Draining Coolant From Return Line; Draining Coolant From Expansion Tank; Adding Coolant; Adding Coolant To Feed And Return Lines And Engine - BMW C1 Repair Manual

Draining coolant from return line

– Remove left service cover.
....................................................See Group 46
a
1
3
2
5
•
Disconnect spark plug cap.
•
Remove holder (5) for ignition lead.
•
Detach holder (2) for seat-belt central release ca-
ble from moulded hose.
•
Remove moulded hose (4) for return from
holder (3).
•
Open hose clamps (1) with pliers,
BMW No. 17 5 500.
•
Disconnect moulded hose (4) from coolant pipe.
When installing:
•
Installation is the reverse of the removal proce-
dure.
•
Do not reinstall moulded hose (4) for return in
holder (3) until system has been refilled with
coolant.
4
C1170180

Draining coolant from expansion tank

– Removing and installing expansion tank
L
Note:
Remember to drain coolant from the vapour dis-
charge hose as well.

Adding coolant

Adding coolant to feed and return lines and
engine
•
If applicable, connect moulded hose for return to
coolant pipe.
L
Note:
Renew sealing ring on drain plug
•
Tighten the drain plug.
•
Pour the coolant into the filler bowl until bubble-
free coolant escapes from the vent screw in the
engine.
•
Tighten vent screw in engine.
•
Top up coolant until level reaches bottom (arrow)
of filler bowl.
X
Tightening torque:
Drain plug .................................................... 10 Nm
C1170150
17.15