17 00 009 Checking cooling system for leaks (N12, N14)
WARNING: This page is about a different variant/trim than selected.
Special tools required:
- 17 0 101
- 17 0 102
- 17 0 109
- 17 0 115
(refer to 17 0 100 TESTER )
WARNING:
Risk of burning and scalding!
Only perform this work after engine has cooled down.
Only perform this work after engine has cooled down.
IMPORTANT:
Open cooling system only when it has cooled down.
Opening the cooling system while hot can result in air entering the system.
This can cause overheating with permanent damage to the engine!
Opening the cooling system while hot can result in air entering the system.
This can cause overheating with permanent damage to the engine!
Necessary preliminary tasks:
Follow INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .
Checking pressure drop in cooling system:
Unscrew cap from filler neck.
Connect special tool 17 0 109 to filler neck.
Connect special tools 17 0 102 and 17 0 101.
Build up gauge pressure and wait approx. 2 minutes, see TECHNICAL DATA
Cooling system is tight if pressure drop does not exceed 0.1 bar.
Checking pressure relief valve in cap:
Connect special tool 17 0 115 to cap (1).
Connect special tools 17 0 101 and 17 0 102.
Pressurize cap.
Compare opening pressure of pressure relief valve, see TECHNICAL DATA