17 00 005 Draining and adding coolant
| WARNING | Work on the cooling system may only be carried out on the engine after it has cooled down. |
Recycling
Catch and dispose of drained coolant.
Comply with the waste disposal regulations applicable in the relevant countries.
Note. Follow instructions for working on cooling system. Refer to «17 00... FOLLOW INSTRUCTIONS FOR WORKING ON COOLING SYSTEM».
After adding coolant, vent cooling system and check for leaks.
Refer to appropriate article about venting cooling system and checking for leaks.
Draining Coolant
Unscrew pressure relief cap (1) from filler neck.
Scheme 1
Remove underbody protection. Refer to 51 47 490 REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION (ENGINE) .
Disconnect lower hose connection on radiator (1).
Drain, catch and dispose of coolant.
Scheme 2
Release connection of heater hose (1).
Drain, catch and dispose of coolant.
Scheme 3
Release vent screw (1) in heating distributor pipe.
Scheme 4
Release vent screw (1) in upper radiator hose.
The cooling system is vented during filling.
Scheme 5
Adding Coolant
Pour in coolant at filler neck (1).
Tighten down vent screws as soon as coolant emerges.
Tightening torque, refer to 17 00 1AZ in COOLING SYSTEM - TIGHTENING TORQUES - COOPER .
Pour in coolant at filler neck until level reaches lower sealing surface (no bubbles visible).
Scheme 6
Fill expansion tank up to maximum level (1).
Scheme 7
Start engine and run at idle; top up coolant at filler neck if level drops.
Continue running engine until liquid level stops dropping.
Switch off engine.
Top up coolant at filler neck to lower sealing surface.
Top up expansion tank to maximum level (if necessary).
Note. Before filling, turn on ignition and set heating control to maximum temperature. Set fan to slow setting. Add coolant slowly.
Use only approved coolant.
17 21 500 Flushing oil cooler with lines (automatic transmission)
Note. For Special Tool identification, see COOLING SYSTEM - SPECIAL TOOLS - COOPER .
Special Tools Required
- 17 2 018
- 17 2 019
Note. Carry out the work steps listed when: Fitting a new or replacement transmission. Flushing can only be carried out with the automatic transmission removed.
Procedure
Automatic transmission removed.
Connect appropriate adapters (see description below) to oil lines exiting from automatic transmission.
Connect the connecting line 17 2 019 from the oil collection unit with the quick-release coupling.
Connect drain line 17 2 018 using quick-release coupling.
Feed open end of drain line into a suitable collection container.
Using oil collection unit, flush approx. 1 liter of transmission fluid through oil lines and oil cooler.
Reposition quick-release couplings.
Flush oil lines/oil cooler in opposite direction with approx. 1 liter of transmission fluid.
Disconnect quick-release couplings, remove adapters.
Note. Dispose of flushing oil properly; do not under any circumstances reuse it.
Arrangement of flushing device for transmissions A5S 310Z, A5S 560Z, A5S 360R/390R, A4S 200R, A5S 325Z, GA6HP26Z
Scheme 8
Arrangement of flushing device for transmission A4S 310R
Scheme 9
Arrangement of flushing device for transmission A4S 300J
Scheme 10
Arrangement of flushing device for transmission A5S 440Z
Scheme 11
Operation is identical to «17 21 500 FLUSHING OIL COOLER WITH LINES (AUTOMATIC TRANSMISSION)».