Checking Working Pressures - Kärcher ICC 1 S D Service Manual

ICC 1 S D
Hydraulic System – Checking working pressures
1 Connecting union on testing setup
2 T-joint
3 Connecting union on bypass line
4 Bypass line
5 Connecting union on bypass valve
6 Bypass valve
7 Testing set (special tool)
8 Hydraulic drive pump
Note:
A pressure reading below 100 bar indicates
a defective drive pump or drive motor.
Basic Settings and Service Procedures
Checking drive hydraulic pressure
– Secure unit by setting parking brake.
– Unscrew connecting union (3) from T-joint
(2).
– Loosen connecting union (5) from bypass
valve (6). Swivel bypass line (4) sideways.
– Close bypass line (4) with blind plug to
prevent admission of contaminants.
– Screw connecting union (1) of testing set (7)
onto T-joint (2), and tighten.
– Start engine, and run at full throttle.
– Fully depress "Forward" drive pedal.
– With all hydraulic components working
properly, a pressure of 150 to 180 bar must
be indicated on testing gauge.
– After conclusion of pressure test, remove
testing set, and return all hydraulic connec-
tors to their previous positions. Ensure that
connections are tight.
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