Internal Leakage Test, Front Axle Circuit - Section 34

Preparation for Test


NOTE:
- Test only if rear axle vehicle level drops or does not raise.
- Test with vehicle weight on all 4 wheels.
- Test with vehicle at normal level.


1. Switch on level control lock-out switch (S77/1s1) (switch should illuminate).
2. Check oil level in oil reservoir (2), correct if necessary.
3. Disconnect overflow oil return line (LL/LR) for suspension strut (11) at connector (arrow).
4. Connect coupling (038f) and bleeder screw (038n) to steel hydraulic line.
5. Disconnect return line (T) at oil reservoir (2), connect a suitable hose (061) and hold it in a measuring container.

Special Tools:

Figure 1:

Step 1.0: