Testing - WACKER Group PG 2 Repair Manual

Disassembly/Assembly Procedures

5.13 Testing

See Graphic: wc_gr003501
5.13.1 Fill the pump housing with cold water until it flows out from the
5.13.2 Tighten the pump cover and the prime plug.
5.13.3 Bring the engine up to operating speed. Check the engine rpm with the
5.13.4 Grease the mounting face of the vacuum gauge (1) to ensure a good
5.13.5 The gauge reading should slowly climb and then hold steady.
wc_tx000608gb.fm
This procedure requires a vacuum gauge (P/N 28755) and a
tachometer.
discharge port.
tachometer. See chapter Technical Data for engine speeds.
Note: Keep the pump housing filled with water at all times while the
pump is running. If too much water is lost during the test procedure,
stop the engine and prime the pump. It may be necessary to tilt the
pump or partially cover the discharge port, to prevent the water in the
pump housing from being lost while still allowing air to be vented.
seal. Press the gauge over the inlet port.
With the gauge still against the inlet port, turn off the engine. The
gauge reading should not change.
Note: See the vacuum chart for appropriate gauge readings.
This test MUST be completed within a few minutes of starting the
pump to prevent the water in the pump housing from getting hot, which
will result in lower readings. If possible, allow cold water to run into the
discharge port while testing the pump.
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PG Repair