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Proportional Valve Current
Voith Turbo I Aftersales Service Manual Voith Retarder VR 115 E I Diagnosis and Troubleshooting
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Proportional Valve Current
Requirements
•
Ignition switched off
•
Retarder switched off
•
Battery voltage 24–28 V
•
Electrical system of vehicle checked and in order
(see specifications of vehicle manufacturer)
•
Fuse for retarder controller tested and in order
•
Male and female plug connectors at proportional
valve checked for damage or wear (notch
scratches)
•
Electrical lead and plug connections checked
(visual inspection) and in order
Test scope
1. Disconnect the plug from the proportional valve
(3700) and connect it to the measuring adapter
(99/3).
2. Connect the plug of the measuring adapter to the
proportional valve (3700).
3. Connect the multimeter (98/8).
Measuring type: mA.
4. Turn the "Propventil" (prop valve) switch at the
measuring adapter to position "I".
5. Switch on ignition.
6. Shift the retarder to the highest gear.
Special tools
Measuring
adapter
99/3
When performing measurements using a
commercially available multimeter (without real
r.m.s. value measurement), exact readout of these
measured values is not possible (display jumps).
Commercially available tool
Multimeter (98/8) with real r.m.s. value
measurement, e.g. Fluke 179
H53.8198xx
NOTE
98/8
99/3
3700
28019
