Remove/install master cylinder

AR25.20-B-0100B

Remove/install master cylinder

04.08.2020

Model

693.028/396

Modification notes

07.01.2020

Set screws of master cylinder on the bracket

BA25.20-B-1012-01E

1

Hydraulic sender cylinder

7

Breather

2

Pedal bracket

8

Reservoir filter

3

Sender cylinder fastening screws

9

Filler cap sealing ring

4

Rod protective bellows

10

Reservoir end cover

5

Expander ring for connection to cylinder

11

Reservoir fastening clamp

6

Hydraulic reservoir

12

Flexible hydraulic hose

 

Remove/install

1

Turn off the master switch

2

Open the front cover

 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

3

Remove brake fluid from hydraulic reservoir (6) be means of suction

 Collect brake fluid in an appropriate container for ecologically correct disposal.
Use testing and bleeding equipment for brakes, clutch, and steering.

4

Remove hydraulic hose (12), disconnecting it first from lower metal tubing connection and then from sender cylinder connector

.

AR25.20-B-0140A

 First connect hydraulic hose (12) to sender cylinder and then to the metal tubing connection.

5

Remove clamp (11) and disconnect hydraulic reservoir (6) from expander ring (5) removing it from sender cylinder (1)

 Installation: Install a new expander ring and a new fastening clamp.

6

From inside the cab remove two screws (3), and remove hydraulic sender cylinder (1) from outside

 .Set screws of master cylinder on the bracket

*BA25.20-B-1012-01E

7

Remove protective bellows (4) from hydraulic sender cylinder

 Installation: Install new protective bellows.

8

Wash reservoir (6), filter (8), and filler cap with ethyl alcohol and dry with clean and dry compressed air

 Installation: Apply a new sealing ring to filler cap.

9

Replace sender cylinder repair kit

.

AR25.20-B-0100-01A

10

Refill with specified brake fluid and bleed the hydraulic clutch actuator system

.

AR25.20-B-0070B

Brake fluid, DB supply specification 7760.30 (DOT 4)

*BR00.45-Z-1110-06A

11

Adjust hydraulic sender cylinder actuator rod play

.

AR29.10-B-0090A

12

Check the hydraulic system for tightness

 Clutch drive

Number

Designation

Vehicles 368.0/1, 382.0/1, 384.0/2, 693, 694.0, 695.0/3 with gearbox 712.62, 715.054/062/064, 718.790

BA25.20-B-1012-01E

Set screws of master cylinder on the bracket

Nm

9

Repair materials

Number

Designation

Order number

BR00.45-Z-1110-06A

Brake fluid, DB supply specification 7760.30 (DOT 4)

Use corresponding commercially available repair materials.