AR20.10-T-2460BB | Remove/install coolant thermostat | 15.2.12 |
ENGINE 457.944 in MODEL NMB613.358 /388
ENGINE 457.942 in MODEL NMB671.015 /020 /021 /030 /042 /332 /333
T20.10-0020-06
Shown on engine 457.944
1 Coolant hose
2 Hose clamp
3 Coolant outlet connection
4 Screw
5 Coolant temperature control switch
6 Sealing ring
7 Start/stop switch
T20.10-0031-12
Shown on ENGINE 457.942
8 Oil filter housing
9 Electrical connector
10 Screw
| 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. | |
1 | Disconnect electric cables at battery | Type 671.015/020/021/030/042/332/333 | |
Type 613.358/388 | |||
| Notes on battery | All models | |
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. | |
5 | Drain coolant | Installation: Pour in coolant. | |
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| Notes on coolant | All engines | |
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). | |
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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. | |
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 |
Coolant pump, coolant thermostat
Number | Designation | Engine 457.9 | |
BA20.10-N-1001-01K | Bolt, coolant outlet connection with | Nm | 25 |
Engine cooling system
Number | Designation | Engine 402.970, 441.980, 446.938, 457.944 | Engine | ||
BF20.00-N-1001-01D | Coolant capacity | without VOITH retarder | Liters | 75...100 | 76...92 |
with VOITH retarder | Liters | 95...120 | - | ||
Specifications for Operating Fluids | Sheet | ||||
Sheet | |||||
Torque wrench
000 589 67 21 00
Repair materials
Number | Designation | Order number |
BR00.45-Z-1014-06A | ATE grease | - |