Remove/install retarder

AR43.30-B-0002B

Remove/install retarder

09.07.2020

Model

384.076/078 with transmission 712.632, 715.062

with code B30 (Voith retarder 123)

1

Retarder

7

Front torsion bar

2

Transmission

8

Oil temperature sensor connection

3

Propeller shaft

9

Pressure sensor connection

4

Retarder water inlet and outlet pipe

10

Proportional valve connection

5

Screws

11

Coolant temperature sensor connection

6

Proportional valve

A

Vehicle electronic system

 

Remove/install

1

Switch off vehicle ignition

 Make sure that the auxiliary brake activation (retarder) is in the "0" (zero) position.

 Carry out the work only when retarder (1) is off.
Wear protective clothing and goggles.

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

2

Lift the vehicle

 Lift the vehicle in an appropriate lift for the work of removing the retarder (1).

3

Shim the retarder (1) and transmission (2)

 As soon as the screws (5) are removed, both the retarder (1) and the transmission (2) will be loose and will not have lower support.
Shim them so that they do not come off the vehicle quickly and cause accidents.

4

Remove the front torsion bar (7) from the front axle, if necessary

.

AR32.35-B-2050XB

 Front axle stabilizer removal aims to obtain greater mobility for the removal of the retarder (1).

 Warning

Risk of injury caused by touching hot retarder and by scalding from hot retarderoil. Risk of injury to skin or eyes caused by retarder oil escaping under high pressure

Do not carry out any work unless retarder is switched off. Wear suitable protective clothing and safety glasses when working on the hot retarder.

AS43.30-Z-0001-01A

5

Drain the oil from the retarder



.

AP43.30-B-4301XA


Be careful when working with the hot retarder (1).
Contact with hot oil and under pressure can cause serious accidents, such as burns and eye injuries.

 Collect the oil in an appropriated recipient and dispose of it in Eco-friendly manner.

 Installation: Fill the retarder (1) with recommended oil.

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

6

Drain the retarder coolant (1)

.

AR20.00-B-1142XB


Be careful when handling the coolant.
Contact with hot and pressurized coolants may cause serious accidents.

 Installation: Fill the cooling system of the vehicle.

7

Drain the transmission oil (2)



.

AP26.00-B-2601I

 Partially drain the transmission oil (2).

 Installation: Fill up transmission (2) using recommended oil.

8

Remove the propeller shaft (3) between the retarder (1) and the intermediate propeller shaft mounting

AR41.10-B-0050A

9

Remove the retarder water inlet and outlet pipe (4)

10

Remove proportional valve connection (10)

11

Remove the oil temperature sensor connection (8), the pressure sensor connection (9) and the coolant temperature sensor connection (11)

12

Remove the screws (5)

 Fastening stud bolt nut

*BA43.30-B-1016-01F

 Fastening stud bolt

*BA43.30-B-1015-01F

13

Remove the retarder (1)

 The retarder (1) must be transported and stored as determined by the manufacturer. The propeller shaft (3) must not support the retarder (1) or the transmission box (2), it must be protected against damage.

14

Installation in reverse order

 Retarder (hydraulic)

Number

Designation

Chassis 368.0/1, 382.1/2, 384.0/2/3, 6852, 693.0/1, 694.0, 695.0/3 - with Voith Retarder R123

BA43.30-B-1015-01F

Fastening stud bolt

M16 x 1.5 x 70

Nm

25

 Retarder (hydraulic)

Number

Designation

Chassis 368.0/1, 382.1/2, 384.0/2/3, 6852, 693.0/1, 694.0, 695.0/3 - with Voith Retarder R123

BA43.30-B-1016-01F

Fastening stud bolt nut

M16 x 1.5

Nm

235