Hydraulic Test - Preparation For Testing

The following are the same for all test steps:

1. Connection of test equipment to hydraulic unit. See Figure . Torque check valve (part No. 129 589 08 63 00) to 44 INCH lbs. (5 Nm). See Figure and Figure under SPECIAL TOOL.
2. Build up and release test pressure (see examples below).
3. Test hydraulic cylinder only at end position of piston (observe soft top positions).
4. If hydraulic lines need to be disconnected from the valve blocks during pressure tests, the appropriate soft top position (end position of the hydraulic cylinder) must first be ensured.

Disconnected hydraulic lines should be held in a container (connect a transparent hose such as windshield washer hose). Hydraulic components that leak should be replaced. During pressure tests, the valve block connections must be plugged with plug (part No. 129 589 00 91 01). If hydraulic components need to be replaced, the disconnected hydraulic lines must be plugged with plug (part No. 129 589 00 91 07), while the connections of valve blocks, hydraulic cylinders and hydraulic manifolds must be plugged immediately using plug (part No. 129 589 00 91 11) to prevent the possible entry of dirt.