ar2520b0100e

Remove/install master cylinder

Type ar · topic 25.20 · version 0100 · 2016-02-12

Applies to: Vehicle 693 with Cumbustion engine 457.920, 457.928

Where it sits

Function group 2 Chassis › 25 Clutch › 25.20 Clutch actuation — Series 693

EinPAS 17 Drivetrain/axle › 17.15 Clutch › 17.15.5 Clutch operation — Series 693

Also applies to engines/gearboxes: 457 920, 457 928

AR25.20-B-0100E

Remove/install master cylinder

12.02.16

Vehicle 693 with Cumbustion engine 457.920, 457.928

Remove/install master cylinder

B25.20-0033-09

1 Hydraulic sender cylinder

2 Clutch actuation hydraulic reservoir

3 Bolt with flange

3.1 Flat washer

4 Tubes connection locking clip

5 Hydraulic tubes of the cylinder for the hydro-pneumatic auxiliary unit

6 Sender cylinder's fastening bolts with flange

7 Rod's articulation axle in the clutch pedal

8 Axle's snap ring

9 Actuation rod (provided with the sender cylinder)

Preliminary measures

1

Put the vehicle in a flat and leveled place, if possible with an appropriate ditch.

Choke the wheels to avoid accidental movements

2

Turn-off battery master switch or disconnect the battery negative lead.

In vehicles equipped with electronic engines, always observe the recommendations relative to the care with the electronic part of the vehicle.

Remove and install

3

Open the front cover

4

From the inner part of the cabin, to facilitate access to the pedals, remove the left side coating (driver's side), including the z folded protection, if necessary.

Remove and install the left coating of the foot well.

AR68.30-B-1310B

Install: During the coating assembly, if necessary, replace the plastic fastening bolts or any damaged coating.

Danger!

Safety instructions relative to the brake fluid

AS42.50-B-0001-01A

5

Remove by suction the brake fluid from the hydraulic reservoir (2)

Collect the fluid in an appropriate container and discard it in an environmentally friendly way.

Equipment for brakes, clutch and steering test and bleeding.

6

Remove the bolt (3), the washer (3.1) and remove the hydraulic fluid reservoir (2).

Install: Connect the hydraulic fluid reservoir (2) firstly in the sender cylinder (1), put the washer (3.1) and tighten the bolt (3) normally.

7

Remove the locking clip (4) and disconnect the hydraulic tubes (5).

Install: Use a new locking clip (4).

8

Remove the snap ring (8) and remove the articulation axle (7).

Install: Lubricate the articulation's axle and use a new snap ring (8).

*BR00.45-B-1002-06A

9

From inside the cabin, disconnect the electric connector of the clutch actuation switch.

Remove any other small support fastened to the rack.

Depending on the supplementary electronic equipment that may be installed in the vehicle, there may be supports fastened to the rack.

10

From the cabin interior, remove the two bolts (6) and remove the hydraulic sender cylinder (1) from outside

*BA25.20-B-1001-01B

11

Clean the components, check their condition and replace what you consider necessary.

12

Install in reverse order

13

After finishing the works, actuate the engine and pressurize the vehicle's pneumatic system until it reaches the normal pressure.

14

Supply the reservoir (2) with the specified hydraulic fluid.

Use the specified hydraulic fluid.

The removed hydraulic fluid must not be reused.

*BR00.45-B-1011-06A

15

Bleed the clutch actuation system.

AR25.20-B-0070B

16

Make a test drive to check the correct operation of the clutch.

Clutch operator

Número

Denominação

Vehicles 382; 384; 386; 397; 682; 688; 693; 694

BA25.20-B-1001-01B

Bolts which fasten the master cylinder to the rack

M6

Nm

9

Produtos para reparos

Número

Denominação

Número de pedido

BR00.45-B-1002-06A

Grease according to DBL 6811.00.20 - Class 266.2

-

BR00.45-B-1011-06A

Brake fluid as per DBL 7760.30 (DOT 4)

-

Referenced documents