1 Series E81 130i (N52K) 3-door
17 00 009
Checking cooling system for water leaks
Special tools required:
•
17 0 101
•
17 0 113
•
17 0 114
Warning!
Danger of scalding!
Only perform this work after engine has cooled down.
Checking pressure drop in cooling system:
Open cap on coolant expansion tank. Fit special tools 17 0 101
/
17 0 113 .
Build up gauge pressure, wait approx. 2 minutes.
Cooling system is impervious to leaks if pressure drop is max.
0.1 bar.
Checking pressure relief valve in cap:
Note:
While the vehicle is driven at high outside temperatures, the
design may cause the pressure relief valve in the cap to open
slightly and air together with dissolved coolant to escape. This
coolant vapour condenses on the surface of the expansion tank
and leaves traces when the vehicle has cooled down. These
traces do not indicate whether the cap is defective or not. When
the vehicle has been parked up for an extended period of time, the
residual escaping coolant can cause the pressure relief valve in
the cap to stick; therefore check the cap again 2 to 3 times.
RA Checking cooling system for water leaks
BMW AG - TIS
22.01.2013 04:01
Issue status (12/2007) Valid only until next DVD is issued
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