ar4230d8601a

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

Type ar · topic 42.30 · version 0116 · 2019-02-18

Applies to: 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))

Where it sits

Function group 2 Chassis › 42 Brakes - hydraulic and mechanical systems › 42.30 Anti-lock brake system (ABS) — Series 901 (models 0**, 3**, 4**) · Series 902 (models 0**, 3**, 4**) · Series 903 (models 0**, 3**, 4**) · Series 904 (models 0**, 3**, 4**)

EinPAS 26 Active safety system › 26.20 Braking/traction control › 26.20.35 Hydraulic unit — Series 901 (models 0**, 3**, 4**) · Series 902 (models 0**, 3**, 4**) · Series 903 (models 0**, 3**, 4**) · Series 904 (models 0**, 3**, 4**)

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))

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

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

D42.30-0017-11

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

M101

Nm

16

M121

Nm

–

Referenced documents