Filling Expansion Tank With Coolant; Checking Coolant Level; Checking Cooling System For Leaks - BMW C1 Repair Manual

3
•
If necessary, knead/squeeze moulded hose (4)
for return so that the air (arrow) in front of the
thermostat can rise and escape.
•
Secure moulded hose (4) for return in holder (3).
•
Install cap on filler bowl.

Filling expansion tank with coolant

•
Top up with coolant to the MAX mark (arrow).
•
Install the cap of the expansion tank.
17.16
4
C1170180
C1170120

Checking coolant level

•
Warm up the engine to operating temperature.
•
Check the coolant level in the filler bowl and top
up if necessary.
•
Check the coolant level in the expansion tank
and top up if necessary.
Operating fluids
Coolant
in coolant
circuit ............ 1.2 l (2.11 Imp. pints/1.27 US quarts)
in expansion
tank............... 0.2 l (0.35 Imp. pints/0.21 US quarts)
Composition
Use only long-life antifreeze and corrosion inhibitor
free from nitrides
Concentration
Antifreeze .........................................................50%
Water ...............................................................50%
Checking cooling system for
17 00 501
leaks
– Remove front fairing panel.
....................................................See Group 46
a
•
Remove the filler cap from the bowl.
17 5 520
17 5 525
17 0 500
•
Remove fasteners at filler bowl.
•
Secure pump, BMW No. 17 0 500, with adapter,
BMW No. 17 5 520, and spring clip,
BMW No. 17 5 525 to filler bowl.
•
Pressure-test the system; the pressure must re-
main unchanged for at least 5 minutes.
Setting:
Test pressure ................................ 1 bar (14.51 psi)
When installing:
•
Installation is the reverse of the removal proce-
dure.
C1170190