of the electronic unit.
4. Using a clean cloth soaked in alcohol, gently wipe the surface of the hydraulic device 1 that mates with the electronic unit 6. Do not work on this surface with any tool (e.g. with a scraper, file, etc.). Hydraulic device with damaged surface (marks, scratches, etc.), oxidized or burnt contacts 3 must be replaced.
5. Gasket 4 cannot be replaced separately, so do not remove it.
6. Remove dirt from valves 2, coils 5 and contacts 3 with a clean rag. Do not blow them with compressed air from the line, as oil and water can enter with air. Do not use solvents or detergents for cleaning either.
Attention! Do not test the operation of the pump by applying voltage to the contacts of the hydraulic device, as they may burn.
7. Carefully put the electronic unit on the hydraulic device and, after making sure that the valves 2 have entered the coils 5, press the block 6 to the hydraulic device 1. In this case, the block body should go beyond the flange of the hydraulic device.
8. Screw in, without finally tightening, the middle screws 1 and 2 (see fig. Dismantling the ABS control unit) mounts. Use only the new screws supplied with the control box.
Attention! Forbidden «drive away» defective thread. A hydraulic device with damaged threads must be replaced.
9. Screw in screws 3 and 4 and then 5 and 6 by hand at the corners.
10. Finally tighten all screws to the correct torque in the order shown (see paragraphs. 8 and 9).
11. Install the control unit on the car.
The tightening torque of the screws for fastening the electronic unit on the hydraulic device is 3 Nm.