Remove/install retarder

AR43.30-W-0002WR

Remove/install retarder

04.12.2019

Model

963

with code B3H (Water-type secondary retarder)

1

Retarder

6

Drain screw

10

Propeller shaft

2

Sealing ring

7

Coolant pipe (return)

11

Transmission

3

Eyelet

8

Coolant hose (return)

12

Screw

4

Gear

9

Coolant connection (return line)

A11

Retarder control (RCM) control unit

5

Drain plugs (with magnet)

7

Coolant pipe (return)

11

Transmission

12

Screw

13

Coolant pipe (feed)

14

Clip

15

Bracket

1

Retarder

18

Coolant hose (feed line)

11

Transmission

19

Coolant connection (feed line)

12

Screw

20

Compressed-air line

16

Locking pressure line (return line)

21

Electrical connector

17

Cable tie

A11

Retarder control (RCM) control unit

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Danger

Risk of death to implant wearers from working on retarder

As a safe distance from the retarder, a minimum distance of 100 cm is to be maintained between the retarder and the body parts of the affected person for people with implants.

AS43.30-Z-0002-01A

 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

Topical note

Notes on influence of retarder on coolant/coolant sludging

AH43.30-N-0003-01WR

Topical note

Notes on coolant

AH20.00-N-2080-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-N-5000-01H

Notes on compressed air connection systems

AH00.18-N-0001-01A

 

Remove/install

1

Use the right multifunction lever (S23) to set the retarder control to the "0" position.

2

Remove noise encapsulation.

3

Drain coolant at drain screws (5, 6).



Connection fitting for coolant return line on retarder modified

BT43.30-W-0009-01WR

Engine 470.9, 471.9, 473.9

AR20.00-W-1142H

Engine 936.9

AR20.00-W-1142M


Remove chips stuck to drain screws (5).
The cooling system can get damaged otherwise.

4

Partially drain transmission oil from transmission (11).



Transmission 715.310/352/360/371/381/523

AP26.00-W-2601H

5

Check position of propeller shaft flange (10) relative to retarder (1).

If the flattened side of the propeller shaft flange does not face toward the retarder (1),



turn the propeller shaft (10).

6

Remove cable ties (17) of locking pressure line (16) from transmission (11).

7

Remove locking pressure line (16) from retarder (1) and check sealing ring in quick-release fastener of locking pressure line (16) for damage.

 Collect escaping coolant using suitable vessel.

 Installation: Coat sealing ring with lubricant.
The safety clip must latch into place on the locking pressure line (16).

Lubricant, rubber assembly 1 l

*BR00.45-Z-1010-06A

If the sealing ring in the quick-release fastener of the locking pressure line (16) is damaged,



replace locking pressure line (16).

AR43.30-W-0062WS

8

Remove cable ties of electric line from retarder (1).

9

Release and disconnect electrical connector (21) from retarder control unit (RCM) (A11).

10

Disconnect connector coupling of compressed-air line (20) from retarder control unit (RCM) (A11) and place compressed-air line (20) to one side.

AR42.10-W-0900H

 Vent compressed air at connector coupling of compressed-air line (20).

 Installation: Only the compressed air connection system VOSS "232" may be used on the retarder control unit (RCM) (A11).

11

Remove clamps (14) of coolant pipes (7, 13) from holder (15).

 Bolt, clamp for retarder coolant pipe to bracket

*BA43.30-N-1016-01F

12

Remove holder (15) from transmission (11).

13.1

Screw an eyelet (3) with a thread M10 at top into retarder (1) and secure with a shackle.

When removing retarder (1) upwards.

13.2

Support and secure retarder (1) from below.

When removing retarder (1) downwards.

14

Remove clamps on retarder from coolant hoses (8, 18).

Engine 470.9, 471.9, 473.9, 936.9

AR20.20-W-7470-01H

 Pliers

*470589013700

15

Remove screws (12) from retarder (1).

 Collect escaping coolant and transmission oil and dispose of in environmentally-compatible manner.

 Bolt, retarder to transmission

*BA43.30-N-1001-01F

16

Detach retarder (1) from transmission (11) and lift out.

 While doing so, the coolant hoses (8, 18) are detached from the coolant connections (9, 19).

 Installation: When placing the retarder (1), turn the gear (4) if necessary.

17

Remove sealing ring (2).

 Installation: Coat new sealing ring (2) with transmission oil and install free of twists.

18

Replace retarder (1).

Only if a new retarder (1) is installed.



Anticorrosion agent/antifreeze (specification 325.5)

BB00.40-P-0325-05A

AR43.30-W-0022WR

 A new retarder (1) must be filled with approx. 1   l of coolant before installation.

19

Install in the reverse order

 Retarder

Number

Designation

MODEL 963, 964 with CODE B3H (Secondary water retarder)

BA43.30-N-1001-01F

Bolt, retarder to transmission

Nm

170

 Retarder

Number

Designation

MODEL 963, 964 with CODE B3H (Secondary water retarder)

BA43.30-N-1016-01F

Bolt, clamp for retarder coolant pipe to bracket

Nm

25

Repair materials

Number

Designation

Order number

BR00.45-Z-1010-06A

Lubricant, rubber assembly 1 l

A 000 989 03 67