Remove/install coolant thermostat

AR20.10-T-2460BB

Remove/install coolant thermostat

15.2.12

 

Remove/Install

 Danger!

Risk of explosion caused by escaping oxyhydrogen gas. Risk of injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries caused by short circuit. Risk of poisoning caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices

No fire, sparks, open flames or smoking.

Wear acid-resistant gloves and clothing and safety glasses with side guards.

Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground.

Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

1

Disconnect electric cables at battery

Type 671.015/020/021/030/042/332/333

AR54.18-T-0002AA

Type 613.358/388

AR54.18-T-0002BA



Notes on battery

All models

AH54.10-P-0001-01A

2

Open rear lid

3.1

Fold down bumper cover

Only in model 671.015/020/021/030/042/

332/333

4

Close the shutoff valves of the cooling system

 See Operating Instructions

 Danger!

Risk of injury to skin and eyes suffering scalding from contact with hot coolant spray. 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 bottles.

Wear protective gloves, protective clothing and eye protection.

AS20.00-Z-0001-01A

5

Drain coolant

 Installation: Pour in coolant.



*BF20.00-N-1001-01D



Notes on coolant

All engines

AH20.00-N-2080-01A

6

Slacken hose clamps (2) and remove coolant hose (1)

 Installation: Check hose clamps (2) and the coolant hose (1) for damage; replace if necessary.

7.1

Detach the electrical connector (9) from the oil filter housing (8)

Only in model 671.015/020/021/030/042/

332/333

8.1

Unscrew bolts (10) of the oil filter housing (8)

Only in model 671.015/020/021/030/042/

332/333

 In this way, it easier to reach the coolant outlet nipple (3).

9

Unscrew bolts (4) and detach the coolant outlet nipple (3)

 In case of engine 457.944, also remove the start/stop switch (7).



*BA20.10-N-1001-01K



*000589672100

10

Detach the coolant temperature control switch (5) along with the sealing rings (6)

 Installation: Replace sealing rings (6) and grease them.

The arrows on the coolant temperature control switch (5) must point upwards.

*BR00.45-Z-1014-06A

11

Install in the reverse order



Check

12

Inspect the condition of hose clamps and the coolant outlet nipple (3), and check them for leaks

Number

Designation

Engine 457.9

BA20.10-N-1001-01K

Bolt, coolant outlet connection with
coolant thermostat to coolant pump

Nm

25

Number

Designation

Engine 402.970, 441.980, 446.938, 457.944

Engine
457.942

BF20.00-N-1001-01D

Coolant capacity

without VOITH retarder

Liters

75...100

76...92

with VOITH retarder

Liters

95...120

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Specifications for Operating Fluids

Sheet

BB00.40-P-0310-01A

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-02A

BB00.40-P-0325-02A

Number

Designation

Order number

BR00.45-Z-1014-06A

ATE grease

-