1 | Cap |
W20.30-1046-11
Vehicles up to vehicle identification end number 247409 |
2 | Drain screw (radiator) |
W20.20-1166-11
Vehicles as of vehicle identification end number 247410 |
4 | Drain hose (radiator) |
W20.20-1204-11
3 | Drain screw (only for vehicles with an additional cooler) |
W20.20-1167-11
Only on models fitted with automatic transmission |
5 | Coolant hose |
W20.00-A011-11
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. | |
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. | |
Topical note | Notes on coolant | ||
Drain off | |||
1 | Unscrew cap (1). | ||
2 | Set heating to max. heating output and switch on ignition. | ||
3.1 | Open drain screw (2) and drain coolant at radiator. | Vehicles up to vehicle identification end number 247409 | |
3.2 | Remove drain hose (4) from fitting of radiator and drain coolant at radiator. | Vehicles as of vehicle identification end number 247410 | |
4 | Open drain screw (3) and drain coolant at side additional cooler. | Only on vehicles with additional cooler | |
Do not unscrew drain screw (3) completely when draining. | |||
5 | Release coolant hose (5) from the coolant pipe and drain coolant from the automatic transmission. | Only when replacing coolant for vehicles with automatic transmission | |
6.1 | Tighten drain screw (2). | Vehicles up to vehicle identification end number 247409 | |
Drain screw to engine radiator | |||
6.2 | Install drain hose (4). | Vehicles as of vehicle identification end number 247410 | |
7 | Tighten drain screw (3) on side additional cooler. | Only on vehicles with additional cooler | |
Drain screw to additional engine radiator cross member | |||
8 | Attach coolant hose (5) to coolant pipe. | Only when replacing coolant for vehicles with automatic transmission | |
| Check | ||
9 | Check drained coolant for contamination. | In case of heavy contamination, replace coolant overall. | |
Engine 936.9 (except 936.974) in model 956Coolant | |||
Engine 936.974 in model 956.264/265Coolant | |||
If coolant is severely contaminated | |||
| |||
De-oil engine cooling system. | |||
10 | Check coolant with antifreeze tester. | Engine 936.9 (except 936.974) in model 956Coolant | |
Engine 936.974 in model 956.264/265Coolant | |||
If antifreeze content is too low: | |||
| |||
Correct concentration of antifreeze or replace the coolant. | |||
Pour in | |||
11 | Pour in coolant up to lower edge of filler neck. | ||
12 | Start engine and bleed engine cooling system. | Allow engine to run and warm it up until the coolant thermostat opens (> 83 °C) and allow to run for several minutes at different engine speeds. While doing so, refill coolant continuously up to the bottom edge of the filler neck. | |
13 | Screw down cap (1). | ||
14 | Switch off engine. | ||
15 | Check engine cooling system for leak tightness. | Visual inspection. |
Engine cooling |
Number | Designation | Engine 936.9 in model 956 with transmission 715 without additional cooler | Engine 936.9 in model 956 with transmission 723 without additional cooler | ||
BF20.00-N-1001-01N | Coolant | Total filling capacity | Liter | 48,0 | 56,0 |
Anticorrosion and antifreeze agent down to -37 °C | Liter | 24,0 | 28,0 | ||
Anticorrosion and antifreeze agent down to -45 °C | Liter | 26,4 | 30,7 | ||
Sheet | |||||
Sheet | |||||
Engine cooling |
Number | Designation | Engine 936.9 in model 956 with transmission 715 with additional cooler | Engine 936.9 in model 956 with transmission 723 with additional cooler | ||
BF20.00-N-1001-01N | Coolant | Total filling capacity | Liter | 60,0 | 68,0 |
Anticorrosion and antifreeze agent down to -37 °C | Liter | 30,0 | 34,0 | ||
Anticorrosion and antifreeze agent down to -45 °C | Liter | 33,0 | 38,4 | ||
Sheet | |||||
Sheet | |||||
Engine cooling |
Number | Designation | Engine 936.974 in model 956.264/265 | ||
BF20.00-N-1001-01NA | Coolant | Total filling capacity | Liter | 56,0 |
Anticorrosion and antifreeze agent down to -37 °C | Liter | 28,0 | ||
Anticorrosion and antifreeze agent down to -45 °C | Liter | 30,7 | ||
Service filling | Detroit Fluids Specification 93K217 | |||
Factory filling | ||||
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