Remove/install ABS/ABD or ABS/ETS hydraulic unit

AR42.30-D-8601A

Remove/install ABS/ABD or ABS/ETS hydraulic unit

12.02.2019

Model

901.0##/3##/4## ## up to 718187, 902.0##/3##/4## ## up to 718187, 903.0##/3##/4## ## up to 718187, 904.0##/3##/4## ## up to 718187

with code BB0 (Antilock brake system (ABS))

1

Hydraulic unit

2

ABS/ABD control unit

5

Bolt M6

6

Hydraulic lines

7

Pump motor ground strap

8

ABS/ABD control unit multiplug

 

Remove/install

 Caution

Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid

Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.

AS42.50-Z-0001-01A

Topical note

Notes on line connections on hydraulic unit

AH42.30-N-0001-01B

Topical note

Brake fluid notes

AH42.50-P-0001-01A

Topical note

Notes on repairs to brake system

AH42.00-P-0003-01A

Topical note

Important notes concerning repair work on the antilock brake system (ABS)

AH42.30-N-0002-01A

1

Withdraw ignition key

2

Detach multiplug (8) from control unit

AR42.30-D-8252-03A

3

Detach brake lines (6) from hydraulic unit

Topical note

Notes on line connections on hydraulic unit

AH42.30-N-0001-01B


Seal connections and lines
in order to prevent any soiling.

Never swap the brake lines:



Notes on connection fittings on hydraulic unit

 Threaded connection for brake lines at hydraulic unit

*BA42.30-N-1003-03A

4

Disconnect ground line (7) from pump motor

 Nut, ground cable to hydraulic unit

*BA42.30-N-1002-03A

5

Unscrew screws/bolts (5)

 Screw/bolt/nut, hydraulic unit to bracket

*BA42.30-N-1001-03A

6

Remove hydraulic unit from holder

 Only store hydraulic unit upright.

7

Check rubber bearings on holder

Replace if necessary.

8

Install in the reverse order

9

Bleed brake system and test for leaks

AR42.10-D-0010A

10

Check fluid level in reservoir and correct if necessary



AP42.50-D-4210A

11

Perform test program



AD42.30-D-3020A

 Hydraulic unit

Number

Designation

Model 901.0/3/4, 902.0/3/4, 903.0/3/4, 904.0/3/4
with code BB0 (Antilock brake system (ABS))
with ABS/ABD

BA42.30-N-1001-03A

Screw/bolt/nut, hydraulic unit to bracket

M6

Nm

10

 Hydraulic unit

Number

Designation

Model 901.0/3/4, 902.0/3/4, 903.0/3/4, 904.0/3/4
with code BB0 (Antilock brake system (ABS))
with ABS/ABD

BA42.30-N-1002-03A

Nut, ground cable to hydraulic unit

M5

Nm

2,7

M6

Nm

–

 Hydraulic unit

Number

Designation

Model 901.0/3/4, 902.0/3/4, 903.0/3/4, 904.0/3/4
with code BB0 (Antilock brake system (ABS))
with ABS/ABD

BA42.30-N-1003-03A

Threaded connection for brake lines at hydraulic unit

M101

Nm

16

M121

Nm

–