Remove/install Electronic Stability Program (ESP(R)) hydraulic unit

AR42.45-S-0817E

Remove/install Electronic Stability Program (ESP(R)) hydraulic unit

28.02.2020

Model

447, 448

Modification notes

27.02.2020

Work procedure revised

The whole document

Shown with ENGINE 651

1

Brake fluid reservoir

2

Hydraulic lines

3

Hydraulic lines

4

Electrical connector

5

Nuts

N30/4

Electronic Stability Program (ESP) control unit

Shown with engine 780.702

6

Bracket

7

Guides

N30/4

Electronic Stability Program (ESP) control unit

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.Model 447 with engine 780

AS00.00-Z-0035-01A

 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

General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment

Model 447 with engine 780

AH00.00-Z-0300-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Brake fluid notes

AH42.50-P-0001-01A

Topical note

Notes on repairs to brake system

AH42.00-P-0003-01A

Notes on inspecting corrosion on brake lines

AH42.50-Z-0002-01A

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW

General information on malfunctions in the brake system

AH42.30-N-2007-01A

 

Remove/install

1

Suction off brake fluid from brake fluid reservoir (1) and then seal brake fluid reservoir (1) again.

 Commercially available devices/tools
Extraction bellows

2

Remove brake fluid reservoir (1) from air/water duct.

 To do so, remove expansion rivet.

 Installation: Check expansion rivet for damage.

If damage is present,



replace expansion rivet.

3

Disconnect electrical connector (4).

4

Remove hydraulic lines (2).

 Removal: Mark assignment of hydraulic lines (2).

 Collect any escaping brake fluid using suitable rags. Seal the connections and hydraulic lines (2).
Different retaining screws are installed depending on the given vehicle version.

 Installation: Note assignment of hydraulic lines (2).

 Retaining screw, brake line to hydraulic unit

*BA42.10-N-1003-04D

 Box wrench bit

*000589750300

 Box wrench

*000589760300

 Box wrench bit

*140589000300

 Record plug

*129589009100

5

Remove hydraulic lines (3).

 Removal: Mark assignment of hydraulic lines (3).

 Collect any escaping brake fluid using suitable rags. Seal connections and hydraulic lines (3).
Different retaining screws are installed depending on the given vehicle version.

 Installation: Note assignment of hydraulic lines (3).

 Retaining screw, brake line to hydraulic unit

*BA42.10-N-1003-04D

 Box wrench bit

*000589750300

 Box wrench

*000589760300

 Box wrench bit

*140589000300

 Record plug

*129589009100

6

Remove nuts (5).

Model 447 with engine 274, 622, 651, 654, 780.701
Model 448

 Bolt, hydraulic unit to bracket

*BA42.10-N-1005-04D

7.1

Remove Electronic Stability Program (ESP) control unit (N30/4).

Model 447 with engine 274, 622, 651, 654, 780.701
Model 448

7.2

Remove Electronic Stability Program (ESP) control unit (N30/4) with holder (6).

Model 447 with engine 780.702

 Installation: Check holder (6) is correctly seated in guides (7).

8

Install in the reverse order.

9

Commission Electronic Stability Program (ESP) control unit (N30/4) using diagnostic system.

When replacing the Electronic Stability Program (ESP) control unit (N30/4).



Connect STAR DIAGNOSIS and read out fault memory

AD00.00-S-2000-04E

10

Remove vehicle diagnosis system.

When replacing the Electronic Stability Program (ESP) control unit (N30/4).

11

Bleed brake system.

AR42.10-S-0010E

 Brake lines, brake hoses

Number

Designation

Model 447, 448

BA42.10-N-1003-04D

Retaining screw, brake line to hydraulic unit

Nm

14

 Brake lines, brake hoses

Number

Designation

Model 447, 448

BA42.10-N-1005-04D

Bolt, hydraulic unit to bracket

Nm

8