450 589 20 63 00
Filling device
Pressure pump
450 589 07 21 00
P20.00-2342-04
Shown on model 451.3/4 with engine 660.9.
1 Attach universal adapter (2) for pressure pump with fine adjustment to expansion reservoir (1).
Shutoff cocks (3, 4) on filling unit (5) must be shut.
2 Connect universal adapter (2) to the filing device (5).
3 Connect Venturi nozzle (6) to the filing device (5).
4 Connect compressed air hose (7) to the Venturi nozzle (6).
5 Open shutoff lever (4) until the pointer on the filling device (5) is located in the green area (- 0.85 to - 0.9 bar). Then evacuate cooling system for just another 2 minutes or so.
6 Carefully open the shutoff lever (3) until the hose (8) at the filling device (5) is filled with coolant.
7 Close shutoff valves (3, 4), close venturi (6) and allow cooling system to rest for about 1 minute.
The vacuum should not drop in this time period. Reduced vacuum points to a leak in cooling system.
8 Open shutoff cock (3) and fill the cooling system up to top marking on coolant expansion reservoir (1).
9 Close shutoff lever (3).
10 Open shutoff lever (4) and create pressure compensation in the cooling system.
11 Disconnect universal adapter (2) on expansion reservoir (1) and on filling unit (5).