Remove/install expansion reservoir

AR20.30-S-4950E

Remove/install expansion reservoir

29.05.2020

Model

447 with engine 274, 622, 651

Model

448 with engine 274

Modification notes

28.05.2020

Work procedure revised.

The whole document

Shown with ENGINE 651

1

Coolant expansion reservoir

2

Return hose

3

Hose

4

Screw

5

Electrical connector

 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 avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

Notes on coolant level

AH20.00-P-1142-01CW

 

Remove/install

1

Remove cap at coolant expansion reservoir (1).

 Turn cap of coolant expansion reservoir (1) by half a turn counterclockwise, release overpressure, then remove cap.

 Installation: Only install cap after engine cooling system leak test.

2

Suction off coolant from coolant expansion reservoir (1).



Service Information: Coolant

Model 447 with engine 274, 622, 651

SI20.00-S-0001B

 Engine 622, 651Coolant

*BF20.00-N-1001-01A

 Engine 274Coolant

*BF20.00-N-1001-01K

 Hand pump

*210589007100

3

Remove return hose (2).

 To do this unfasten safety clip and detach return hose (2).

 Installation: Moisten sealing ring of return hose (2) with lubricant.

 Installation: Check sealing ring for damage.

Lubricant, rubber assembly 1 l

*BR00.45-Z-1010-06A

If damage is present,



Replace sealing ring.

4

Remove hose (3).

 Engine 274
To do this, unfasten clamp and remove hose (3).

 Engine 622, 651
To do this, unfasten safety clip and remove hose (3).

 Installation: Check clamp for damage.

If damage is present,



Replace clamp.

5

Disconnect electrical connector (5).

6

Remove coolant expansion reservoir (1).

 For this purpose, unscrew screws (4) and remove coolant expansion reservoir (1) upwards.

7

Install in the reverse order.

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

8

Purge engine cooling system.

AR20.00-S-1142-06E



Service Information: Coolant

Model 447 with engine 274, 622, 651

SI20.00-S-0001B



Check

9

Check engine cooling system for leak tightness.

AR20.00-S-1010E

 Engine cooling

Number

Designation

Engine 622.851
except code H12 (Auxiliary hot-water heater)

Engine 622.851
with code H12 (Auxiliary hot-water heater)

BF20.00-N-1001-01A

Coolant

Total filling capacity

Liter

10,0

13,0

Corrosion/antifreeze down to -37 °C

Liter

5,0

6,5

Corrosion/antifreeze down to -45 °C

Liter

5,5

7,25

Sheet

BB00.40-P-0310-01A

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-06A

BB00.40-P-0325-06A

Sheet

BB00.40-P-0326-06A

BB00.40-P-0326-06A

Sheet

-

-

 Engine cooling

Number

Designation

Engine 622.951
except code H12 (Auxiliary hot-water heater)

Engine 622.951
with code H12 (Auxiliary hot-water heater)

BF20.00-N-1001-01A

Coolant

Total filling capacity

Liter

10,7

13,7

Corrosion/antifreeze down to -37 °C

Liter

5,4

6,9

Corrosion/antifreeze down to -45 °C

Liter

5,9

7,5

Sheet

BB00.40-P-0310-01A

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A

BB00.40-P-0325-00A

Sheet

BB00.40-P-0325-06A

BB00.40-P-0325-06A

Sheet

BB00.40-P-0326-06A

BB00.40-P-0326-06A

 Engine cooling

Number

Designation

Engine 651.950
except code H12 (Auxiliary hot-water heater)

Engine 651.950
with code H12 (Auxiliary hot-water heater)

BF20.00-N-1001-01A

Coolant

Total filling capacity

Liter

10,4

13,4

Corrosion/antifreeze down to -37 °C

Liter

5,2

6,7

Corrosion/antifreeze down to -45 °C

Liter

5,7

7,4

Sheet

BB00.40-P-0310-01A

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A

BB00.40-P-0325-00A

Sheet

BB00.40-P-0325-06A

BB00.40-P-0325-06A

Sheet

BB00.40-P-0326-06A

BB00.40-P-0326-06A

 Engine cooling

Number

Designation

Engine 274 in model 447, 448

BF20.00-N-1001-01K

Coolant

Total filling capacity

Liter

10,4

Corrosion/antifreeze down to -37 °C

Liter

5,2

Corrosion/antifreeze down to -45 °C

Liter

5,7

Sheet

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A

Sheet

BB00.40-P-0325-06A

Sheet

BB00.40-P-0326-06A

Repair materials

Number

Designation

Order number

BR00.45-Z-1010-06A

Lubricant, rubber assembly 1 l

A 000 989 03 67