ar2020w7450a

Remove/install coolant pipe

Typ ar · téma 20.20 · verze 0202 · 2010-10-21

Platí pro: ENGINES 902.9, 906.9, 926.9 in MODEL 957 coolant return from radiator

Není k dispozici v jazyce „cs“; zobrazeno v jazyce Angličtina.

Zařazení

Funkční skupina 1 Motor › 20 Chlazení motoru › 20.20 Chladič, hadice chlazení — Řada 902 (modely 9**) · Řada 906 (modely 9**) · Řada 957

EinPAS 15 Motor › 15.25 Chladicí systém motoru › 15.25.13 Potrubí/hadice/ventil — Řada 902 (modely 9**) · Řada 906 (modely 9**) · Řada 957

Platí také pro motory/převodovky: 926 9**

AR20.20-W-7450A

Remove/install coolant pipe

12.10.10

ENGINES 902.9, 906.9, 926.9 in MODEL 957
coolant return from radiator

Remove/install coolant pipe

W20.20-1054-09

1 Coolant hose

2 Refrigerant compressor (only for vehicles with code (H03) Air conditioning in front end)

3 Poly-V belt

4 Coolant hose

5 Coolant pipe (return)

6 Coolant hose

A6 Engine control (MR) control unit (vehicles without code (MS8) Natural gas engine)

A85 Gaseous fuel engine MR control unit (vehicles with code (MS8) Natural gas engine)

7 Coolant pipe

8 Clip

9 Bolts

10 Clip

11 Electrical connector

12 Electrical connector

13 Electrical connector

14 Electrical connector

Modification notes

13.1.08

Disconnect electrical connectors from engine control (MR) control unit or gaseous fuel engine MR control unit, added.

Step 8

Disconnect the electrical connector for the oil level sensor, added.

Step 10

Remove/install

Danger!

Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by 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

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

1

Switch off ignition

2

Open maintenance flap

Danger!

Risk of injury caused by body parts being pinched or crushed as cab is tilted

Ensure that no one is within tilting range of cab as it is being tilted. Always tilt the cab all the way to the end position and secure with the safety strut.

AS60.80-Z-0001-01A

3

Tilt cab

Notes on tilting the cab

AH60.80-N-0003-01A

4

Drain coolant

Engine 902.9 with code (MS8) Natural gas engine,

Engine 906.9

AR20.00-W-1142C

Engine 902.9, without code (MS8) Natural gas engine

Engine 926.9

AR20.00-W-1142J

5

Remove LH soundproofing from top of frame and from bottom of frame

6

Release tension on poly-V belt (3) and remove belt pulley from refrigerant compressor (2)

Only on vehicles with code (H03) Air conditioning at front end.

Installation: Inspect condition of poly-V belt (3), replace if necessary.

Observe poly-V-belt routing plan.

AR13.22-W-3902-02D

Damage profiles for a poly-V belt

AP13.22-D-1351-01A

7

Disconnect connector from refrigerant compressor (2), remove refrigerant compressor (2) and move it forward with the refrigerant lines attached

Only on vehicles with code (H03) Air conditioning in front end.

*BA83.55-N-1001-01C

8

Disconnect electrical connectors (12, 13) from engine control (MR) control unit (A6) or gaseous fuel engine MR control unit (A85)

Tie up the electrical wiring harnesses on one side.

9

Disconnect electrical connector (14)

10

Disconnect electrical connector (11) for the oil level sensor

11

Remove clamps (8, 10) from holders

12

Remove coolant hoses (1, 4) from coolant pipe (5)

13

Detach coolant hose (6) and push back onto coolant pipe (7)

14

Remove coolant pipe (5)

To remove coolant pipe (5), turn counterclockwise.

15

Install in the reverse order

Refrigerant compressor

Number

Designation

Model
374.5, 375.1, 375.3, 949, 950.5, 950.6, 952.5, 952.6, 953.6, 954.5, 957, 958.0, 958.2, 970, 972, 974, 975, 976

BA83.55-N-1001-01C

Bolt, refrigerant compressor/bracket

Nm

25

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