ar4230d0705a

Remove/install ABS hydraulic unit

Type ar · topic 42.30 · version 0101 · 2012-05-04

Applies to: MODEL 668, 670

Where it sits

Function group 2 Chassis › 42 Brakes - hydraulic and mechanical systems › 42.30 Anti-lock brake system (ABS) — Series 668 · Series 670

EinPAS 26 Active safety system › 26.20 Braking/traction control › 26.20.35 Hydraulic unit — Series 668 · Series 670

AR42.30-D-0705A

Remove/install ABS hydraulic unit

27.4.12

MODEL 668, 670

Remove/install ABS hydraulic unit

D42.30-1122-11

1 Brake lines

2 Hydraulic unit

3 Brake lines

4 Nuts

5 Rubber bushing

6 Clutch

A2 ABS control unit

Remove/install

Danger!

Risk of poisoning caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes

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

Brake fluid notes

AH42.50-P-0001-01A

Notes on repairs to brake system

AH42.00-P-0003-01A

1

Switch off ignition

2

Unscrew brake lines (1, 3) from hydraulic unit (2)

Seal ends of line using stop plugs.

Installation: When replacing the hydraulic unit (2), connect the brake lines (1) to the wheel brakes first.

*BA42.30-N-1003-03A

*129589009100

3

Release and detach coupling (6) from ABS control unit (A2)

4

Remove hydraulic module (2)

For this purpose, unscrew and remove nuts (4).

*BA42.30-N-1001-03A

Checking

5

Check rubber mount (5)

Replace according to condition.

6

Install in the reverse order

7

Bleed brake system

Model 668, 670, vacuum assisted brake system with electrical air compressor (power brake system)

AR42.10-L-0010A

MODEL 668, 670 with CODE (B16) 2-circuit hydraulic / 2-circuit air brake

AR42.10-L-0010B

8

Check fluid level in reservoir; correct if necessary

Hydraulic brake system - check fluid level, correct if necessary

AP42.50-D-4210A

9

Check brake system for leaks

AR42.10-S-0100-01S

Hydraulic unit

Number

Designation

Model
668, 670

BA42.30-N-1001-03A

Bolt/nut, hydraulic unit to bracket

M6

Nm

8

BA42.30-N-1003-03A

Threaded connection of brake lines on hydraulic unit

M101

Nm

16

M121

Nm

16

Remove/install ABS hydraulic unit

Set of stop plugs

129 589 00 91 00

Referenced documents